Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
093
FNUS55 KRIW 061202
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
501 AM MST Sat Dec 6 2025
.DISCUSSION...
***This product is currently automated with no discussion
and will not be refreshed with all forecast updates. It should
be used for planning purposes only. If you need additional fire
weather information, please contact the NWS office in Riverton,
Wyoming. The human written discussion section along with the fire
weather forecast will resume regular operations sometime in
Spring 2026.***
---Thunderstorms imply strong gusty and erratic winds---
WYZ280-062300-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
501 AM MST Sat Dec 6 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of snow showers early in the
morning. Chance of snow 20 percent.
Chance of thunder...0 percent.
Max temperature.....38-43.
24 hr trend......5 degrees warmer.
Min humidity........57-63 percent.
24 hr trend......5 percent wetter.
20-foot winds.......West winds around 20 mph with gusts to around
30 mph until 1500, then northwest around 10 mph
with higher gusts.
Ridge top winds.....West 20 to 25 mph until 1600, then northwest
around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph until 1200. Northwest 15 to
20 mph after 1500.
Mixing Height.......1000-3000 ft agl until 1200, then 2200-4200 ft
agl until 1600, then 600-1600 ft agl.
Smoke dispersal.....Fair to good until 1600, then poor.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....19-24.
24 hr trend......7 degrees cooler.
Max humidity........80-86 percent.
24 hr trend......7 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then
west 10 to 15 mph. Gusts up to 20 mph.
Ridge top winds.....West 10 to 15 mph until 0300, then around 20
mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph until 0100, then around 20
mph.
Mixing Height.......400-600 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny then
becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....35-40.
24 hr trend......4 degrees cooler.
Min humidity........46-52 percent.
24 hr trend......11 percent drier.
20-foot winds.......West winds around 15 mph with gusts to around
25 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......600-2600 ft agl until 1200, then 1200-3200 ft
agl until 1700, then 400-600 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Lows in the mid 20s. Southwest
winds around 20 mph.
.MONDAY...Partly cloudy. Lows in the lower 30s. Highs in the
lower 40s. Southwest winds around 20 mph.
.TUESDAY...Mostly cloudy with chance of showers and snow showers.
Lows in the upper 20s. Highs around 50. West winds around 20 mph.
.WEDNESDAY...Mostly cloudy with chance of showers and snow
showers. Lows around 30. Highs around 50. West winds around
15 mph.
.THURSDAY...Mostly cloudy with chance of showers and snow
showers. Lows around 20. Highs in the lower 40s.
.FRIDAY...Partly cloudy. Highs in the lower 40s.
$$
WYZ283-062300-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
501 AM MST Sat Dec 6 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of snow showers early in the
morning. Chance of snow 20 percent.
Chance of thunder...0 percent.
Max temperature.....38-43.
24 hr trend......5 degrees warmer.
Min humidity........51-57 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Northwest winds 15 to 20 mph. Gusts up to 25
mph until 1200, then 30 mph until 1500, then 20
mph.
Ridge top winds.....Northwest 20 to 25 mph until 1700, then around
15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph until 1100. Northwest 15 to
20 mph after 1600.
Mixing Height.......800-2800 ft agl until 1200, then 2200-4000 ft
agl until 1600, then 600-1400 ft agl.
Smoke dispersal.....Fair to good until 1600, then poor.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....19-24.
24 hr trend......8 degrees cooler.
Max humidity........71-77 percent.
24 hr trend......3 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph with gusts to around
15 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......600-1000 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....34-39.
24 hr trend......5 degrees cooler.
Min humidity........46-52 percent.
24 hr trend......3 percent drier.
20-foot winds.......Southwest winds around 10 mph and gusty.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Lows in the lower 20s. Southwest
winds around 15 mph.
.MONDAY...Partly cloudy. Lows around 30. Highs in the mid 40s.
Southwest winds around 15 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly cloudy with chance of showers
and snow showers. Lows 29 to 34. Highs in the lower 50s. West
winds 15 to 20 mph.
.THURSDAY...Partly cloudy with slight chance of showers and snow
showers. Lows in the mid 20s. Highs in the mid 40s.
.FRIDAY...Partly cloudy. Highs in the mid 40s.
$$
WYZ285-062300-
South Bighorn Mountains-
501 AM MST Sat Dec 6 2025
...WINTER STORM WARNING IN EFFECT UNTIL 5 PM MST THIS AFTERNOON...
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Patchy blowing snow in the morning. Chance of
snow showers through the day. Chance of snow 50
percent.
Chance of thunder...0 percent.
Max temperature.....33-38.
24 hr trend......5 degrees warmer.
Min humidity........65-71 percent.
24 hr trend......12 percent wetter.
20-foot winds.......Northwest winds 15 to 20 mph with gusts to
around 30 mph.
Ridge top winds.....Northwest 20 to 25 mph until 1600, then around
15 mph.
Chc of wetting rain.17 percent.
Transport winds.....Northwest 20 to 25 mph until 1700, then around
15 mph.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of snow showers until early morning.
Slight chance of snow showers after midnight.
Chance of snow 50 percent.
Chance of thunder...0 percent.
Min temperature.....18-23.
24 hr trend......4 degrees cooler.
Max humidity........80-86 percent.
24 hr trend......8 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......West winds 10 to 15 mph and gusty.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.15 percent until 2400, then 5 percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......200-600 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny then
becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....29-34.
24 hr trend......4 degrees cooler.
Min humidity........49-55 percent.
24 hr trend......15 percent drier.
20-foot winds.......West winds 10 to 15 mph with higher gusts.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph until 1600, then southwest
around 15 mph.
Mixing Height.......400-2400 ft agl until 1700, then 200-400 ft
agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Lows in the lower 20s. Southwest
winds around 15 mph.
.MONDAY...Partly cloudy. Lows in the upper 20s. Highs in the mid
30s. Southwest winds around 15 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly cloudy with chance of snow
showers and showers. Lows 27 to 32. Highs 40 to 45. West winds
15 to 20 mph.
.THURSDAY...Mostly cloudy. Chance of snow showers and showers.
Lows in the lower 20s. Highs in the mid 30s.
.FRIDAY...Partly cloudy. Highs in the mid 30s.
$$
WYZ281-062300-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
501 AM MST Sat Dec 6 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of snow showers in the morning.
Slight chance of snow showers early in the
afternoon. Chance of snow 20 percent.
Chance of thunder...0 percent.
Max temperature.....35-40.
24 hr trend......1 degree warmer.
Min humidity........63-69 percent.
24 hr trend......16 percent wetter.
20-foot winds.......Northwest winds 10 to 15 mph. 25 mph after 0900
until 1500, then 15 mph.
Ridge top winds.....Northwest 15 to 20 mph until 1600, then north.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 15 to 20 mph until 1100. North after
1600.
Mixing Height.......400-1800 ft agl until 1100, then 1400-3200 ft
agl until 1700, then 1000-1200 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of snow showers in the evening.
Chance of snow 20 percent.
Chance of thunder...0 percent.
Min temperature.....20-25.
24 hr trend......4 degrees cooler.
Max humidity........89-95 percent.
24 hr trend......9 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph until 2400, then
southwest around 10 mph.
Ridge top winds.....North around 10 mph until 2000, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph until 2000, then southwest.
Mixing Height.......400-1400 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....36-41.
24 hr trend......1 degree warmer.
Min humidity........48-54 percent.
24 hr trend......21 percent drier.
20-foot winds.......West winds around 10 mph and gusty.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph until 1700, then southwest.
Mixing Height.......400-2200 ft agl until 1100, then 2000-3600 ft
agl until 1600, then 400-1400 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Lows in the lower 20s. Southwest
winds around 10 mph.
.MONDAY...Partly cloudy. Lows in the upper 20s. Highs in the mid
40s. Southwest winds around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly cloudy with chance of showers
and snow showers. Lows in the upper 20s. Highs 46 to 51. West
winds 10 to 15 mph.
.THURSDAY...Mostly cloudy with chance of showers and snow
showers. Lows around 17. Highs in the upper 30s.
.FRIDAY...Mostly cloudy. Slight chance of snow showers in the
morning. Highs in the upper 30s.
$$
WYZ282-062300-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
501 AM MST Sat Dec 6 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of snow showers through the day. Chance
of rain showers in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...0 percent.
Max temperature.....33-38.
24 hr trend......3 degrees warmer.
Min humidity........59-65 percent.
24 hr trend......12 percent wetter.
20-foot winds.......West winds around 10 mph until 1200, then north
until 1500, then upslope/upvalley 5-9 mph.
Gusts up to 15 mph.
Ridge top winds.....Southwest around 15 mph until 1100, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 1500, then north.
Mixing Height.......800-2800 ft agl until 1700, then 600-800 ft
agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of rain showers early in the
evening. Chance of snow showers early in the
evening. Chance of precipitation 50 percent.
Chance of thunder...0 percent.
Min temperature.....16-21.
24 hr trend......6 degrees cooler.
Max humidity........82-88 percent.
24 hr trend......5 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph until 0300, then
southwest around 10 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South around 10 mph until 2300, then southwest.
Mixing Height.......400-800 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....31-36.
24 hr trend......2 degrees cooler.
Min humidity........47-53 percent.
24 hr trend......17 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 10 mph.
Ridge top winds.....South 10 to 15 mph until 1400, then southeast.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph until 1300, then southeast.
Mixing Height.......400-2000 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Lows in the lower 20s. Winds
generally less than 10 mph.
.MONDAY...Partly cloudy. Lows in the upper 20s. Highs in the
lower 40s. South winds around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly cloudy with chance of showers
and snow showers. Lows around 30. Highs 46 to 51. West winds
around 10 mph.
.THURSDAY...Mostly cloudy with chance of showers and snow
showers. Lows in the lower 20s. Highs in the lower 40s.
.FRIDAY...Partly cloudy. Highs in the upper 30s.
$$
WYZ275-062300-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
501 AM MST Sat Dec 6 2025
.TODAY...
Sky/weather.........Mostly cloudy. Chance of snow showers and rain
showers through the day. Chance of
precipitation 50 percent.
Chance of thunder...0 percent.
Max temperature.....31-36.
24 hr trend......2 degrees warmer.
Min humidity........67-73 percent.
24 hr trend......11 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph until 1500, then
upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....West 10 to 15 mph until 1300, then northwest.
Chc of wetting rain.7 percent.
Transport winds.....Southwest around 10 mph until 1000, then
northwest.
Mixing Height.......400-1800 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of snow showers and rain showers in the
evening. Slight chance of snow showers after
midnight. Chance of precipitation 50 percent.
Chance of thunder...0 percent.
Min temperature.....16-21.
24 hr trend......7 degrees cooler.
Max humidity........85-91 percent.
24 hr trend......3 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest around 10 mph until 2300, then south.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......400-800 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....29-34.
24 hr trend......1 degree cooler.
Min humidity........53-59 percent.
24 hr trend......15 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
southeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph until 1400, then
southeast.
Mixing Height.......400-1800 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Lows in the lower 20s. Southeast
winds around 10 mph.
.MONDAY...Mostly cloudy. Lows in the upper 20s. Highs around 40.
South winds around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly cloudy with chance of showers
and snow showers. Lows in the upper 20s. Highs 43 to 48. West
winds around 10 mph.
.THURSDAY...Mostly cloudy with chance of showers and snow
showers. Lows around 20. Highs in the upper 30s.
.FRIDAY...Mostly cloudy. Slight chance of snow showers in the
morning. Highs in the mid 30s.
$$
WYZ276-062300-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
501 AM MST Sat Dec 6 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of snow showers. Chance of snow
20 percent.
Chance of thunder...0 percent.
Max temperature.....35-40.
24 hr trend......2 degrees warmer.
Min humidity........56-62 percent.
24 hr trend......13 percent wetter.
20-foot winds.......Northwest winds 15 to 20 mph with gusts to
around 25 mph.
Ridge top winds.....West 15 to 20 mph until 1200, then northwest 20
to 25 mph until 1700, then west around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph until 1100, then northwest 25
to 30 mph until 1500, then west 15 to 20 mph.
Mixing Height.......1200-3200 ft agl until 1700, then 600-1200 ft
agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of snow showers
early in the evening. Chance of snow 20
percent.
Chance of thunder...0 percent.
Min temperature.....21-26.
24 hr trend......5 degrees cooler.
Max humidity........70-76 percent.
24 hr trend......9 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 20 mph
until 0300, then 25 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......600-1200 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy. Slight chance of snow showers
late in the afternoon. Chance of snow 20
percent.
Chance of thunder...0 percent.
Max temperature.....34-39.
24 hr trend......1 degree cooler.
Min humidity........48-54 percent.
24 hr trend......10 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......800-2800 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Slight chance of snow showers in
the evening. Lows in the upper 20s. Southwest winds around
15 mph.
.MONDAY...Mostly cloudy. Slight chance of showers and snow
showers. Lows in the mid 30s. Highs in the mid 40s. Southwest
winds around 15 mph.
.TUESDAY...Showers and snow showers likely. Lows in the lower
30s. Highs in the upper 40s. West winds around 15 mph.
.WEDNESDAY...Mostly cloudy with showers likely and chance of snow
showers. Lows in the lower 30s. Highs in the mid 40s. West winds
around 15 mph.
.THURSDAY...Mostly cloudy. Chance of showers and snow showers.
Lows in the lower 20s. Highs in the upper 30s.
.FRIDAY...Partly cloudy with slight chance of snow showers. Highs
in the upper 30s.
$$
WYZ287-062300-
Owl Creek Mountains-
501 AM MST Sat Dec 6 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....36-41.
24 hr trend......7 degrees warmer.
Min humidity........44-50 percent.
24 hr trend......9 percent drier.
20-foot winds.......Northwest winds around 20 mph until 1500, then
north around 10 mph. Gusts up to 25 mph until
1500, then 15 mph.
Ridge top winds.....Northwest 20 to 25 mph until 1500, then north
10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 25 to 30 mph until 1500. Around 10
mph after 1700.
Mixing Height.......400-1800 ft agl until 1100, then 2600-4600 ft
agl until 1500, then 600-2600 ft agl.
Smoke dispersal.....Fair to good until 1600, then poor.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....18-23.
24 hr trend......5 degrees cooler.
Max humidity........70-76 percent.
24 hr trend......3 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then
west 10 to 15 mph and gusty.
Ridge top winds.....West 10 to 15 mph until 2200, then 15 to 20
mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph until 0400, then around 20
mph.
Mixing Height.......200-800 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....30-35.
24 hr trend......4 degrees cooler.
Min humidity........41-47 percent.
24 hr trend......3 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph with higher gusts.
Ridge top winds.....Southwest 15 to 20 mph until 1300, then south.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph until 1000, then southwest.
Mixing Height.......200-2200 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Lows in the mid 20s. Southwest
winds around 15 mph.
.MONDAY...Partly cloudy. Lows in the lower 30s. Highs in the
lower 40s. Southwest winds around 15 mph.
.TUESDAY...Mostly cloudy with snow showers and showers likely.
Lows in the lower 30s. Highs in the upper 40s. West winds around
15 mph.
.WEDNESDAY...Mostly cloudy with chance of showers and snow
showers. Lows in the lower 30s. Highs in the mid 40s. West winds
around 15 mph.
.THURSDAY...Mostly cloudy. Chance of snow showers and showers.
Lows in the mid 20s. Highs around 40.
.FRIDAY...Partly cloudy. Highs in the upper 30s.
$$
WYZ286-062300-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
501 AM MST Sat Dec 6 2025
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Patchy blowing snow in the morning. Snow
showers through the day. Snow accumulation up
to 7 inches. Chance of snow near 100 percent.
Chance of thunder...0 percent.
Max temperature.....30-35.
24 hr trend......3 degrees warmer.
Min humidity........60-66 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Breezy. West winds 20 to 25 mph with gusts to
around 35 mph.
Ridge top winds.....West 25 to 30 mph until 1600, then around 20
mph.
Chc of wetting rain.45 percent until 1200, then 25 percent.
Transport winds.....West 30 to 35 mph until 1600, then 20 to 25
mph.
Mixing Height.......1600-3600 ft agl until 1700, then 1000-1600 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of snow showers. Chance
of snow 50 percent.
Chance of thunder...0 percent.
Min temperature.....15-20.
24 hr trend......7 degrees cooler.
Max humidity........74-80 percent.
24 hr trend......13 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 20 mph with gusts to around
35 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.15 percent until 2400, then 5 percent.
Transport winds.....West 20 to 25 mph until 0200, then around 30
mph.
Mixing Height.......400-1800 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of snow showers, then chance of
snow showers late in the afternoon. Chance of
snow 50 percent.
Chance of thunder...0 percent.
Max temperature.....25-30.
24 hr trend......5 degrees cooler.
Min humidity........61-67 percent.
24 hr trend......4 percent drier.
20-foot winds.......West winds around 20 mph with gusts to around
35 mph.
Ridge top winds.....West around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 25 to 30 mph.
Mixing Height.......1000-3000 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy with chance of snow showers. Lows
in the lower 20s. West winds around 20 mph.
.MONDAY...Breezy. Mostly cloudy with chance of snow showers. Lows
in the upper 20s. Highs in the lower 30s. West winds around
25 mph.
.TUESDAY THROUGH WEDNESDAY...Breezy. Snow showers with showers
likely. Lows in the upper 20s. Highs in the upper 30s. West winds
20 to 25 mph.
.THURSDAY...Partly cloudy. Chance of snow showers. Lows in the
mid 20s. Highs in the lower 30s.
.FRIDAY...Partly cloudy. Chance of snow showers in the morning,
then slight chance of snow showers in the afternoon. Highs in the
mid 30s.
$$
WYZ140-062300-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
501 AM MST Sat Dec 6 2025
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...
.TODAY...
Sky/weather.........Mostly cloudy. Patchy blowing snow in the
morning. Patchy blowing snow late in the
morning. Snow showers through the day. Snow
accumulation up to 6 inches. Chance of snow
near 100 percent.
Chance of thunder...0 percent.
Max temperature.....30-35.
24 hr trend......4 degrees warmer.
Min humidity........73-79 percent.
24 hr trend......Unchanged.
20-foot winds.......West winds around 15 mph with gusts to around
25 mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.40 percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......1200-3200 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy. Chance of snow showers
early in the evening, then slight chance of
snow showers late in the evening. Chance of
snow showers after midnight. Chance of snow 50
percent.
Chance of thunder...0 percent.
Min temperature.....14-19.
24 hr trend......8 degrees cooler.
Max humidity........80-86 percent.
24 hr trend......5 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 15 mph with gusts to around
25 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.7 percent.
Transport winds.....West around 20 mph.
Mixing Height.......400-1600 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly cloudy. Chance of snow showers. Snow
showers late in the afternoon. Snow
accumulation up to 2 inches. Chance of snow
near 100 percent.
Chance of thunder...0 percent.
Max temperature.....26-31.
24 hr trend......4 degrees cooler.
Min humidity........73-79 percent.
24 hr trend......1 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.7 percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Snow showers in the evening, then chance of snow
showers after midnight. Lows around 20. Southwest winds around
15 mph.
.MONDAY THROUGH TUESDAY...Snow showers. Lows in the upper 20s.
Highs 30 to 35. Southwest winds around 15 mph.
.WEDNESDAY...Snow showers and showers. Lows in the mid 20s. Highs
in the mid 30s. West winds around 15 mph.
.THURSDAY...Mostly cloudy with snow showers likely. Lows around
20. Highs in the lower 30s.
.FRIDAY...Mostly cloudy. Chance of snow showers in the morning,
then slight chance of snow showers in the afternoon. Highs in the
mid 30s.
$$
WYZ415-062300-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
501 AM MST Sat Dec 6 2025
...WINTER STORM WARNING IN EFFECT UNTIL 2 PM MST THIS AFTERNOON...
.TODAY...
Sky/weather.........Mostly cloudy. Patchy blowing snow in the
morning. Snow showers through the day. Slight
chance of thunderstorms in the afternoon. Snow
accumulation of 1 to 8 inches. Chance of
precipitation near 100 percent.
Chance of thunder...10 percent.
Max temperature.....27-32.
24 hr trend......3 degrees warmer.
Min humidity........77-83 percent.
24 hr trend......Unchanged.
20-foot winds.......West winds 15 to 20 mph with gusts to around 25
mph.
Ridge top winds.....West 20 to 25 mph until 1700, then around 15
mph.
Chc of wetting rain.55 percent until 1200, then 45 percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......1200-3200 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Snow showers likely early in the
evening, then chance of snow showers in the
late evening and overnight. Snow showers likely
early in the morning. Snow accumulation up to 3
inches. Chance of snow 70 percent.
Chance of thunder...0 percent.
Min temperature.....13-18.
24 hr trend......8 degrees cooler.
Max humidity........87-93 percent.
24 hr trend......5 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds 10 to 15 mph and gusty.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.30 percent until 2400, then 10 percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......600-1600 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy. Snow showers likely in
the morning, then snow showers late in the
morning. Snow accumulation up to 1 inch. Chance
of snow near 100 percent.
Chance of thunder...0 percent.
Max temperature.....24-29.
24 hr trend......3 degrees cooler.
Min humidity........77-83 percent.
24 hr trend......3 percent drier.
20-foot winds.......Southwest winds around 10 mph with higher
gusts.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.7 percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......800-2800 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Snow showers. Lows in the lower 20s. Southwest
winds around 10 mph.
.MONDAY...Snow showers. Lows in the upper 20s. Highs in the lower
30s. Southwest winds around 10 mph.
.TUESDAY...Snow showers and showers. Lows around 30. Highs in the
mid 30s. Southwest winds around 15 mph.
.WEDNESDAY...Snow showers and showers. Lows in the upper 20s.
Highs in the upper 30s. Southwest winds around 15 mph.
.THURSDAY...Mostly cloudy with snow showers and showers likely.
Lows in the lower 20s. Highs in the mid 30s.
.FRIDAY...Mostly cloudy. Chance of snow showers and showers in
the morning, then chance of snow showers and slight chance of
showers in the afternoon. Highs in the mid 30s.
$$
WYZ416-062300-
West Wind River Mountains/East Zone Bridger Teton NF-
501 AM MST Sat Dec 6 2025
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy. Patchy blowing snow in
the morning. Snow showers in the morning. Snow
showers likely late in the morning. Chance of
snow showers early in the afternoon. Snow
accumulation of 1 to 5 inches. Chance of snow
near 100 percent.
Chance of thunder...0 percent.
Max temperature.....26-31.
24 hr trend......2 degrees warmer.
Min humidity........73-79 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Breezy. West winds 20 to 25 mph until 1500,
then around 15 mph. Gusts up to 30 mph.
Ridge top winds.....West 25 to 30 mph until 1600, then around 20
mph.
Chc of wetting rain.70 percent until 1200, then 15 percent.
Transport winds.....West 25 to 30 mph until 1600, then around 20
mph.
Mixing Height.......1400-3400 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy. Snow
showers likely in the evening. Chance of snow
showers after midnight. Snow accumulation up to
1 inch. Chance of snow 70 percent.
Chance of thunder...0 percent.
Min temperature.....10-15.
24 hr trend......10 degrees cooler.
Max humidity........86-92 percent.
24 hr trend......4 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 15 mph with gusts to around
25 mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....West around 20 mph.
Mixing Height.......400-1600 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of snow showers, then snow showers
likely late in the afternoon. Little or no snow
accumulation. Chance of snow 70 percent.
Chance of thunder...0 percent.
Max temperature.....21-26.
24 hr trend......5 degrees cooler.
Min humidity........71-77 percent.
24 hr trend......3 percent drier.
20-foot winds.......West winds 10 to 15 mph with higher gusts.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy with snow showers likely. Lows
around 16. West winds around 10 mph.
.MONDAY...Cloudy with chance of snow showers. Lows in the lower
20s. Highs in the upper 20s. West winds around 15 mph.
.TUESDAY THROUGH WEDNESDAY...Snow showers. Lows in the upper 20s.
Highs 32 to 37. West winds around 20 mph.
.THURSDAY...Mostly cloudy with chance of snow showers. Lows in
the lower 20s. Highs in the lower 30s.
.FRIDAY...Partly cloudy with slight chance of snow showers. Highs
in the lower 30s.
$$
WYZ288-062300-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
501 AM MST Sat Dec 6 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Patchy blowing snow in the morning. Patchy
blowing snow late in the morning. Chance of
snow showers through the day. Chance of snow 50
percent.
Chance of thunder...0 percent.
Max temperature.....30-35.
24 hr trend......2 degrees warmer.
Min humidity........63-69 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Breezy. West winds 20 to 25 mph with gusts to
around 40 mph.
Ridge top winds.....West 25 to 30 mph.
Chc of wetting rain.30 percent until 1200, then 5 percent.
Transport winds.....West 30 to 35 mph until 1600, then around 25
mph.
Mixing Height.......1200-3200 ft agl until 1700, then 600-1200 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of snow showers in the
evening. Slight chance of snow showers after
midnight. Chance of snow showers early in the
morning. Chance of snow 50 percent.
Chance of thunder...0 percent.
Min temperature.....11-16.
24 hr trend......9 degrees cooler.
Max humidity........74-80 percent.
24 hr trend......6 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 20 mph with gusts to around
30 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......400-1200 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy. Chance of snow showers. Chance
of snow 50 percent.
Chance of thunder...0 percent.
Max temperature.....25-30.
24 hr trend......5 degrees cooler.
Min humidity........62-68 percent.
24 hr trend......3 percent drier.
20-foot winds.......West winds 15 to 20 mph with gusts to around 30
mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 25 mph.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy with chance of snow showers. Lows
around 20. West winds around 20 mph.
.MONDAY...Breezy. Mostly cloudy. Chance of snow showers. Lows in
the mid 20s. Highs in the lower 30s. West winds around 25 mph.
.TUESDAY THROUGH WEDNESDAY...Windy. Snow showers likely and
chance of showers. Lows in the lower 30s. Highs 37 to 42. West
winds 25 to 30 mph.
.THURSDAY...Partly cloudy. Chance of snow showers and slight
chance of showers. Lows in the mid 20s. Highs in the upper 30s.
.FRIDAY...Partly cloudy. Slight chance of snow showers in the
morning. Highs in the upper 30s.
$$
WYZ414-062300-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
501 AM MST Sat Dec 6 2025
...WINTER STORM WARNING IN EFFECT UNTIL 2 PM MST THIS AFTERNOON...
.TODAY...
Sky/weather.........Mostly cloudy. Patchy blowing snow in the
morning. Snow showers in the morning. Slight
chance of thunderstorms through the day. Snow
showers likely in the afternoon. Snow
accumulation up to 7 inches. Chance of
precipitation 90 percent.
Chance of thunder...10 percent.
Max temperature.....27-32.
24 hr trend......3 degrees warmer.
Min humidity........78-84 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Breezy. West winds 20 to 25 mph until 1500,
then around 15 mph. Gusts up to 35 mph.
Ridge top winds.....West 25 to 30 mph until 1500, then around 20
mph.
Chc of wetting rain.42 percent.
Transport winds.....West 30 to 35 mph until 1400, then 20 to 25
mph.
Mixing Height.......1000-3000 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy. Snow
showers likely in the evening. Chance of snow
showers after midnight. Snow accumulation up to
3 inches. Chance of snow 70 percent.
Chance of thunder...0 percent.
Min temperature.....15-20.
24 hr trend......8 degrees cooler.
Max humidity........88-94 percent.
24 hr trend......4 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 15 mph with gusts to around
30 mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.30 percent until 2400, then 5 percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......400-1800 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy. Chance of snow showers
in the morning, then snow showers likely late
in the morning. Snow showers late in the
afternoon. Snow accumulation up to 1 inch.
Chance of snow 90 percent.
Chance of thunder...0 percent.
Max temperature.....24-29.
24 hr trend......3 degrees cooler.
Min humidity........75-81 percent.
24 hr trend......4 percent drier.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.5 percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Snow showers. Lows in the lower 20s. West winds
around 10 mph.
.MONDAY...Snow showers. Lows in the mid 20s. Highs in the lower
30s. West winds around 15 mph.
.TUESDAY THROUGH WEDNESDAY...Snow showers and showers. Lows in
the lower 30s. Highs in the upper 30s. West winds around 20 mph.
.THURSDAY...Mostly cloudy with chance of snow showers and
showers. Lows in the upper 20s. Highs in the mid 30s.
.FRIDAY...Mostly cloudy. Chance of snow showers and showers in
the morning, then slight chance of showers and snow showers in
the afternoon. Highs in the mid 30s.
$$
WYZ278-062300-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Big Piney, Farson, and Pinedale
501 AM MST Sat Dec 6 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Patchy blowing snow in the morning. Chance of
snow showers early in the morning. Slight
chance of snow showers late in the morning,
then chance of snow showers in the late morning
and afternoon. Chance of snow 50 percent.
Chance of thunder...0 percent.
Max temperature.....30-35.
24 hr trend......2 degrees warmer.
Min humidity........64-70 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Breezy. West winds 20 to 25 mph with gusts to
around 35 mph.
Ridge top winds.....West 25 to 30 mph until 1700, then around 20
mph.
Chc of wetting rain.10 percent until 1200, then zero percent.
Transport winds.....Northwest 30 to 35 mph until 1600, then west 20
to 25 mph.
Mixing Height.......600-2600 ft agl until 1100, then 1400-3400 ft
agl until 1700, then 1000-1200 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of snow showers early in
the evening. Slight chance of snow showers late
in the evening. Chance of snow 50 percent.
Chance of thunder...0 percent.
Min temperature.....11-16.
24 hr trend......13 degrees cooler.
Max humidity........86-92 percent.
24 hr trend......1 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......600-1200 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of snow showers late in the afternoon.
Chance of snow 50 percent.
Chance of thunder...0 percent.
Max temperature.....26-31.
24 hr trend......4 degrees cooler.
Min humidity........64-70 percent.
24 hr trend......2 percent drier.
20-foot winds.......West winds around 10 mph with higher gusts.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy with chance of snow showers. Lows
around 17. West winds around 10 mph.
.MONDAY...Mostly cloudy with chance of snow showers. Lows in the
mid 20s. Highs in the upper 30s. West winds around 10 mph.
.TUESDAY...Mostly cloudy with chance of showers and snow showers.
Lows around 30. Highs in the lower 40s. West winds around 20 mph.
.WEDNESDAY...Mostly cloudy with chance of showers and slight
chance of snow showers. Lows in the lower 30s. Highs in the mid
40s. West winds around 20 mph.
.THURSDAY...Partly cloudy with slight chance of showers and snow
showers. Lows in the mid 20s. Highs in the mid 40s.
.FRIDAY...Partly cloudy. Highs in the mid 40s.
$$
WYZ277-062300-
Lincoln and Uinta Counties/Lower Elevations-
Including the cities of Evanston, Fort Bridger, and Kemmerer
501 AM MST Sat Dec 6 2025
...WINTER STORM WARNING IN EFFECT UNTIL 2 PM MST THIS AFTERNOON...
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Patchy blowing snow early in the morning.
Patchy blowing snow in the morning. Chance of
snow showers through the day. Chance of snow 50
percent.
Chance of thunder...0 percent.
Max temperature.....30-35.
24 hr trend......2 degrees warmer.
Min humidity........76-82 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Windy. West winds 25 to 30 mph until 1500, then
around 20 mph. Gusts up to 40 mph until 1500,
then 30 mph.
Ridge top winds.....West 30 to 35 mph until 1400, then 20 to 25
mph.
Chc of wetting rain.7 percent.
Transport winds.....West 35 to 40 mph until 1200, then 25 to 30
mph.
Mixing Height.......600-2600 ft agl until 1000, then 1400-3400 ft
agl until 1700, then 1000-1400 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of snow showers
early in the evening. Chance of snow 20
percent.
Chance of thunder...0 percent.
Min temperature.....15-20.
24 hr trend......11 degrees cooler.
Max humidity........88-94 percent.
24 hr trend......5 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 15 mph with gusts to around
25 mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......400-1200 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of snow showers late in the afternoon.
Chance of snow 50 percent.
Chance of thunder...0 percent.
Max temperature.....26-31.
24 hr trend......2 degrees cooler.
Min humidity........71-77 percent.
24 hr trend......5 percent drier.
20-foot winds.......West winds 10 to 15 mph with higher gusts.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......400-2200 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy with chance of snow showers. Lows
in the lower 20s. West winds around 10 mph.
.MONDAY...Mostly cloudy with chance of snow showers. Lows in the
mid 20s. Highs in the mid 30s. West winds around 15 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly cloudy with chance of showers
and snow showers. Lows in the lower 30s. Highs 39 to 44. West
winds around 20 mph.
.THURSDAY...Partly cloudy with chance of showers and snow
showers. Lows in the upper 20s. Highs in the lower 40s.
.FRIDAY...Partly cloudy. Highs in the lower 40s.
$$
WYZ279-062300-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
501 AM MST Sat Dec 6 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of snow showers early in the
morning. Chance of snow showers early in the
morning, then slight chance of snow showers
early in the morning. Chance of snow 50
percent.
Chance of thunder...0 percent.
Max temperature.....32-37.
24 hr trend......2 degrees warmer.
Min humidity........68-74 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Windy. West winds 25 to 30 mph with gusts to
around 45 mph.
Ridge top winds.....West 30 to 35 mph until 1700, then around 25
mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West 35 to 40 mph until 1700, then around 30
mph.
Mixing Height.......600-2200 ft agl until 1000, then 2200-4200 ft
agl until 1700, then 1000-1400 ft agl.
Smoke dispersal.....Poor to fair until 1000, then very good until
1600, then fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....18-23.
24 hr trend......10 degrees cooler.
Max humidity........80-86 percent.
24 hr trend......4 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 20 mph with gusts to around
30 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 25 mph.
Mixing Height.......600-1200 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....29-34.
24 hr trend......3 degrees cooler.
Min humidity........61-67 percent.
24 hr trend......3 percent drier.
20-foot winds.......West winds around 15 mph with gusts to around
25 mph.
Ridge top winds.....West 20 to 25 mph until 1700, then southwest
around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......800-2800 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Lows in the lower 20s. Southwest
winds around 15 mph.
.MONDAY...Mostly cloudy. Lows in the upper 20s. Highs in the
upper 30s. West winds around 15 mph.
.TUESDAY THROUGH WEDNESDAY...Breezy. Mostly cloudy with slight
chance of showers and snow showers. Lows in the mid 30s. Highs
43 to 48. West winds around 25 mph.
.THURSDAY...Partly cloudy with slight chance of showers and snow
showers. Lows in the lower 30s. Highs in the upper 40s.
.FRIDAY...Partly cloudy. Highs in the mid 40s.
$$
WYZ289-062300-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
501 AM MST Sat Dec 6 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of snow showers early in the
morning. Patchy blowing snow in the morning.
Chance of snow 20 percent.
Chance of thunder...0 percent.
Max temperature.....33-38.
24 hr trend......3 degrees warmer.
Min humidity........57-63 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Breezy. West winds 20 to 25 mph with gusts to
around 40 mph.
Ridge top winds.....West 25 to 30 mph until 1700, then around 20
mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 30 to 35 mph until 1600, then 20 to 25
mph.
Mixing Height.......400-2400 ft agl until 1100, then 2600-4600 ft
agl until 1600, then 600-2000 ft agl.
Smoke dispersal.....Poor to fair until 1100, then good until 1600,
then poor.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....18-23.
24 hr trend......10 degrees cooler.
Max humidity........77-83 percent.
24 hr trend......6 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 15 mph with gusts to around
30 mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph.
Mixing Height.......400-800 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....28-33.
24 hr trend......5 degrees cooler.
Min humidity........55-61 percent.
24 hr trend......1 percent drier.
20-foot winds.......Southwest winds 15 to 20 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Lows in the lower 20s. Southwest
winds around 20 mph.
.MONDAY...Partly cloudy. Lows in the upper 20s. Highs in the
upper 30s. Southwest winds around 20 mph.
.TUESDAY...Breezy. Mostly cloudy with chance of showers and snow
showers. Lows in the lower 30s. Highs in the mid 40s. Southwest
winds around 25 mph.
.WEDNESDAY...Breezy. Mostly cloudy with chance of showers and
snow showers. Lows in the mid 30s. Highs in the upper 40s. West
winds around 25 mph.
.THURSDAY...Partly cloudy with slight chance of showers and snow
showers. Lows in the upper 20s. Highs in the mid 40s.
.FRIDAY...Partly cloudy. Highs in the mid 40s.
$$
WYZ300-062300-
Casper Mountain-
501 AM MST Sat Dec 6 2025
.TODAY...
Sky/weather.........Mostly cloudy. Patchy blowing snow in the
morning. Chance of snow showers in the morning.
Slight chance of snow showers in the afternoon.
Chance of snow 50 percent.
Chance of thunder...0 percent.
Max temperature.....32-37.
24 hr trend......6 degrees warmer.
Min humidity........67-73 percent.
24 hr trend......3 percent drier.
20-foot winds.......West winds 15 to 20 mph with gusts to around 30
mph.
Ridge top winds.....West 20 to 25 mph until 1700, then northwest
around 15 mph.
Chc of wetting rain.10 percent until 1200, then zero percent.
Transport winds.....West 25 to 30 mph until 1600, then northwest 15
to 20 mph.
Mixing Height.......200-2000 ft agl until 1100, then 2600-4000 ft
agl until 1600, then 400-1800 ft agl.
Smoke dispersal.....Poor to fair until 1200, then good until 1600,
then poor.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of snow showers early in the
evening. Slight chance of snow showers late in
the evening. Chance of snow 20 percent.
Chance of thunder...0 percent.
Min temperature.....17-22.
24 hr trend......7 degrees cooler.
Max humidity........78-84 percent.
24 hr trend......7 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds 10 to 15 mph and gusty.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......200-600 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny then
becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....28-33.
24 hr trend......4 degrees cooler.
Min humidity........58-64 percent.
24 hr trend......6 percent drier.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Lows in the lower 20s. Southwest
winds around 20 mph.
.MONDAY...Partly cloudy. Lows in the upper 20s. Highs in the mid
30s. Southwest winds around 20 mph.
.TUESDAY...Breezy. Cloudy with chance of snow showers and
showers. Lows in the upper 20s. Highs around 40. Southwest winds
around 25 mph.
.WEDNESDAY...Mostly cloudy with chance of showers and snow
showers. Lows in the lower 30s. Highs in the lower 40s. West
winds around 20 mph.
.THURSDAY...Mostly cloudy with chance of snow showers and
showers. Lows in the lower 20s. Highs in the upper 30s.
.FRIDAY...Partly cloudy. Highs in the upper 30s.
$$