756
FNUS55 KMSO 280951
FWFMSO

Fire Weather Planning Forecast for Wrn Montana and N Cntrl Idaho
National Weather Service Missoula MT
351 AM MDT Thu Aug 28 2025


.DISCUSSION...

Idaho (Zones 102 and 103): Relatively cool, moist and showery
conditions will be in place today as a low pressure system continues to
move through the region. A warming and drying trend begins Friday into
the weekend as high pressure builds.

Northwest MT (Zones 104 and 105): Cooler, moist and showery conditions
will be in place today as a low pressure system continues to move
through the region. Showery conditions with scattered thunderstorms are
anticipated on Friday. A warming and drying trend begins Saturday into
the weekend as high pressure builds.

West Central MT (Zones 106, 107 and 108): Relatively cool, moist and showery
conditions will be in place today as a low pressure system continues to
move through the region. Isolated thunderstorms this afternoon will be
capable of locally very heavy rainfall rates. A warming and drying
trend begins Friday into the weekend as high pressure builds.

Southwest MT (Zones 109, 110 and 111): Relatively cool, moist and showery
conditions will be in place today as a low pressure system continues to
move through the region. Isolated to scattered thunderstorms this
afternoon will be capable of locally very heavy rainfall rates. A
warming and drying trend begins Friday into the weekend as high pressure
builds.

View Weather Briefing videos on our YouTube channel
at https://www.youtube.com/NWSMissoula

IDZ102-103-291000-
Palouse/Hells Canyon-Clearwater/Nez Perce-
251 AM PDT Thu Aug 28 2025

.TODAY...
* Sky/Weather.........Mostly cloudy. Patchy fog in the morning.
  Haze in the afternoon. Chance of rain showers. Chance of
  thunderstorms in the afternoon.
* Max Temperature.....78-88 valleys and 60-70 ridges.
* Min Humidity........40-50 percent valleys and 53-63 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Calm to variable less than 7 mph.
*     Ridge Top............West 5-10 mph.
* Mixing Height.......3 kft agl until 1200. 6 kft agl after 1400.
* Transport Winds.....West 10 mph.
* Chance Lightning....30 percent in the Palouse/Hells Canyon...and
  40 percent in the Clearwater/Nez Perce.
* CWR (> 0.10 Inch)...20 percent in the Palouse/Hells Canyon...and
  40 percent in the Clearwater/Nez Perce.

.TONIGHT...
* Sky/Weather.........Partly cloudy.
* Min Temperature.....48-58.
* Max Humidity........66-76 percent.
* 20-Foot Winds.......
*     Lower Elevation......Downslope/downvalley 2-5 mph.
*     Ridge Top............West 5-10 mph becoming southwest after
      midnight.
* Mixing Height.......4 kft agl until 2000, then below 500 ft to 1
  kft agl.
* Transport Winds.....Northwest 10 mph until 2100, then variable
  less than 10 mph.
* Chance Lightning....Near 0 percent in the Palouse/Hells
  Canyon...and 20 percent in the Clearwater/Nez Perce.
* CWR (> 0.10 Inch)...0 percent.

.FRIDAY...
* Sky/Weather.........Partly cloudy. Slight chance of thunderstorms
  in the afternoon.
* Max Temperature.....85-95 valleys and 68-78 ridges.
* Min Humidity........25-35 percent valleys and 33-43 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
      the afternoon.
*     Ridge Top............West 5-10 mph.
* Mixing Height.......3 kft agl until 1100. 10 kft agl after 1400.
* Transport Winds.....Variable less than 10 mph until 1000, then
  west 10 mph until 1700, then northwest 10 mph.
* Chance Lightning....Near 0 percent in the Palouse/Hells
  Canyon...and 25 percent in the Clearwater/Nez Perce.
* CWR (> 0.10 Inch)...0 percent.

.SATURDAY...Mostly clear. Lows 55-65. Highs 80-90. Min humidities
10-20 percent. Southeast winds 5-10 mph.
.SUNDAY...Mostly clear. Lows 55-65. Highs 85-95. Min humidities
10-20 percent. East winds 5-10 mph.
.LABOR DAY...Partly cloudy. Lows 55-65. Highs 85-95. East winds
5-10 mph.
.TUESDAY...Partly cloudy. Lows 60-70. Highs 85-95.
.WEDNESDAY...Mostly clear. Lows 55-65. Highs 85-95.

$$

MTZ104-105-291000-
Kootenai-Flathead/Glacier Park-
351 AM MDT Thu Aug 28 2025

.TODAY...
* Sky/Weather.........Mostly cloudy. Chance of rain in the morning,
  then rain showers likely and slight chance of thunderstorms in
  the afternoon.
* Max Temperature.....75-85 valleys and 60-70 ridges.
* Min Humidity........39-49 percent valleys and 48-58 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Calm to variable less than 7 mph.
*     Ridge Top............Southeast 5-10 mph becoming southwest up to
      5 mph in the afternoon.
* Mixing Height.......3 kft agl until 1100. 6 kft agl after 1300.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....25 percent.
* CWR (> 0.10 Inch)...30 percent.

.TONIGHT...
* Sky/Weather.........Mostly cloudy. Chance of rain showers and
  slight chance of thunderstorms. Slight chance of rain after
  midnight.
* Min Temperature.....50-55.
* Max Humidity........96-100 percent valleys and 74-84 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Variable less than 5 mph in the evening
      becoming downslope/downvalley 1-3 mph.
*     Ridge Top............Southwest up to 5 mph.
* Mixing Height.......3 kft agl until 2000, then below 500 ft to 1
  kft agl.
* Transport Winds.....Southwest 10 mph.
* Chance Lightning....25 percent in the Kootenai...and 20 percent
  in the Flathead/Glacier Park.
* CWR (> 0.10 Inch)...20 percent.

.FRIDAY...
* Sky/Weather.........Partly cloudy. Chance of rain showers. Chance
  of thunderstorms in the afternoon.
* Max Temperature.....78-88 valleys and 60-70 ridges.
* Min Humidity........32-42 percent valleys and 56-66 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Calm to variable less than 7 mph.
*     Ridge Top............West up to 5 mph.
* Mixing Height.......3 kft agl until 1100. 6 kft agl after 1300.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....40 percent.
* CWR (> 0.10 Inch)...30 percent in the Kootenai...and 50 percent
  in the Flathead/Glacier Park.

.SATURDAY...Partly cloudy. Lows 50-60. Highs 75-85. Min humidities
15-25 percent. South winds 5-10 mph.
.SUNDAY...Mostly clear. Lows 55-65. Highs 80-90. Min humidities
10-20 percent. South winds 5-10 mph.
.LABOR DAY...Partly cloudy. Lows 55-65. Highs 85-95. Northeast winds
5-10 mph.
.TUESDAY...Partly cloudy. Lows 55-65. Highs 80-90.
.WEDNESDAY...Partly cloudy. Lows 50-60. Highs 80-90.

$$

MTZ106-108-291000-
West Lolo-East Lolo-
351 AM MDT Thu Aug 28 2025

.TODAY...
* Sky/Weather.........Cloudy. Rain in the morning, then rain
  showers and chance of thunderstorms in the afternoon.
* Max Temperature.....70-80 valleys and 58-68 ridges.
* Min Humidity........52-62 percent valleys and 65-75 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Calm to variable less than 7 mph.
*     Ridge Top............Southwest 5-10 mph.
* Mixing Height.......3 kft agl until 1300, then 4 kft agl.
* Transport Winds.....Variable less than 10 mph until 1100, then
  west 10 mph.
* Chance Lightning....30 percent.
* CWR (> 0.10 Inch)...70 percent.

.TONIGHT...
* Sky/Weather.........Mostly cloudy. Chance of rain showers and
  slight chance of thunderstorms. Slight chance of rain after
  midnight.
* Min Temperature.....45-55.
* Max Humidity........77-87 percent.
* 20-Foot Winds.......
*     Lower Elevation......Variable less than 5 mph in the evening
      becoming downslope/downvalley 1-3 mph.
*     Ridge Top............West up to 5 mph.
* Mixing Height.......1-2 kft agl until 2100, then below 500 ft to
  1 kft agl.
* Transport Winds.....West 10 mph.
* Chance Lightning....25 percent.
* CWR (> 0.10 Inch)...10 percent.

.FRIDAY...
* Sky/Weather.........Partly cloudy. Slight chance of rain in the
  morning. Slight chance of thunderstorms in the afternoon.
* Max Temperature.....75-85 valleys and 68-78 ridges.
* Min Humidity........34-44 percent valleys and 40-50 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Calm to variable less than 7 mph.
*     Ridge Top............West 5-10 mph.
* Mixing Height.......3 kft agl until 1100. 6 kft agl after 1300.
* Transport Winds.....Northwest 10 mph.
* Chance Lightning....40 percent in the West Lolo...and 30 percent
  in the East Lolo.
* CWR (> 0.10 Inch)...30 percent.

.SATURDAY...Partly cloudy. Lows 50-60. Highs 80-90. Min humidities
15-25 percent. Diurnal terrain winds to 10 mph.
.SUNDAY...Mostly clear. Lows 55-65. Highs 85-95. Min humidities
10-20 percent. Diurnal terrain winds to 10 mph.
.LABOR DAY...Partly cloudy. Lows 55-65. Highs 85-95. East winds
5-10 mph.
.TUESDAY...Partly cloudy. Lows 55-65. Highs 80-90.
.WEDNESDAY...Mostly clear. Lows 55-65. Highs 80-90.

$$

MTZ107-291000-
Flathead Reservation-
351 AM MDT Thu Aug 28 2025

.TODAY...
* Sky/Weather.........Mostly cloudy. Rain likely in the morning,
  then rain showers likely and chance of thunderstorms in the
  afternoon.
* Max Temperature.....75-80 valleys and 55-60 ridges.
* Min Humidity........58-68 percent valleys and 75-85 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Calm to variable less than 7 mph.
*     Ridge Top............South 5-10 mph becoming west up to 5 mph in
      the afternoon.
* Mixing Height.......3 kft agl until 1100, then 4 kft agl.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....30 percent.
* CWR (> 0.10 Inch)...60 percent.

.TONIGHT...
* Sky/Weather.........Mostly cloudy. Chance of rain showers and
  slight chance of thunderstorms in the evening, then slight chance
  of rain after midnight.
* Min Temperature.....55-60 valleys and 45-50 ridges.
* Max Humidity........78-88 percent.
* 20-Foot Winds.......
*     Lower Elevation......Variable less than 5 mph in the evening
      becoming downslope/downvalley 1-3 mph.
*     Ridge Top............West up to 5 mph.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....25 percent in areas west of Highway 93...and
  20 percent in the Mission Mtns and areas east of Highway 93.
* CWR (> 0.10 Inch)...20 percent.

.FRIDAY...
* Sky/Weather.........Partly cloudy. Slight chance of rain in the
  morning, then chance of rain showers and thunderstorms in the
  afternoon.
* Max Temperature.....80-85 valleys and 60-65 ridges.
* Min Humidity........40-50 percent valleys and 56-66 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
      the afternoon.
*     Ridge Top............West 5-10 mph.
* Mixing Height.......2 kft agl until 1100, then 4 kft agl until
  1300, then 6 kft agl until 1700, then 4 kft agl.
* Transport Winds.....Variable less than 10 mph until 1200, then
  north 10 mph.
* Chance Lightning....30 percent.
* CWR (> 0.10 Inch)...30 percent.

.SATURDAY...Partly cloudy. Lows 55-65. Highs 80-90. Min humidities
15-25 percent. Diurnal terrain winds to 10 mph.
.SUNDAY...Mostly clear. Lows 55-65. Highs 85-95. Min humidities
10-20 percent. East winds 5-10 mph.
.LABOR DAY...Partly cloudy. Lows 60-70. Highs 85-95. Northeast winds
5-10 mph.
.TUESDAY...Partly cloudy. Lows 60-70. Highs 85-95.
.WEDNESDAY...Mostly clear. Lows 55-65. Highs 80-90.

$$

MTZ109-291000-
Bitterroot-
351 AM MDT Thu Aug 28 2025

.TODAY...
* Sky/Weather.........Mostly cloudy. Rain in the morning. Chance of
  thunderstorms. Rain showers likely in the afternoon.
* Max Temperature.....75-80 valleys and 60-65 ridges.
* Min Humidity........50-60 percent.
* 20-Foot Winds.......
*     Lower Elevation......Calm to variable less than 7 mph.
*     Ridge Top............West 5-10 mph.
* Mixing Height.......3 kft agl until 1200, then 5 kft agl.
* Transport Winds.....Southwest 10 mph until 1500, then west 15
  mph.
* Chance Lightning....40 percent.
* CWR (> 0.10 Inch)...30 percent in the Darby, Sula, and West Fork
  Districts...and 50 percent in areas north of Hamilton.

.TONIGHT...
* Sky/Weather.........Partly cloudy. Chance of rain showers and
  slight chance of thunderstorms.
* Min Temperature.....45-55.
* Max Humidity........86-96 percent valleys and 72-82 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Northwest 5-10 mph in the evening becoming
      downslope/downvalley 2-5 mph.
*     Ridge Top............West 5-10 mph.
* Mixing Height.......4 kft agl until 2000, then 1-2 kft agl.
* Transport Winds.....West 15 mph until 2000, then variable less
  than 10 mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...0 percent.

.FRIDAY...
* Sky/Weather.........Partly cloudy. Slight chance of thunderstorms
  in the afternoon.
* Max Temperature.....80-85 valleys and 65-70 ridges.
* Min Humidity........30-40 percent.
* 20-Foot Winds.......
*     Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
      the afternoon.
*     Ridge Top............West 5-10 mph.
* Mixing Height.......2 kft agl until 1000. 8 kft agl after 1300.
* Transport Winds.....West 10 mph until 1100, then 15 mph.
* Chance Lightning....20 percent in the Darby, Sula, and West Fork
  Districts...and 25 percent in areas north of Hamilton.
* CWR (> 0.10 Inch)...10 percent.

.SATURDAY...Mostly clear. Lows 50-60. Highs 75-85. Min humidities
15-25 percent. Southwest winds 5-10 mph.
.SUNDAY...Mostly clear. Lows 50-60. Highs 80-90. Min humidities
15-25 percent. South winds 5-10 mph.
.LABOR DAY...Partly cloudy. Lows 55-65. Highs 80-90. Southeast winds
5-10 mph.
.TUESDAY...Partly cloudy. Lows 55-65. Highs 75-85.
.WEDNESDAY...Mostly clear. Lows 50-60. Highs 75-85.

$$

MTZ110-111-291000-
Deerlodge/West Beaverhead-East Beaverhead-
351 AM MDT Thu Aug 28 2025

.TODAY...
* Sky/Weather.........Mostly cloudy. Patchy fog in the morning.
  Rain showers and chance of thunderstorms.
* Max Temperature.....65-70 valleys and 55-60 ridges.
* Min Humidity........54-64 percent valleys and 60-70 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Calm to variable less than 7 mph.
*     Ridge Top............Southwest 5-10 mph.
* Mixing Height.......3 kft agl until 1100, then 5 kft agl.
* Transport Winds.....West 10 mph until 1600, then 15 mph.
* Chance Lightning....40 percent in the Deerlodge/West
  Beaverhead...and 30 percent in the East Beaverhead.
* CWR (> 0.10 Inch)...50 percent.

.TONIGHT...
* Sky/Weather.........Partly cloudy. Chance of rain showers and
  slight chance of thunderstorms.
* Min Temperature.....33-43 valleys and 40-50 ridges.
* Max Humidity........95-100 percent valleys and 77-87 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......Southwest 5-10 mph in the evening becoming
      downslope/downvalley 2-5 mph.
*     Ridge Top............West 5-10 mph.
* Mixing Height.......4 kft agl until 2000, then below 500 ft to 1
  kft agl.
* Transport Winds.....West 15 mph until 2100, then 10 mph.
* Chance Lightning....25 percent in the Deerlodge/West
  Beaverhead...and 30 percent in the East Beaverhead.
* CWR (> 0.10 Inch)...10 percent.

.FRIDAY...
* Sky/Weather.........Partly cloudy. Chance of rain showers. Slight
  chance of thunderstorms in the afternoon.
* Max Temperature.....70-75 valleys and 60-70 ridges.
* Min Humidity........30-40 percent valleys and 36-46 percent
  ridges.
* 20-Foot Winds.......
*     Lower Elevation......West 5-15 mph.
*     Ridge Top............West 5-15 mph.
* Mixing Height.......2 kft agl until 1000. 9 kft agl after 1300.
* Transport Winds.....West 10 mph until 1100, then northwest 15
  mph.
* Chance Lightning....25 percent in the Deerlodge/West
  Beaverhead...and 20 percent in the East Beaverhead.
* CWR (> 0.10 Inch)...10 percent.

.SATURDAY...Partly cloudy. Lows 45-55. Highs 70-80. Min humidities
20-30 percent. West winds 10-15 mph.
.SUNDAY...Mostly clear. Lows 45-55. Highs 75-85. Min humidities
10-20 percent. Southwest winds 5-10 mph.
.LABOR DAY...Mostly clear. Lows 50-60. Highs 75-85. Southeast winds
5-10 mph.
.TUESDAY...Partly cloudy. Lows 50-60. Highs 75-85.
.WEDNESDAY...Partly cloudy. Lows 45-55. Highs 75-85.

$$