Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Missoula, MT
Issued by NWS Missoula, MT
775
FNUS55 KMSO 300931
FWFMSO
Fire Weather Planning Forecast for Wrn Montana and N Cntrl Idaho
National Weather Service Missoula MT
331 AM MDT Sat Aug 30 2025
.DISCUSSION...
Idaho (Zones 102 and 103): High pressure will strengthen over the region
through the weekend, allowing for warmer and drier conditions to
develop. Anticipate the development of thermal belts at night with poor
RH recoveries on the midslopes and ridges. Winds will generally be
terrain driven. Smoke from regional wildfires will gradually increase.
Northwest MT (Zones 104 and 105): High pressure will strengthen over the region
through the weekend, allowing for warmer and drier conditions to
develop. Anticipate the development of thermal belts at night with poor
RH recoveries on the midslopes and ridges. Winds will generally be
terrain driven. Smoke from regional wildfires will gradually increase.
West Central MT (Zones 106, 107 and 108): High pressure will strengthen over the region
through the weekend, allowing for warmer and drier conditions to
develop. Anticipate the development of thermal belts at night with poor
RH recoveries on the midslopes and ridges. Winds will generally be
terrain driven. Smoke from regional wildfires will gradually increase.
Southwest MT (Zones 109, 110 and 111): High pressure will strengthen over the region
through the weekend, allowing for warmer and drier conditions to
develop. Anticipate the development of thermal belts at night with poor
RH recoveries on the midslopes and ridges. Winds will generally be
terrain driven. Smoke from regional wildfires will gradually increase.
IDZ102-103-310945-
Palouse/Hells Canyon-Clearwater/Nez Perce-
231 AM PDT Sat Aug 30 2025
.TODAY...
* Sky/Weather.........Partly cloudy. Haze in the afternoon.
* Max Temperature.....88-98 valleys and 70-80 ridges.
* Min Humidity........14-24 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 1100. 11 kft agl after 1400.
* Transport Winds.....Variable less than 10 mph until 1100, then
west 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TONIGHT...
* Sky/Weather.........Partly cloudy. Haze.
* Min Temperature.....53-63.
* Max Humidity........46-56 percent valleys and 32-42 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Downslope/downvalley 2-5 mph.
* Ridge Top............North 5-10 mph becoming southeast after
midnight.
* Mixing Height.......10 kft agl until 1900. Below 500 ft to 1 kft
agl after 2100.
* Transport Winds.....Variable less than 10 mph until 2000, then
southeast 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.SUNDAY...
* Sky/Weather.........Partly cloudy. Haze.
* Max Temperature.....95-105 valleys and 75-85 ridges.
* Min Humidity........11-21 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to variable less than 7 mph.
* Ridge Top............Southeast 5-10 mph.
* Mixing Height.......2 kft agl until 1100. Greater than 12 kft agl
after 1500.
* Transport Winds.....Southeast 10 mph.
* Chance Lightning....Near 0 percent in the Palouse/Hells
Canyon...and 0 percent in the Clearwater/Nez Perce.
* CWR (> 0.10 Inch)...0 percent.
.LABOR DAY...Mostly clear. 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. Min humidities
15-25 percent. East winds 5-10 mph.
.WEDNESDAY...Mostly clear. Lows 60-70. Highs 90-100. East winds
5-10 mph.
.THURSDAY...Mostly clear. Lows 60-70. Highs 85-95.
.FRIDAY...Partly cloudy. Lows 60-70. Highs 85-95.
$$
MTZ104-105-310945-
Kootenai-Flathead/Glacier Park-
331 AM MDT Sat Aug 30 2025
.TODAY...
* Sky/Weather.........Partly cloudy.
* Max Temperature.....85-90 valleys and 65-75 ridges.
* Min Humidity........17-27 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 5-15 mph.
* Mixing Height.......3 kft agl until 1100. 10 kft agl after 1500.
* Transport Winds.....Southwest 10 mph until 1400, then west 15
mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TONIGHT...
* Sky/Weather.........Partly cloudy.
* Min Temperature.....50-60.
* Max Humidity........69-79 percent valleys and 43-53 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Downslope/downvalley 1-3 mph.
* Ridge Top............Southwest 5-15 mph.
* Mixing Height.......9 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....West 15 mph until 2000, then variable less
than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.SUNDAY...
* Sky/Weather.........Partly cloudy. Haze.
* Max Temperature.....90-100 valleys and 70-80 ridges.
* Min Humidity........11-21 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............South 5-10 mph becoming west in the
afternoon.
* Mixing Height.......3 kft agl until 1100. 10 kft agl after 1400.
* Transport Winds.....Variable less than 10 mph until 1200, then
west 10 mph.
* Chance Lightning....0 percent in the Kootenai...and near 0
percent in the Flathead/Glacier Park.
* CWR (> 0.10 Inch)...0 percent.
.LABOR DAY...Mostly clear. Lows 55-65. Highs 85-95. Min humidities
10-20 percent. Northeast winds 5-10 mph.
.TUESDAY...Mostly clear. Lows 55-65. Highs 85-95. Min humidities
10-20 percent. Northeast winds 5-10 mph.
.WEDNESDAY...Mostly clear. Lows 55-65. Highs 80-90. Northeast winds
10-15 mph.
.THURSDAY...Mostly clear. Lows 55-65. Highs 80-90.
.FRIDAY...Mostly clear. Lows 55-65. Highs 80-90.
$$
MTZ106-108-310945-
West Lolo-East Lolo-
331 AM MDT Sat Aug 30 2025
.TODAY...
* Sky/Weather.........Mostly sunny.
* Max Temperature.....80-90 valleys and 73-83 ridges.
* Min Humidity........13-23 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.....West 10 mph until 1400, then 15 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TONIGHT...
* Sky/Weather.........Mostly clear. Haze after midnight.
* Min Temperature.....50-60.
* Max Humidity........51-61 percent valleys and 36-46 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Downslope/downvalley 1-3 mph.
* Ridge Top............West 5-10 mph becoming south after midnight.
* Mixing Height.......10 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....West 15 mph until 2000, then variable less
than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.SUNDAY...
* Sky/Weather.........Partly cloudy. Haze.
* Max Temperature.....85-95 valleys and 78-88 ridges.
* Min Humidity........12-22 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............South 5-10 mph becoming northwest up to 5
mph in the afternoon.
* Mixing Height.......2 kft agl until 1100. 11 kft agl after 1400.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....0 percent.
* CWR (> 0.10 Inch)...0 percent.
.LABOR DAY...Mostly clear. Lows 55-65. Highs 85-95. Min humidities
10-20 percent. East winds 5-10 mph.
.TUESDAY...Mostly clear. Lows 55-65. Highs 85-95. Min humidities
15-25 percent. East winds 5-10 mph.
.WEDNESDAY...Mostly clear. Lows 55-65. Highs 85-95. East winds
5-10 mph.
.THURSDAY...Mostly clear. Lows 55-65. Highs 85-95.
.FRIDAY...Partly cloudy. Lows 55-65. Highs 80-90.
$$
MTZ107-310945-
Flathead Reservation-
331 AM MDT Sat Aug 30 2025
.TODAY...
* Sky/Weather.........Mostly sunny. Patchy fog in the morning.
* Max Temperature.....85-90 valleys and 65-70 ridges.
* Min Humidity........17-27 percent valleys and 28-38 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Calm to variable less than 7 mph.
* Ridge Top............West 5-10 mph in the morning.
* 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.
.TONIGHT...
* Sky/Weather.........Mostly clear.
* Min Temperature.....50-60.
* Max Humidity........58-68 percent valleys and 39-49 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Southwest 5-10 mph.
* Ridge Top............West 5-10 mph becoming south 5-15 mph after
midnight.
* Mixing Height.......11 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....West 10 mph until 2200. Variable less than 10
mph after 0400.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.SUNDAY...
* Sky/Weather.........Partly cloudy. Haze in the afternoon.
* Max Temperature.....90-95 valleys and 70-75 ridges.
* Min Humidity........15-25 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............South 5-15 mph becoming northwest up to 5
mph in the afternoon.
* Mixing Height.......2 kft agl until 1100. 9 kft agl after 1400.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....0 percent.
* CWR (> 0.10 Inch)...0 percent.
.LABOR DAY...Mostly clear. Lows 55-65. Highs 90-100. Min humidities
10-20 percent. Northeast winds 5-10 mph.
.TUESDAY...Mostly clear. Lows 60-70. Highs 90-100. Min humidities
10-20 percent. Northeast winds 5-10 mph.
.WEDNESDAY...Mostly clear. Lows 60-70. Highs 85-95. Northeast winds
5-10 mph.
.THURSDAY...Mostly clear. Lows 55-65. Highs 85-95.
.FRIDAY...Partly cloudy. Lows 55-65. Highs 85-95.
$$
MTZ109-310945-
Bitterroot-
331 AM MDT Sat Aug 30 2025
.TODAY...
* Sky/Weather.........Mostly sunny. Haze and areas of smoke in the
afternoon.
* Max Temperature.....85-90 valleys and 70-75 ridges.
* Min Humidity........18-28 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.......3 kft agl until 1100. 10 kft agl after 1400.
* Transport Winds.....Variable less than 10 mph until 1100, then
northwest 15 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TONIGHT...
* Sky/Weather.........Mostly clear. Haze.
* Min Temperature.....50-55.
* Max Humidity........59-69 percent valleys and 35-45 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Northwest 5-10 mph in the evening becoming
downslope/downvalley 2-5 mph.
* Ridge Top............Northwest 5-10 mph becoming southeast after
midnight.
* Mixing Height.......8 kft agl until 1900. 1-2 kft agl after 2000.
* Transport Winds.....Northwest 10 mph until 2100. Variable less
than 10 mph after 2400.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.SUNDAY...
* Sky/Weather.........Mostly sunny. Haze.
* Max Temperature.....90-95 valleys and 75-80 ridges.
* Min Humidity........12-22 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to variable less than 7 mph.
* Ridge Top............South 5-10 mph.
* Mixing Height.......3 kft agl until 1100. 11 kft agl after 1500.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....0 percent.
* CWR (> 0.10 Inch)...0 percent.
.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. Min humidities
10-20 percent. East winds 5-10 mph.
.WEDNESDAY...Mostly clear. Lows 55-65. Highs 80-90. East winds
5-10 mph.
.THURSDAY...Mostly clear. Lows 55-65. Highs 80-90.
.FRIDAY...Partly cloudy. Lows 55-65. Highs 75-85.
$$
MTZ110-111-310945-
Deerlodge/West Beaverhead-East Beaverhead-
331 AM MDT Sat Aug 30 2025
.TODAY...
* Sky/Weather.........Mostly sunny. Haze in the afternoon.
* Max Temperature.....75-80 valleys and 65-70 ridges.
* Min Humidity........17-27 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to variable less than 7 mph.
* Ridge Top............Northwest 5-15 mph.
* Mixing Height.......1-2 kft agl until 1000. 10 kft agl after
1500.
* Transport Winds.....West 10 mph until 1200, then northwest 15
mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TONIGHT...
* Sky/Weather.........Mostly clear. Areas of smoke in the evening.
Haze.
* Min Temperature.....38-48 valleys and 45-50 ridges.
* Max Humidity........61-71 percent valleys and 42-52 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Northwest 5-10 mph in the evening becoming
downslope/downvalley 2-5 mph.
* Ridge Top............Northwest 5-10 mph becoming southwest after
midnight.
* Mixing Height.......9 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....Northwest 15 mph until 2000, then variable
less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.SUNDAY...
* Sky/Weather.........Mostly sunny. Haze.
* Max Temperature.....80-85 valleys and 70-75 ridges.
* Min Humidity........14-24 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to variable less than 7 mph.
* Ridge Top............Southwest 5-10 mph.
* Mixing Height.......Below 500 ft to 1 kft agl until 1000. 10 kft
agl after 1300.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.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. Min humidities
10-20 percent. Northeast winds 5-10 mph.
.WEDNESDAY...Mostly clear. Lows 50-60. Highs 75-85. North winds
5-10 mph.
.THURSDAY...Mostly clear. Lows 50-60. Highs 75-85.
.FRIDAY...Partly cloudy. Lows 50-60. Highs 75-85.
$$