Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Missoula, MT
Issued by NWS Missoula, MT
297
FNUS55 KMSO 021917
FWFMSO
Fire Weather Planning Forecast for Wrn Montana and N Cntrl Idaho
National Weather Service Missoula MT
117 PM MDT Tue Sep 2 2025
.DISCUSSION...
Idaho (Zones 102 and 103): Hot, dry with poor overnight RH recoveries in
thermal belts into Thursday under a high pressure ridge. Virga showers
with brief gusty winds is possible this afternoon, otherwise convection
will be suppressed. Light easterly winds overnight, diurnal trends
during the daytime, increased easterly winds on Thursday/Friday.
Potential for thicker smoke to be transported into the area from Canada
by Friday. The ridge will begin to weaken by the weekend, allowing for
a return of showers and thunderstorms.
Northwest MT (Zones 104 and 105): Hot, dry with poor overnight RH recoveries
in thermal belts into Thursday under a high pressure ridge. Virga
showers with brief gusty winds is possible this afternoon, otherwise
convection will be suppressed. Light easterly winds overnight, diurnal
trends during the daytime. Slight uptick in northwest winds Wednesday
afternoon with elevated fire weather concerns given the low Rh.
Increased easterly winds on Thursday/Friday. Potential for thicker
smoke to be transported into the area from Canada on Thursday. The ridge
will begin to weaken by the weekend, allowing for a return of showers
and thunderstorms.
West Central MT (Zones 106, 107 and 108): Hot, dry with poor overnight RH
recoveries in thermal belts into Thursday under a high pressure ridge.
Virga showers with brief gusty winds is possible this afternoon,
otherwise convection will be suppressed. Light easterly winds overnight,
diurnal trends during the daytime. Slight uptick in northwest winds
Wednesday afternoon with elevated fire weather concerns given the low
Rh. Increased easterly winds on Thursday/Friday. Potential for thicker
smoke to be transported into the area from Canada on Thursday. The ridge
will begin to weaken by the weekend, allowing for a return of showers
and thunderstorms.
Southwest MT (Zones 109, 110 and 111): Hot, dry with poor overnight RH
recoveries in thermal belts into Thursday under a high pressure ridge.
Virga showers with brief gusty winds is possible this afternoon,
otherwise convection will be suppressed. Light easterly winds overnight,
diurnal trends during the daytime. Slight uptick in northwest winds
Wednesday afternoon with elevated fire weather concerns given the low
Rh. Northeast winds increase on Thursday/Friday. Potential for thicker
smoke to be transported into the area from Canada on Thursday. The ridge
will begin to weaken by the weekend, allowing for a return of showers
and thunderstorms.
IDZ102-103-031930-
Palouse/Hells Canyon-Clearwater/Nez Perce-
1217 PM PDT Tue Sep 2 2025
.TONIGHT...
* Sky/Weather.........Mostly clear. Areas of smoke.
* Min Temperature.....55-65.
* Max Humidity........44-54 percent valleys and 36-46 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......East 5-10 mph.
* Ridge Top............Northeast 5-10 mph becoming east after
midnight.
* Mixing Height.......11 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.WEDNESDAY...
* Sky/Weather.........Mostly sunny. Areas of smoke.
* Max Temperature.....95-105 valleys and 80-90 ridges.
* Min Humidity........8-17 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............Southeast 5-10 mph becoming northwest in the
afternoon.
* Mixing Height.......1-2 kft agl until 1100. 11 kft agl after
1500.
* Transport Winds.....Variable less than 10 mph until 1100, then
northwest 10 mph.
* Chance Lightning....0 percent in the Palouse/Hells Canyon...and
near 0 percent in the Clearwater/Nez Perce.
* CWR (> 0.10 Inch)...0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather.........Mostly clear. Areas of smoke.
* Min Temperature.....55-65.
* Max Humidity........42-52 percent valleys and 35-45 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Downslope/downvalley 2-5 mph.
* Ridge Top............Northwest 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.....Northwest 10 mph until 0500, then variable
less than 10 mph.
* Chance Lightning....0 percent in the Palouse/Hells Canyon...and
near 0 percent in the Clearwater/Nez Perce.
* CWR (> 0.10 Inch)...0 percent.
.THURSDAY...
* Sky/Weather.........Mostly sunny.
* Max Temperature.....95-105 valleys and 75-85 ridges.
* Min Humidity........11-21 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............South 5-10 mph becoming west 5-15 mph in the
afternoon.
* Mixing Height.......3 kft agl until 1100. Greater than 12 kft agl
after 1500.
* Transport Winds.....Variable less than 10 mph until 1100, then
northwest 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.FRIDAY...Mostly clear. Lows 55-65. Highs 85-95. Min humidities
10-20 percent. East winds 10-15 mph.
.SATURDAY...Partly cloudy with slight chance of rain. Chance of rain
20 percent. Lows 60-70. Highs 80-90. Min humidities 25-35 percent.
Southwest winds 5-10 mph.
.SUNDAY...Mostly cloudy with chance of rain showers and slight chance
of thunderstorms. Chance of precipitation 40 percent. Lows 55-65. Highs
75-85. Southwest winds 5-10 mph.
.MONDAY...Partly cloudy with chance of rain showers and slight chance
of thunderstorms. Chance of precipitation 30 percent. Lows 55-65. Highs
75-85.
.TUESDAY...Mostly cloudy with chance of rain. Chance of rain
30 percent. Lows 50-60. Highs 70-80.
$$
MTZ104-105-031930-
Kootenai-Flathead/Glacier Park-
117 PM MDT Tue Sep 2 2025
.TONIGHT...
* Sky/Weather.........Mostly clear. Areas of smoke.
* Min Temperature.....50-60.
* Max Humidity........72-82 percent valleys and 53-63 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Northeast 5-15 mph.
* Ridge Top............Northeast 5-15 mph.
* Mixing Height.......10 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....Northwest 10 mph until 2100. East 10 mph
after 0400.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.WEDNESDAY...
* Sky/Weather.........Mostly sunny. Areas of smoke.
* Max Temperature.....90-100 valleys and 75-85 ridges.
* Min Humidity........12-17 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............East 5-15 mph becoming west in the
afternoon.
* Mixing Height.......2 kft agl until 1100. 10 kft agl after 1400.
* Transport Winds.....Variable less than 10 mph until 0800, then
west 10 mph until 1300, then northwest 15 mph.
* Chance Lightning....0 percent in the Kootenai...and near 0
percent in the Flathead/Glacier Park.
* CWR (> 0.10 Inch)...0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather.........Partly cloudy. Areas of smoke.
* Min Temperature.....50-60.
* Max Humidity........62-72 percent valleys and 50-60 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Downslope/downvalley 2-5 mph.
* Ridge Top............Northwest 5-15 mph.
* Mixing Height.......9 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....Northwest 15 mph until 2100. North 10 mph
after 0300.
* Chance Lightning....0 percent in the Kootenai...and near 0
percent in the Flathead/Glacier Park.
* CWR (> 0.10 Inch)...0 percent.
.THURSDAY...
* Sky/Weather.........Partly cloudy.
* Max Temperature.....80-90 valleys and 63-73 ridges.
* Min Humidity........26-36 percent valleys and 42-52 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Northeast 5-15 mph.
* Ridge Top............Northeast 10-20 mph.
* Mixing Height.......3 kft agl until 1000. 7 kft agl after 1500.
* Transport Winds.....Northeast 15 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.FRIDAY...Mostly clear. Lows 50-60. Highs 75-85. Min humidities
15-25 percent. East winds 10-20 mph.
.SATURDAY...Mostly clear. Lows 50-60. Highs 80-90. Min humidities
15-25 percent. Southeast winds 5-10 mph.
.SUNDAY...Partly cloudy with chance of rain showers and slight chance
of thunderstorms. Chance of precipitation 30 percent. Lows 55-65. Highs
75-85. Southwest winds 5-10 mph.
.MONDAY...Partly cloudy with chance of rain. Chance of rain 30 percent.
Lows 50-60. Highs 70-80.
.TUESDAY...Mostly cloudy with chance of rain. Chance of rain
30 percent. Lows 50-60. Highs 70-80.
$$
MTZ106-108-031930-
West Lolo-East Lolo-
117 PM MDT Tue Sep 2 2025
.TONIGHT...
* Sky/Weather.........Partly cloudy. Areas of smoke.
* Min Temperature.....53-63.
* Max Humidity........53-63 percent valleys and 40-50 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......East 5-10 mph.
* Ridge Top............East 5-15 mph.
* Mixing Height.......11 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....North 10 mph until 2200. Variable less than
10 mph after 0300.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.WEDNESDAY...
* Sky/Weather.........Mostly sunny. Areas of smoke.
* Max Temperature.....90-100 valleys and 83-93 ridges.
* Min Humidity........8-18 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............Southeast 5-15 mph becoming northwest 5-15
mph in the afternoon.
* Mixing Height.......2 kft agl until 1100. 11 kft agl after 1500.
* Transport Winds.....Variable less than 10 mph until 1000, then
west 10 mph until 1300, then northwest 15 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather.........Mostly clear. Areas of smoke in the evening.
* Min Temperature.....50-60.
* Max Humidity........45-55 percent valleys and 36-46 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......West 5-10 mph.
* Ridge Top............Northwest 5-10 mph becoming southwest after
midnight.
* Mixing Height.......10 kft agl until 1900. Below 500 ft to 1 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.
.THURSDAY...
* Sky/Weather.........Mostly sunny.
* Max Temperature.....83-93 valleys and 70-80 ridges.
* Min Humidity........19-29 percent valleys and 26-36 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......East 5-15 mph.
* Ridge Top............East 10-20 mph.
* Mixing Height.......2 kft agl until 1000. 8 kft agl after 1400.
* Transport Winds.....North 10 mph until 0800, then east 15 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.FRIDAY...Mostly clear. Lows 50-60. Highs 80-90. Min humidities
10-20 percent. East winds 10-20 mph.
.SATURDAY...Mostly clear. Lows 50-60. Highs 80-90. Min humidities
15-25 percent. East winds 5-10 mph.
.SUNDAY...Mostly cloudy with chance of rain showers and slight chance
of thunderstorms. Chance of precipitation 30 percent. Lows 55-65. Highs
75-85. Southwest winds 5-10 mph.
.MONDAY...Partly cloudy with chance of rain. Chance of rain 30 percent.
Lows 50-60. Highs 70-80.
.TUESDAY...Mostly cloudy with chance of rain. Chance of rain
30 percent. Lows 50-60. Highs 70-80.
$$
MTZ107-031930-
Flathead Reservation-
117 PM MDT Tue Sep 2 2025
.TONIGHT...
* Sky/Weather.........Mostly clear. Areas of smoke.
* Min Temperature.....55-65.
* Max Humidity........58-68 percent valleys and 47-57 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Northeast 5-15 mph.
* Ridge Top............Northeast 5-15 mph becoming southeast after
midnight.
* Mixing Height.......10 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....Variable less than 10 mph until 1900, then
northeast 10 mph.
* Chance Lightning....Near 0 percent in areas west of Highway
93...and 0 percent in the Mission Mtns and areas east of Highway
93.
* CWR (> 0.10 Inch)...0 percent.
.WEDNESDAY...
* Sky/Weather.........Mostly sunny. Areas of smoke.
* Max Temperature.....95-100 valleys and 75-80 ridges.
* Min Humidity........11-16 percent valleys and 18-28 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............Southeast 5-15 mph becoming west 5-10 mph in
the afternoon.
* Mixing Height.......3 kft agl until 1200. 11 kft agl after 1600.
* Transport Winds.....Variable less than 10 mph until 1100, then
northwest 10 mph until 1500, then 15 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather.........Mostly clear. Areas of smoke.
* Min Temperature.....55-65.
* Max Humidity........42-52 percent.
* 20-Foot Winds.......
* Lower Elevation......North 5-10 mph in the evening becoming
downslope/downvalley 2-5 mph.
* Ridge Top............Northwest 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.....Northwest 15 mph until 2000, then variable
less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.THURSDAY...
* Sky/Weather.........Mostly sunny.
* Max Temperature.....85-90 valleys and 65-70 ridges.
* Min Humidity........25-35 percent valleys and 35-45 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Northeast 5-15 mph.
* Ridge Top............Southeast 5-10 mph becoming east 5-15 mph in
the afternoon.
* Mixing Height.......1-2 kft agl until 1000. 8 kft agl after 1400.
* Transport Winds.....Northeast 10 mph until 1100, then 15 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.FRIDAY...Mostly clear. Lows 50-60. Highs 80-90. Min humidities
15-25 percent. Northeast winds 10-20 mph.
.SATURDAY...Mostly clear. Lows 55-65. Highs 85-95. Min humidities
15-25 percent. East winds 5-10 mph.
.SUNDAY...Not as warm. Mostly cloudy with chance of rain showers and
slight chance of thunderstorms. Chance of precipitation 30 percent.
Lows 60-70. Highs 75-85. Southwest winds 5-10 mph.
.MONDAY...Partly cloudy with chance of rain. Chance of rain 30 percent.
Lows 55-65. Highs 75-85.
.TUESDAY...Mostly cloudy with chance of rain. Chance of rain
30 percent. Lows 55-65. Highs 75-85.
$$
MTZ109-031930-
Bitterroot-
117 PM MDT Tue Sep 2 2025
.TONIGHT...
* Sky/Weather.........Mostly clear. Areas of smoke.
* Min Temperature.....55-65.
* Max Humidity........51-61 percent valleys and 37-47 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......North 5-10 mph becoming southeast after
midnight.
* Ridge Top............Northeast 5-10 mph becoming east after
midnight.
* Mixing Height.......10 kft agl until 1900. 1-2 kft agl after
2000.
* Transport Winds.....North 10 mph until 2200. Variable less than
10 mph after 0100.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.WEDNESDAY...
* Sky/Weather.........Mostly sunny. Areas of smoke.
* Max Temperature.....90-95 valleys and 80-85 ridges.
* Min Humidity........9-19 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............Southeast 5-10 mph becoming northwest in the
afternoon.
* Mixing Height.......2 kft agl until 1100. 12 kft agl after 1400.
* Transport Winds.....Variable less than 10 mph until 1000, then
northwest 10 mph until 1700, then 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather.........Mostly clear. Areas of smoke.
* Min Temperature.....55-60.
* Max Humidity........51-61 percent valleys and 37-47 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.......10 kft agl until 1900. 1-2 kft agl after
2000.
* Transport Winds.....Northwest 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.THURSDAY...
* Sky/Weather.........Mostly sunny.
* Max Temperature.....85-90 valleys and 75-80 ridges.
* Min Humidity........17-27 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming north 10-15 mph in the
afternoon.
* Ridge Top............South 5-10 mph becoming northeast 5-15 mph
in the afternoon.
* Mixing Height.......1-2 kft agl until 1000. 11 kft agl after
1400.
* Transport Winds.....Variable less than 10 mph until 1100, then
north 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.FRIDAY...Mostly clear. Lows 50-60. Highs 75-85. Min humidities
15-25 percent. East winds 10-15 mph.
.SATURDAY...Partly cloudy with chance of rain showers and slight chance
of thunderstorms. Chance of precipitation 30 percent. Lows 55-65. Highs
75-85. Min humidities 30-40 percent. Southeast winds 5-10 mph.
.SUNDAY...Cooler. Mostly cloudy with chance of rain showers and slight
chance of thunderstorms. Chance of precipitation 40 percent. Lows
50-60. Highs 65-75. Southwest winds 5-10 mph.
.MONDAY...Partly cloudy with chance of rain showers and slight chance
of thunderstorms. Chance of precipitation 30 percent. Lows 50-60. Highs
65-75.
.TUESDAY...Mostly cloudy with chance of rain. Chance of rain
40 percent. Lows 50-60. Highs 65-75.
$$
MTZ110-111-031930-
Deerlodge/West Beaverhead-East Beaverhead-
117 PM MDT Tue Sep 2 2025
.TONIGHT...
* Sky/Weather.........Partly cloudy. Areas of smoke.
* Min Temperature.....40-50 valleys and 50-60 ridges.
* Max Humidity........56-66 percent valleys and 40-50 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Northeast 5-15 mph in the evening becoming
downslope/downvalley 2-5 mph.
* Ridge Top............Northeast 5-10 mph.
* Mixing Height.......11 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....North 10 mph until 2400, then variable less
than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.WEDNESDAY...
* Sky/Weather.........Mostly sunny. Areas of smoke.
* Max Temperature.....85-90 valleys and 75-80 ridges.
* Min Humidity........10-20 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming northwest 5-15 mph in the
afternoon.
* Ridge Top............Southwest 5-10 mph becoming northwest 5-15
mph in the afternoon.
* Mixing Height.......Below 500 ft to 1 kft agl until 1000. 12 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.
.WEDNESDAY NIGHT...
* Sky/Weather.........Mostly clear. Areas of smoke in the evening.
* Min Temperature.....43-53 valleys and 50-55 ridges.
* Max Humidity........52-62 percent valleys and 38-48 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Northwest 5-10 mph becoming southwest after
midnight.
* Ridge Top............Northwest 5-10 mph.
* Mixing Height.......10 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....Northwest 15 mph until 0100, then variable
less than 10 mph.
* Chance Lightning....Near 0 percent in the Deerlodge/West
Beaverhead...and 0 percent in the East Beaverhead.
* CWR (> 0.10 Inch)...0 percent.
.THURSDAY...
* Sky/Weather.........Mostly sunny.
* Max Temperature.....75-80 valleys and 65-75 ridges.
* Min Humidity........19-29 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming north 10-20 mph in the
afternoon.
* Ridge Top............Southwest 5-15 mph becoming northeast in the
afternoon.
* Mixing Height.......2 kft agl until 1000. 10 kft agl after 1400.
* Transport Winds.....Northwest 10 mph until 1100, then north 15
mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.FRIDAY...Mostly clear. Lows 45-55. Highs 75-85. Min humidities
15-25 percent. Northeast winds 10-20 mph.
.SATURDAY...Mostly clear. Chance of rain showers and slight chance of
thunderstorms. Chance of precipitation 30 percent. Lows 45-55. Highs
75-85. Min humidities 25-35 percent. Southeast winds 5-10 mph.
.SUNDAY...Cooler. Mostly cloudy with chance of rain showers and slight
chance of thunderstorms. Chance of precipitation 30 percent. Lows
50-60. Highs 65-75. Southwest winds 5-10 mph.
.MONDAY...Partly cloudy with chance of rain showers and slight chance
of thunderstorms. Chance of precipitation 30 percent. Lows 45-55. Highs
65-75.
.TUESDAY...Partly cloudy with chance of rain. Chance of rain
30 percent. Lows 45-55. Highs 65-75.
$$