Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Missoula, MT
Issued by NWS Missoula, MT
449
FNUS55 KMSO 290954
FWFMSO
Fire Weather Planning Forecast for Wrn Montana and N Cntrl Idaho
National Weather Service Missoula MT
354 AM MDT Fri Aug 29 2025
.DISCUSSION...
Idaho (Zones 102 and 103): Temperatures will trend warmer today with
overall lower RHs. Most areas will be dry, but isolated showers and
thunderstorms will be possible this afternoon, mainly north of Highway
12. High pressure builds this weekend, bringing much warmer and drier
conditions with developing nighttime thermal belts.
Northwest MT (Zones 104 and 105): Scattered showers and thunderstorms
will develop this afternoon. Storms will be capable of locally very
heavy rainfall. High pressure builds this weekend, bringing much warmer and
drier conditions with developing nighttime thermal belts.
West Central MT (Zones 106, 107 and 108): Scattered showers and thunderstorms
will develop this afternoon. Storms will be capable of locally very
heavy rainfall. High pressure builds this weekend, bringing much warmer and
drier conditions with developing nighttime thermal belts.
Southwest MT (Zones 109, 110 and 111): Temperatures will trend warmer today with
overall lower RHs. Most areas will be dry, but isolated showers and
thunderstorms will be possible this afternoon, mainly for the Pintlar
and Butte districts. High pressure builds this weekend, bringing much
warmer and drier conditions with developing nighttime thermal belts.
IDZ102-103-301000-
Palouse/Hells Canyon-Clearwater/Nez Perce-
254 AM PDT Fri Aug 29 2025
.TODAY...
* Sky/Weather.........Partly cloudy. Slight chance of thunderstorms in
the afternoon, mainly north of Highway 12.
* Max Temperature.....85-95 valleys and 70-80 ridges.
* Min Humidity........22-32 percent valleys and 29-39 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. 9 kft agl after 1400.
* Transport Winds.....Variable less than 10 mph until 1200, then
west 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.
.TONIGHT...
* Sky/Weather.........Partly cloudy.
* Min Temperature.....50-60.
* Max Humidity........49-59 percent.
* 20-Foot Winds.......
* Lower Elevation......Downslope/downvalley 2-5 mph.
* Ridge Top............Northwest 5-10 mph becoming southwest after
midnight.
* Mixing Height.......8 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....Northwest 10 mph until 2200, then variable
less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.SATURDAY...
* Sky/Weather.........Mostly sunny. Haze in the afternoon.
* Max Temperature.....90-100 valleys and 70-80 ridges.
* Min Humidity........16-26 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............Southwest 5-10 mph becoming west in the
afternoon.
* Mixing Height.......3 kft agl until 1100. 12 kft agl after 1500.
* Transport Winds.....Variable less than 10 mph until 1400, then
west 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.SUNDAY...Mostly clear. Haze. Lows 55-65. Highs 85-95. Min humidities
15-25 percent. East winds 5-10 mph.
.LABOR DAY...Partly cloudy. Lows 60-70. Highs 90-100. Min humidities
15-25 percent. East winds 5-10 mph.
.TUESDAY...Mostly clear. Lows 60-70. Highs 90-100. East winds 5-10 mph.
.WEDNESDAY...Mostly clear. Lows 60-70. Highs 85-95.
.THURSDAY...Partly cloudy. Lows 55-65. Highs 85-95.
$$
MTZ104-105-301000-
Kootenai-Flathead/Glacier Park-
354 AM MDT Fri Aug 29 2025
.TODAY...
* Sky/Weather.........Partly cloudy. Areas of fog in the morning.
Chance of rain showers and thunderstorms.
* Max Temperature.....80-90 valleys and 63-73 ridges.
* Min Humidity........33-43 percent valleys and 53-63 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............Northwest 5-10 mph.
* Mixing Height.......3 kft agl until 1100. 8 kft agl after 1300.
* Transport Winds.....Variable less than 10 mph until 1200, then
northwest 10 mph.
* Chance Lightning....30 percent in the Kootenai...and 40 percent
in the Flathead/Glacier Park.
* CWR (> 0.10 Inch)...20 percent.
.TONIGHT...
* Sky/Weather.........Partly cloudy. Slight chance of rain showers
and thunderstorms.
* Min Temperature.....45-55.
* Max Humidity........94-100 percent valleys and 69-79 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Variable less than 5 mph in the evening
becoming downslope/downvalley 1-3 mph.
* Ridge Top............Northwest 5-10 mph.
* Mixing Height.......4 kft agl until 2000, then below 500 ft to 1
kft agl.
* Transport Winds.....North 10 mph until 2200, then variable less
than 10 mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...10 percent.
.SATURDAY...
* Sky/Weather.........Mostly sunny.
* Max Temperature.....85-95 valleys and 65-75 ridges.
* Min Humidity........15-25 percent valleys and 28-38 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 1600.
* Transport Winds.....Southwest 10 mph until 1200, then west 15
mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.SUNDAY...Mostly clear. Lows 55-65. Highs 80-90. Min humidities
10-20 percent. Southwest winds 5-10 mph.
.LABOR DAY...Mostly clear. Lows 55-65. Highs 85-95. Min humidities
10-20 percent. Northeast winds 5-10 mph.
.TUESDAY...Partly cloudy. Lows 55-65. Highs 80-90. Northeast winds
10-15 mph.
.WEDNESDAY...Mostly clear. Lows 50-60. Highs 80-90.
.THURSDAY...Partly cloudy. Lows 55-65. Highs 80-90.
$$
MTZ106-108-301000-
West Lolo-East Lolo-
354 AM MDT Fri Aug 29 2025
.TODAY...
* Sky/Weather.........Partly cloudy. Slight chance of rain in the
morning. Chance of thunderstorms in the afternoon.
* Max Temperature.....75-85 valleys and 68-78 ridges.
* Min Humidity........31-41 percent valleys and 37-47 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. 7 kft agl after 1300.
* Transport Winds.....West 10 mph.
* Chance Lightning....30 percent in the West Lolo...and 40 percent
in the East Lolo.
* CWR (> 0.10 Inch)...20 percent.
.TONIGHT...
* Sky/Weather.........Partly cloudy. Slight chance of rain showers
and thunderstorms.
* Min Temperature.....43-53 valleys and 50-55 ridges.
* Max Humidity........78-88 percent valleys and 68-78 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Downslope/downvalley 1-3 mph.
* Ridge Top............Northwest 5-10 mph.
* Mixing Height.......4 kft agl until 2000, then below 500 ft to 1
kft agl.
* Transport Winds.....Northwest 10 mph until 2200, then variable
less than 10 mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...10 percent.
.SATURDAY...
* Sky/Weather.........Mostly sunny.
* Max Temperature.....85-95 valleys and 73-83 ridges.
* Min Humidity........12-22 percent valleys and 20-30 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. 11 kft agl after 1500.
* Transport Winds.....Southwest 10 mph until 1200, then west 15
mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.SUNDAY...Mostly clear. Lows 55-65. Highs 85-95. Min humidities
10-20 percent. South winds 5-10 mph.
.LABOR DAY...Mostly clear. Lows 55-65. Highs 85-95. Min humidities
15-25 percent. East winds 5-10 mph.
.TUESDAY...Mostly clear. Lows 55-65. Highs 85-95. East winds 5-10 mph.
.WEDNESDAY...Mostly clear. Lows 55-65. Highs 80-90.
.THURSDAY...Partly cloudy. Lows 55-65. Highs 80-90.
$$
MTZ107-301000-
Flathead Reservation-
354 AM MDT Fri Aug 29 2025
.TODAY...
* Sky/Weather.........Partly cloudy. Areas of fog in the morning.
Chance of rain showers and thunderstorms.
* Max Temperature.....80-85 valleys and 60-65 ridges.
* Min Humidity........44-54 percent valleys and 57-67 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. 7 kft agl after 1300.
* Transport Winds.....Variable less than 10 mph until 1200, then
northwest 10 mph.
* Chance Lightning....30 percent in areas west of Highway 93...and
40 percent in the Mission Mtns and areas east of Highway 93.
* CWR (> 0.10 Inch)...20 percent.
.TONIGHT...
* Sky/Weather.........Partly cloudy. Chance of rain showers and
slight chance of thunderstorms.
* Min Temperature.....50-55.
* Max Humidity........87-97 percent valleys and 75-85 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Variable less than 5 mph in the evening
becoming downslope/downvalley 1-3 mph.
* Ridge Top............Northwest 5-10 mph.
* Mixing Height.......3 kft agl until 2000, then below 500 ft to 1
kft agl.
* Transport Winds.....North 10 mph until 2100, then variable less
than 10 mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...10 percent.
.SATURDAY...
* Sky/Weather.........Mostly sunny.
* Max Temperature.....90-95 valleys and 65-70 ridges.
* Min Humidity........16-26 percent valleys and 26-36 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. 11 kft agl after 1600.
* Transport Winds.....Variable less than 10 mph until 1200, then
west 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.SUNDAY...Mostly clear. Lows 55-65. Highs 85-95. Min humidities
10-20 percent. Southeast winds 5-10 mph.
.LABOR DAY...Mostly clear. Lows 55-65. Highs 90-100. Min humidities
10-20 percent. Northeast winds 5-10 mph.
.TUESDAY...Mostly clear. Lows 55-65. Highs 85-95. Northeast winds
5-10 mph.
.WEDNESDAY...Mostly clear. Lows 55-65. Highs 85-95.
.THURSDAY...Partly cloudy. Lows 55-65. Highs 85-95.
$$
MTZ109-301000-
Bitterroot-
354 AM MDT Fri Aug 29 2025
.TODAY...
* Sky/Weather.........Partly cloudy. Slight chance of thunderstorms
in the afternoon.
* Max Temperature.....80-85 valleys and 65-75 ridges.
* Min Humidity........27-37 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............West 5-15 mph.
* Mixing Height.......3 kft agl until 1100. 9 kft agl after 1400.
* Transport Winds.....West 10 mph until 1300, 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)...0 percent.
.TONIGHT...
* Sky/Weather.........Partly cloudy.
* Min Temperature.....43-53 valleys and 50-55 ridges.
* Max Humidity........77-87 percent valleys and 56-66 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.......7 kft agl until 1900. 1-2 kft agl after 2000.
* Transport Winds.....Northwest 15 mph until 2100, then variable
less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.SATURDAY...
* Sky/Weather.........Mostly sunny.
* Max Temperature.....85-90 valleys and 70-75 ridges.
* Min Humidity........19-29 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.......1-2 kft agl until 1000. 10 kft agl after
1400.
* Transport Winds.....Variable less than 10 mph until 1100, then
northwest 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.SUNDAY...Mostly clear. Lows 50-60. Highs 80-90. Min humidities
10-20 percent. South winds 5-10 mph.
.LABOR DAY...Mostly clear. Lows 55-65. Highs 80-90. Min humidities
10-20 percent. East winds 5-10 mph.
.TUESDAY...Mostly clear. Lows 55-65. Highs 80-90. East winds 5-10 mph.
.WEDNESDAY...Mostly clear. Lows 50-60. Highs 75-85.
.THURSDAY...Partly cloudy. Lows 50-60. Highs 75-85.
$$
MTZ110-111-301000-
Deerlodge/West Beaverhead-East Beaverhead-
354 AM MDT Fri Aug 29 2025
.TODAY...
* Sky/Weather.........Partly cloudy. Patchy fog in the morning.
Slight chance of thunderstorms in the afternoon.
* Max Temperature.....75-80 valleys and 60-70 ridges.
* Min Humidity........26-36 percent valleys and 33-43 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......West 5-15 mph.
* Ridge Top............West 5-15 mph.
* Mixing Height.......1-2 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)...0 percent.
.TONIGHT...
* Sky/Weather.........Partly cloudy. Slight chance of rain showers
and thunderstorms.
* Min Temperature.....33-43 valleys and 40-50 ridges.
* Max Humidity........86-96 percent valleys and 64-74 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Northwest 10-15 mph in the evening becoming
downslope/downvalley 5-10 mph.
* Ridge Top............Northwest 5-15 mph.
* Mixing Height.......8 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....Northwest 15 mph until 2300, then variable
less than 10 mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...0 percent.
.SATURDAY...
* Sky/Weather.........Mostly sunny.
* Max Temperature.....75-80 valleys and 65-75 ridges.
* Min Humidity........20-30 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to variable less than 7 mph.
* Ridge Top............Northwest 5-10 mph.
* Mixing Height.......1-2 kft agl until 1000. 10 kft agl after
1400.
* Transport Winds.....West 10 mph until 1200, then northwest 15
mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.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. Min humidities
10-20 percent. East winds 5-10 mph.
.TUESDAY...Mostly clear. Lows 50-60. Highs 75-85. Northeast winds
5-10 mph.
.WEDNESDAY...Mostly clear. Lows 50-60. Highs 75-85.
.THURSDAY...Partly cloudy. Lows 50-60. Highs 75-85.
$$