Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
027
FNUS55 KRIW 240843
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
243 AM MDT Sun Aug 24 2025
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
Moisture will increase across the area today and bring an increased
chance of showers and thunderstorms, mainly in Zones 416 and 414.
The greatest chance will be in southern Zone 414 where there is a
1 in 3 chance of a shower or thunderstorm this afternoon or evening.
Relative humidity will remain above critical levels. Wind should
remain light to moderate except in and around any shower or
thunderstorm. Mixing and smoke dispersal will be generally good to
excellent in the afternoon. The chance of wetting rain will increase
into the middle of the week.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
Today looks mainly dry across most of the dispatch area. Increasing
moisture may bring around a 1 in 5 to a 1 in 3 chance of a late day
or evening shower or thunderstorm to Zones 288, 283, 289 and southern
portions of Zone 286. Relative humidity will remain above critical
levels. Wind should remain light to moderate except in and around
any shower or thunderstorm. Mixing and smoke dispersal will be
generally good in the afternoon. Chances of showers and thunderstorms
will increase through the week, especially on Wednesday and Thursday.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
Increasing moisture will bring a increased chance of a shower or
thunderstorm to the southern zones today, with as high as a 1 in 2
chance in southern Zone 277. Chances drop to 1 in 6 across much of
Zones 280, 285 and 281. Relative humidity should remain above
critical levels. Wind should remain light to moderate except in
and around any shower or thunderstorm. Mixing and smoke dispersal
will be generally good to very good in the afternoon. Chances of
showers and thunderstorms will increase through the week,
especially on Wednesday and Thursday.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-251045-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
243 AM MDT Sun Aug 24 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....73-78.
24 hr trend......6 degrees cooler.
Min humidity........41-47 percent.
24 hr trend......15 percent wetter.
20-foot winds.......Northeast winds 10 to 15 mph. Gusts up to 15
mph until 1200, then 25 mph.
Ridge top winds.....Northeast around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East around 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4000-6000 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....49-54.
24 hr trend......4 degrees cooler.
Max humidity........81-87 percent.
24 hr trend......10 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......East winds 10 to 15 mph with gusts to around 25
mph until 0300, then downslope/downvalley 4-7
mph.
Ridge top winds.....East 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East 10 to 15 mph.
Mixing Height.......2400-4400 ft agl until 2400, then 400-1200 ft
agl.
Smoke dispersal.....Poor to fair.
.MONDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....75-80.
24 hr trend......2 degrees warmer.
Min humidity........31-37 percent.
24 hr trend......12 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northeast around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly cloudy. Lows in the lower 50s. East winds
around 10 mph.
.TUESDAY...Mostly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 50s. Highs in the lower 80s.
Southeast winds around 10 mph.
.WEDNESDAY...Cloudy with showers likely and chance of
thunderstorms. Lows in the mid 50s. Highs in the mid 70s. Winds
generally less than 10 mph.
.THURSDAY...Partly cloudy with showers likely and chance of
thunderstorms. Lows in the lower 50s. Highs in the mid 70s. Winds
generally less than 10 mph.
.FRIDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
.SATURDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ283-251045-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
243 AM MDT Sun Aug 24 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....75-80.
24 hr trend......5 degrees cooler.
Min humidity........35-41 percent.
24 hr trend......12 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then east
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....East 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4000-6000 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of showers and
thunderstorms in the evening. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....49-54.
24 hr trend......2 degrees cooler.
Max humidity........73-79 percent.
24 hr trend......14 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northeast 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 600-1200 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....75-80.
24 hr trend......Unchanged.
Min humidity........33-39 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then east
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northeast around 10 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northeast around 10 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then slight chance of
showers after midnight. Lows in the mid 50s. Northeast winds
around 10 mph.
.TUESDAY...Cloudy with chance of showers and slight chance of
thunderstorms. Lows in the mid 50s. Highs around 80. Winds
generally less than 10 mph.
.WEDNESDAY...Showers likely and chance of thunderstorms. Lows in
the lower 50s. Highs in the mid 70s. Winds generally less than
10 mph.
.THURSDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the mid 70s. Winds
generally less than 10 mph.
.FRIDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the lower 50s. Highs in the mid 70s.
.SATURDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ285-251045-
South Bighorn Mountains-
243 AM MDT Sun Aug 24 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....68-73.
24 hr trend......5 degrees cooler.
Min humidity........42-48 percent.
24 hr trend......12 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then east
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....East 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 1200, then west.
Mixing Height.......800-2800 ft agl until 1200, then 4000-6000 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....48-53.
24 hr trend......2 degrees cooler.
Max humidity........69-75 percent.
24 hr trend......1 percent drier.
Humidity recovery...Good.
20-foot winds.......East winds around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...10 percent.
Max temperature.....70-75.
24 hr trend......1 degree warmer.
Min humidity........31-37 percent.
24 hr trend......9 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northeast around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4600-6600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly cloudy. Lows in the lower 50s. East winds
around 10 mph.
.TUESDAY...Mostly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the mid 50s. Highs in the mid 70s.
Southeast winds around 10 mph.
.WEDNESDAY...Cloudy with showers likely and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the upper 60s.
North winds around 10 mph.
.THURSDAY...Partly cloudy with showers likely and slight chance
of thunderstorms. Lows in the lower 50s. Highs in the upper 60s.
Winds generally less than 10 mph.
.FRIDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the lower 50s. Highs in the upper 60s.
.SATURDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 70s.
$$
WYZ281-251045-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
243 AM MDT Sun Aug 24 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....69-74.
24 hr trend......3 degrees cooler.
Min humidity........41-47 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then east
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....East around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 5000-7000 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....49-54.
24 hr trend......4 degrees cooler.
Max humidity........68-74 percent.
24 hr trend......5 percent wetter.
Humidity recovery...Good.
20-foot winds.......Northeast winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northeast around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East around 10 mph until 2400, then north.
Mixing Height.......2600-4600 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......2 degrees warmer.
Min humidity........28-34 percent.
24 hr trend......11 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 5000-6800 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.MONDAY NIGHT...Partly cloudy. Lows in the lower 50s. Winds
generally less than 10 mph.
.TUESDAY...Mostly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the lower 80s.
Southeast winds around 10 mph.
.WEDNESDAY...Cloudy with chance of showers and slight chance of
thunderstorms. Lows in the upper 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the mid 50s. Highs in the upper
70s. Southeast winds around 10 mph.
.FRIDAY...Partly cloudy with chance of showers and thunderstorms.
Lows in the mid 50s. Highs in the upper 70s.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ282-251045-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
243 AM MDT Sun Aug 24 2025
.TODAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......1 degree cooler.
Min humidity........31-37 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....West around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 1200, then northwest.
Mixing Height.......1000-3000 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....48-53.
24 hr trend......4 degrees cooler.
Max humidity........65-71 percent.
24 hr trend......1 percent drier.
Humidity recovery...Good.
20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then
northeast around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northeast around 15 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 15 mph until 2400, then
northwest.
Mixing Height.......2400-4400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....73-78.
24 hr trend......1 degree warmer.
Min humidity........24-30 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....West around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4800-6800 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly cloudy. Lows in the mid 50s. Winds
generally less than 10 mph.
.TUESDAY...Mostly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 50s. Highs in the lower 80s.
Winds generally less than 10 mph.
.WEDNESDAY...Cloudy with showers likely and slight chance of
thunderstorms. Lows in the mid 50s. Highs in the mid 70s. Winds
generally less than 10 mph.
.THURSDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the mid 50s. Highs in the upper
70s. Winds generally less than 10 mph.
.FRIDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the mid 50s. Highs in the upper 70s.
.SATURDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 80s.
$$
WYZ275-251045-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
243 AM MDT Sun Aug 24 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....71-76.
24 hr trend......1 degree cooler.
Min humidity........30-36 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......800-2800 ft agl until 1200, then 4200-6200 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....48-53.
24 hr trend......4 degrees cooler.
Max humidity........63-69 percent.
24 hr trend......2 percent drier.
Humidity recovery...Good.
20-foot winds.......North winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......2400-4400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor to fair.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......2 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.MONDAY NIGHT...Partly cloudy. Lows in the mid 50s. Winds
generally less than 10 mph.
.TUESDAY...Mostly cloudy with slight chance of showers. Lows in
the upper 50s. Highs in the lower 80s. Winds generally less than
10 mph.
.WEDNESDAY...Cloudy with chance of showers and slight chance of
thunderstorms. Lows in the mid 50s. Highs in the upper 70s. Winds
generally less than 10 mph.
.THURSDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the mid 50s. Highs in the upper
70s. Winds generally less than 10 mph.
.FRIDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the mid 50s. Highs in the upper 70s.
.SATURDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 80s.
$$
WYZ276-251045-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
243 AM MDT Sun Aug 24 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......Unchanged.
Min humidity........31-37 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northeast around 10 mph with gusts to around 25
mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4000-6000 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....49-54.
24 hr trend......2 degrees cooler.
Max humidity........57-63 percent.
24 hr trend......5 percent drier.
Humidity recovery...Good.
20-foot winds.......North winds around 10 mph with gusts to around
25 mph until 2400, then downslope/downvalley
4-7 mph.
Ridge top winds.....North around 15 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Poor to fair.
.MONDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....73-78.
24 hr trend......1 degree warmer.
Min humidity........27-33 percent.
24 hr trend......7 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northeast around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest around 10 mph until 1200, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 4200-6200 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly cloudy with slight chance of showers. Lows
in the mid 50s. Winds generally less than 10 mph.
.TUESDAY...Cloudy with chance of showers and slight chance of
thunderstorms. Lows in the upper 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.WEDNESDAY...Cloudy with showers likely and slight chance of
thunderstorms. Lows in the mid 50s. Highs around 70. Winds
generally less than 10 mph.
.THURSDAY...Partly cloudy with showers likely and chance of
thunderstorms. Lows in the lower 50s. Highs in the mid 70s. Winds
generally less than 10 mph.
.FRIDAY...Partly cloudy with showers likely and chance of
thunderstorms. Lows in the lower 50s. Highs in the mid 70s.
.SATURDAY...Partly cloudy. Chance of showers and thunderstorms in
the afternoon. Highs in the mid 70s.
$$
WYZ287-251045-
Owl Creek Mountains-
243 AM MDT Sun Aug 24 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....70-75.
24 hr trend......3 degrees cooler.
Min humidity........35-41 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....East 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then
northeast.
Mixing Height.......800-2800 ft agl until 1200, then 3600-5600 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....50-55.
24 hr trend......1 degree cooler.
Max humidity........53-59 percent.
24 hr trend......3 percent drier.
Humidity recovery...Moderate.
20-foot winds.......North winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....North around 15 mph until 2400, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 2400, then 200-800 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Partly cloudy. Chance of showers early in the
afternoon. Slight chance of thunderstorms in
the afternoon. Slight chance of showers late in
the afternoon. Chance of precipitation 30
percent.
Chance of thunder...20 percent.
Max temperature.....70-75.
24 hr trend......Unchanged.
Min humidity........30-36 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....North around 10 mph until 1200, then northeast.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4600-6600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the mid 50s. Winds
generally less than 10 mph.
.TUESDAY...Cloudy with chance of showers and slight chance of
thunderstorms. Lows in the mid 50s. Highs in the mid 70s. Winds
generally less than 10 mph.
.WEDNESDAY...Cloudy with showers and chance of thunderstorms.
Lows in the lower 50s. Highs in the upper 60s. Winds generally
less than 10 mph.
.THURSDAY...Partly cloudy with showers likely and chance of
thunderstorms. Lows in the lower 50s. Highs in the lower 70s.
Winds generally less than 10 mph.
.FRIDAY...Partly cloudy with chance of showers and thunderstorms.
Lows in the lower 50s. Highs in the lower 70s.
.SATURDAY...Mostly sunny. Chance of showers and thunderstorms in
the afternoon. Highs in the lower 70s.
$$
WYZ286-251045-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
243 AM MDT Sun Aug 24 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......5 degrees cooler.
Min humidity........35-41 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then east
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then east.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then northwest.
Mixing Height.......1200-3200 ft agl until 1200, then 5000-7000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......2 degrees cooler.
Max humidity........67-73 percent.
24 hr trend......5 percent drier.
Humidity recovery...Good.
20-foot winds.......East winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....East around 15 mph until 2400, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 15 mph until 2400, then
southeast.
Mixing Height.......1800-3800 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....66-71.
24 hr trend......1 degree cooler.
Min humidity........34-40 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then east
around 10 mph with gusts to around 25 mph.
Ridge top winds.....East 10 to 15 mph.
Chc of wetting rain.Zero percent until 1200, then 15 percent.
Transport winds.....East 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then slight chance of
showers after midnight. Lows in the upper 40s. Winds generally
less than 10 mph.
.TUESDAY...Cloudy with showers likely and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the mid 60s. Winds
generally less than 10 mph.
.WEDNESDAY...Showers and chance of thunderstorms. Lows in the
upper 40s. Highs in the upper 50s. Winds generally less than
10 mph.
.THURSDAY...Partly cloudy. Showers and chance of thunderstorms.
Lows in the mid 40s. Highs in the lower 60s. West winds around
10 mph.
.FRIDAY...Partly cloudy with showers likely and chance of
thunderstorms. Lows in the mid 40s. Highs in the lower 60s.
.SATURDAY...Partly cloudy. Chance of showers and thunderstorms in
the afternoon. Highs in the mid 60s.
$$
WYZ140-251045-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
243 AM MDT Sun Aug 24 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....73-78.
24 hr trend......5 degrees cooler.
Min humidity........22-28 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph with higher gusts.
Ridge top winds.....East around 10 mph until 1200, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....East around 10 mph until 1200, then northwest.
Mixing Height.......1400-3400 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......2 degrees cooler.
Max humidity........74-80 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northeast around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 10 to 15 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.MONDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....73-78.
24 hr trend......Unchanged.
Min humidity........26-32 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....East around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....East around 10 mph until 1200, then northwest.
Mixing Height.......1400-3400 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then slight chance of showers after
midnight. Lows in the mid 40s. Winds generally less than 10 mph.
.TUESDAY...Cooler. Cloudy with showers likely and chance of
thunderstorms. Lows in the mid 40s. Highs in the mid 60s. Winds
generally less than 10 mph.
.WEDNESDAY...Showers and chance of thunderstorms. Lows in the mid
40s. Highs in the upper 50s. Winds generally less than 10 mph.
.THURSDAY...Mostly cloudy with showers and chance of
thunderstorms. Lows in the lower 40s. Highs in the lower 60s.
Winds generally less than 10 mph.
.FRIDAY...Partly cloudy with chance of showers and thunderstorms.
Lows around 40. Highs in the mid 60s.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 60s.
$$
WYZ415-251045-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
243 AM MDT Sun Aug 24 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....74-79.
24 hr trend......5 degrees cooler.
Min humidity........24-30 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southeast around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then northwest.
Mixing Height.......1600-3600 ft agl until 1200, then 8000-10000 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......2 degrees cooler.
Max humidity........73-79 percent.
24 hr trend......9 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then
east around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....North around 10 mph until 2400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 2400, then east.
Mixing Height.......3800-5800 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of thunderstorms early in the
afternoon. Chance of showers in the afternoon.
Chance of thunderstorms late in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....71-76.
24 hr trend......2 degrees cooler.
Min humidity........41-47 percent.
24 hr trend......12 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 10 mph.
Ridge top winds.....Southeast around 10 mph until 1200, then
southwest.
Chc of wetting rain.Zero percent until 1200, then 30 percent.
Transport winds.....Southeast around 10 mph until 1200, then west.
Mixing Height.......1400-3400 ft agl until 1200, then 4800-6800 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.MONDAY NIGHT...Cloudy. Chance of showers and slight chance of
thunderstorms in the evening, then chance of showers after
midnight. Lows in the upper 40s. Winds generally less than
10 mph.
.TUESDAY...Showers and chance of thunderstorms. Lows in the upper
40s. Highs in the mid 60s. Winds generally less than 10 mph.
.WEDNESDAY...Showers and chance of thunderstorms. Lows in the mid
40s. Highs in the upper 50s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy. Showers likely and chance of
thunderstorms. Lows in the lower 40s. Highs in the lower 60s.
Winds generally less than 10 mph.
.FRIDAY...Partly cloudy with chance of showers and thunderstorms.
Lows in the lower 40s. Highs in the mid 60s.
.SATURDAY...Partly cloudy. Chance of showers and thunderstorms in
the afternoon. Highs in the mid 60s.
$$
WYZ416-251045-
West Wind River Mountains/East Zone Bridger Teton NF-
243 AM MDT Sun Aug 24 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers early
in the afternoon. Slight chance of
thunderstorms in the afternoon. Chance of
showers late in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....68-73.
24 hr trend......5 degrees cooler.
Min humidity........31-37 percent.
24 hr trend......12 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening. Slight
chance of showers after midnight. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....43-48.
24 hr trend......2 degrees cooler.
Max humidity........75-81 percent.
24 hr trend......11 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then
northeast around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northeast around 10 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northeast around 10 mph.
Mixing Height.......2400-4400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor to fair.
.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of showers in the morning. Slight
chance of thunderstorms late in the morning,
then showers likely and chance of thunderstorms
in the afternoon. Chance of precipitation 70
percent.
Chance of thunder...50 percent.
Max temperature.....64-69.
24 hr trend......4 degrees cooler.
Min humidity........50-56 percent.
24 hr trend......15 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southeast around 10 mph.
Chc of wetting rain.Zero percent until 1200, then 60 percent.
Transport winds.....Southwest around 10 mph until 1200, then west.
Mixing Height.......1400-3400 ft agl until 1200, then 3400-5400 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.MONDAY NIGHT...Cloudy with chance of showers and slight chance
of thunderstorms. Lows in the mid 40s. Winds generally less than
10 mph.
.TUESDAY...Showers and chance of thunderstorms. Lows in the mid
40s. Highs in the lower 60s. Winds generally less than 10 mph.
.WEDNESDAY...Showers and chance of thunderstorms. Lows in the
lower 40s. Highs in the upper 50s. Winds generally less than
10 mph.
.THURSDAY...Partly cloudy with showers likely and chance of
thunderstorms. Lows in the lower 40s. Highs around 60. Winds
generally less than 10 mph.
.FRIDAY...Partly cloudy with chance of showers and thunderstorms.
Lows around 40. Highs in the lower 60s.
.SATURDAY...Partly cloudy. Chance of showers and thunderstorms in
the afternoon. Highs in the lower 60s.
$$
WYZ288-251045-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
243 AM MDT Sun Aug 24 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers early
in the afternoon. Slight chance of
thunderstorms in the afternoon. Chance of
showers late in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....67-72.
24 hr trend......5 degrees cooler.
Min humidity........35-41 percent.
24 hr trend......15 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then east
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 5000-7000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of thunderstorms
in the evening. Chance of showers until early
morning. Slight chance of showers early in the
morning. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....45-50.
24 hr trend......1 degree cooler.
Max humidity........77-83 percent.
24 hr trend......5 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....Northeast around 15 mph until 2400, then
northwest.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....Northeast 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of showers in the morning, then
showers likely and chance of thunderstorms in
the afternoon. Chance of precipitation 70
percent.
Chance of thunder...40 percent.
Max temperature.....63-68.
24 hr trend......4 degrees cooler.
Min humidity........51-57 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then east
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Zero percent until 1200, then 50 percent.
Transport winds.....Northeast 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 3000-5000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.MONDAY NIGHT...Cloudy. Chance of showers and slight chance of
thunderstorms in the evening, then chance of showers after
midnight. Lows in the upper 40s. Winds generally less than
10 mph.
.TUESDAY...Showers likely and slight chance of thunderstorms.
Lows around 50. Highs in the mid 60s. Winds generally less than
10 mph.
.WEDNESDAY...Showers and chance of thunderstorms. Lows in the
upper 40s. Highs around 60. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with showers likely and chance of
thunderstorms. Lows in the mid 40s. Highs in the lower 60s. West
winds around 10 mph.
.FRIDAY...Partly cloudy with chance of showers and thunderstorms.
Lows in the mid 40s. Highs in the lower 60s.
.SATURDAY...Partly cloudy. Chance of showers and thunderstorms in
the afternoon. Highs in the mid 60s.
$$
WYZ414-251045-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
243 AM MDT Sun Aug 24 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Patchy smoke through the day. Slight chance of
showers early in the afternoon. Slight chance
of thunderstorms in the afternoon. Chance of
showers late in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....73-78.
24 hr trend......6 degrees cooler.
Min humidity........30-36 percent.
24 hr trend......14 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South around 10 mph until 1200, then west.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South around 10 mph until 1200, then west.
Mixing Height.......2000-4000 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Patchy smoke through the night.
Slight chance of thunderstorms in the evening.
Chance of showers through the night. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....43-48.
24 hr trend......3 degrees cooler.
Max humidity........74-80 percent.
24 hr trend......20 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northwest around 10 mph until 2400, then
southeast.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 2400, then southeast.
Mixing Height.......2400-4400 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Patchy smoke early in the morning. Chance of
showers in the morning. Showers likely and
chance of thunderstorms in the afternoon.
Chance of precipitation 70 percent.
Chance of thunder...50 percent.
Max temperature.....71-76.
24 hr trend......2 degrees cooler.
Min humidity........43-49 percent.
24 hr trend......15 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....Southeast around 10 mph.
Chc of wetting rain.Zero percent until 1200, then 65 percent.
Transport winds.....South around 10 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 3600-5600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.MONDAY NIGHT...Cloudy. Showers likely and chance of
thunderstorms in the evening, then chance of showers and slight
chance of thunderstorms after midnight. Lows in the upper 40s.
Winds generally less than 10 mph.
.TUESDAY...Showers and chance of thunderstorms. Lows in the upper
40s. Highs in the upper 60s. Winds generally less than 10 mph.
.WEDNESDAY...Showers and chance of thunderstorms. Lows in the mid
40s. Highs in the lower 60s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with showers likely and chance of
thunderstorms. Lows in the mid 40s. Highs in the mid 60s. Winds
generally less than 10 mph.
.FRIDAY...Partly cloudy with chance of showers and thunderstorms.
Lows in the lower 40s. Highs in the mid 60s.
.SATURDAY...Mostly sunny. Chance of showers and thunderstorms in
the afternoon. Highs in the upper 60s.
$$
WYZ277>279-251045-
Lincoln and Uinta Counties/Lower Elevations-
Upper Green River Basin/Rock Springs BLM-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Evanston, Fort Bridger, Kemmerer,
Big Piney, Farson, Pinedale, Green River, Rock Springs,
and Wamsutter
243 AM MDT Sun Aug 24 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Patchy smoke through the day. Slight chance of
showers early in the afternoon. Slight chance
of thunderstorms in the afternoon. Chance of
showers late in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....72-77.
24 hr trend......6 degrees cooler.
Min humidity........31-37 percent.
24 hr trend......13 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then west
around 10 mph with gusts to around 25 mph.
Ridge top winds.....East around 10 mph until 1200, then west.
Chc of wetting rain.Less than 5 percent.
Transport winds.....East around 10 mph until 1200, then west.
Mixing Height.......800-2800 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Patchy smoke through the night.
Slight chance of thunderstorms in the evening.
Chance of showers through the night. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....46-51.
24 hr trend......4 degrees cooler.
Max humidity........77-83 percent.
24 hr trend......16 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph with gusts to around
25 mph until 2100, then northeast with gusts to
around 25 mph until 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....North around 15 mph until 2400, then east.
Chc of wetting rain.5 percent.
Transport winds.....Northwest around 15 mph until 2400, then east.
Mixing Height.......2000-4000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor to fair.
.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Patchy smoke early in the morning. Chance of
showers in the morning. Slight chance of
thunderstorms late in the morning, then showers
likely and chance of thunderstorms in the
afternoon. Chance of precipitation 70 percent.
Chance of thunder...50 percent.
Max temperature.....69-74.
24 hr trend......2 degrees cooler.
Min humidity........51-57 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....East around 10 mph.
Chc of wetting rain.Zero percent until 1200, then 30 percent.
Transport winds.....East around 10 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the lower 50s. Winds generally
less than 10 mph.
.TUESDAY...Showers and chance of thunderstorms. Lows in the lower
50s. Highs in the mid 70s. Winds generally less than 10 mph.
.WEDNESDAY...Showers and chance of thunderstorms. Lows in the
upper 40s. Highs in the upper 60s. Winds generally less than
10 mph.
.THURSDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the mid 40s. Highs around 70. Winds
generally less than 10 mph.
.FRIDAY...Partly cloudy with chance of showers and thunderstorms.
Lows in the mid 40s. Highs in the lower 70s.
.SATURDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 70s.
$$
WYZ289-251045-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
243 AM MDT Sun Aug 24 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers late in
the afternoon. Slight chance of thunderstorms
late in the afternoon. Chance of showers late
in the afternoon. Chance of precipitation 50
percent.
Chance of thunder...20 percent.
Max temperature.....71-76.
24 hr trend......5 degrees cooler.
Min humidity........34-40 percent.
24 hr trend......19 percent wetter.
20-foot winds.......Northeast winds around 10 mph with higher
gusts.
Ridge top winds.....Northeast around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 15 mph until 1200, then
northwest.
Mixing Height.......800-2800 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of thunderstorms
in the evening. Chance of showers until early
morning, then slight chance of showers early in
the morning. Chance of precipitation 50
percent.
Chance of thunder...20 percent.
Min temperature.....50-55.
24 hr trend......2 degrees cooler.
Max humidity........80-86 percent.
24 hr trend......12 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds around 10 mph with gusts to
around 25 mph until 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....Northeast 10 to 15 mph.
Mixing Height.......2000-4000 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Partly cloudy. Slight chance of showers in the
morning, then chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....71-76.
24 hr trend......2 degrees cooler.
Min humidity........34-40 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northeast around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northeast 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 5000-7000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then slight chance of showers after
midnight. Lows in the lower 50s. East winds around 10 mph.
.TUESDAY...Cloudy with showers likely and slight chance of
thunderstorms. Lows in the mid 50s. Highs in the upper 70s. Winds
generally less than 10 mph.
.WEDNESDAY...Showers and chance of thunderstorms. Lows in the
lower 50s. Highs around 70. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with showers likely and chance of
thunderstorms. Lows in the lower 50s. Highs in the lower 70s.
West winds around 10 mph.
.FRIDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
.SATURDAY...Mostly sunny. Chance of showers and thunderstorms in
the afternoon. Highs in the lower 70s.
$$
WYZ300-251045-
Casper Mountain-
243 AM MDT Sun Aug 24 2025
.TODAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the afternoon.
Chance of precipitation 40 percent.
Chance of thunder...20 percent.
Max temperature.....68-73.
24 hr trend......5 degrees cooler.
Min humidity........49-55 percent.
24 hr trend......26 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northeast around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 1200, then north.
Mixing Height.......800-2800 ft agl until 1200, then 3800-5800 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of thunderstorms
in the evening. Slight chance of showers
through the night. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Min temperature.....49-54.
24 hr trend......2 degrees cooler.
Max humidity........83-89 percent.
24 hr trend......5 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......East winds around 10 mph and gusty until 2100,
then downslope/downvalley 4-7 mph.
Ridge top winds.....Southeast 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....East 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 2400, then 200-800 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Partly cloudy. Slight chance of showers in the
morning, then chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 40 percent.
Chance of thunder...30 percent.
Max temperature.....69-74.
24 hr trend......Unchanged.
Min humidity........41-47 percent.
24 hr trend......10 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northeast 5 to 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 5 to 10 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 5000-7000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly cloudy. Lows in the lower 50s. Winds
generally less than 10 mph.
.TUESDAY...Mostly cloudy with chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the mid 70s. Winds
generally less than 10 mph.
.WEDNESDAY...Cloudy with showers and chance of thunderstorms.
Lows in the lower 50s. Highs in the upper 60s. Winds generally
less than 10 mph.
.THURSDAY...Partly cloudy with showers likely and chance of
thunderstorms. Lows in the lower 50s. Highs in the upper 60s.
Winds generally less than 10 mph.
.FRIDAY...Partly cloudy with chance of showers and thunderstorms.
Lows around 50. Highs in the upper 60s.
.SATURDAY...Partly cloudy. Chance of showers and thunderstorms in
the afternoon. Highs in the upper 60s.
$$