Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Missoula, MT
Issued by NWS Missoula, MT
412
FNUS55 KMSO 012005
FWFMSO
Fire Weather Planning Forecast for Wrn Montana and N Cntrl Idaho
National Weather Service Missoula MT
205 PM MDT Mon Sep 1 2025
.DISCUSSION...
Idaho (Zones 102 and 103): A ridge of high pressure will maintain hot
and dry conditions through mid-week. The primary concerns will be poor
overnight RH recoveries in the thermal belts and persistent
northeasterly winds. Modest instability and moisture will be just
enough for isolated convection this afternoon from 1500-1900, and again
for Tuesday. Smoke from regional fires will continue to cause hazy
conditions. The ridge will begin weakening by the end, with widespread
showers and thunderstorms potentially returning over the weekend.
Northwest MT (Zones 104 and 105): A ridge of high pressure will maintain hot
and dry conditions through mid-week. The primary concerns will be poor
overnight RH recoveries in the thermal belts and persistent
easterly winds. Modest instability and moisture will be just enough for
isolated convection this afternoon from 1500-1900, and again for
Tuesday. Smoke from regional fires will continue to cause hazy
conditions. The ridge will begin weakening by the end of weak with
increasing easterly winds Friday. Widespread showers and thunderstorms
are possible over the weekend.
West Central MT (Zones 106, 107 and 108): A ridge of high pressure will
maintain hot and dry conditions through mid-week. The primary concerns
will be poor overnight RH recoveries in the thermal belts and
persistent easterly winds. Modest instability and moisture will remain
over the region the next couple days, though any convection development
is expected to be north of I-90. Smoke from regional fires will continue
to cause hazy conditions. The ridge will begin weakening by the end of
weak with increasing easterly winds Friday. Widespread showers and
thunderstorms are possible over the weekend.
Southwest MT (Zones 109, 110 and 111): A ridge of high pressure will
maintain hot and dry conditions through mid-week. The primary concerns
will be poor overnight RH recoveries in the thermal belts and persistent
northeasterly winds. Modest instability and moisture will remain over
the region the next couple days, though any convection development is
expected to be north of I-90. Smoke from regional fires will continue to
cause hazy conditions. The ridge will begin weakening by the end of
weak with increasing northeasterly winds Friday. Widespread showers and
thunderstorms are possible over the weekend.
IDZ102-103-022015-
Palouse/Hells Canyon-Clearwater/Nez Perce-
105 PM PDT Mon Sep 1 2025
.TONIGHT...
* Sky/Weather.........Partly cloudy. Areas of smoke after midnight.
* Min Temperature.....55-65.
* Max Humidity........44-54 percent valleys and 29-39 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Downslope/downvalley 2-5 mph.
* Ridge Top............Northeast 5-10 mph becoming southeast after
midnight.
* Mixing Height.......11 kft agl until 1900. Below 500 ft to 1 kft
agl after 2100.
* Transport Winds.....Variable less than 10 mph until 1900, then
east 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TUESDAY...
* Sky/Weather.........Partly cloudy. Areas of smoke.
* Max Temperature.....98-108 valleys and 80-90 ridges.
* Min Humidity........10-20 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.......1-2 kft agl until 1100. Greater than 12 kft
agl after 1400.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TUESDAY NIGHT...
* Sky/Weather.........Mostly clear.
* Min Temperature.....55-65.
* Max Humidity........52-62 percent valleys and 43-53 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Downslope/downvalley 2-5 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 2100.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.WEDNESDAY...
* Sky/Weather.........Mostly sunny.
* Max Temperature.....95-105 valleys and 80-90 ridges.
* Min Humidity........10-20 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 up to
5 mph in the afternoon.
* Mixing Height.......Below 500 ft to 1 kft agl until 1000. Greater
than 12 kft agl after 1500.
* Transport Winds.....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...Mostly clear. Lows 60-70. Highs 90-100. Min humidities
15-25 percent. Southeast winds 5-10 mph.
.FRIDAY...Mostly clear. Lows 60-70. Highs 85-95. Min humidities
10-20 percent. East winds 5-10 mph.
.SATURDAY...Partly cloudy with slight chance of rain. Chance of rain
20 percent. Lows 60-70. Highs 80-90. Southeast winds 5-10 mph.
.SUNDAY...Partly cloudy with slight chance of rain showers. Chance of
showers 20 percent. Lows 55-65. Highs 75-85.
.MONDAY...Partly cloudy with chance of rain. Chance of rain 30 percent.
Lows 55-65. Highs 70-80.
$$
MTZ104-105-022015-
Kootenai-Flathead/Glacier Park-
205 PM MDT Mon Sep 1 2025
.TONIGHT...
* Sky/Weather.........Partly cloudy. Slight chance of rain.
* Min Temperature.....55-60.
* Max Humidity........63-73 percent valleys and 43-53 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Northeast 5-10 mph.
* Ridge Top............East 10-15 mph.
* Mixing Height.......8 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....East 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TUESDAY...
* Sky/Weather.........Partly cloudy. Areas of smoke in the
afternoon.
* Max Temperature.....90-100 valleys and 75-85 ridges.
* Min Humidity........11-19 percent valleys and 22-32 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............East 10-15 mph becoming north 5-10 mph in
the afternoon.
* Mixing Height.......2 kft agl until 1100. 11 kft agl after 1600.
* Transport Winds.....Variable less than 10 mph until 1300, then
northwest 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TUESDAY NIGHT...
* Sky/Weather.........Partly cloudy.
* Min Temperature.....50-60.
* Max Humidity........77-87 percent valleys and 53-63 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Northeast 10-15 mph.
* Ridge Top............Northeast 10-15 mph.
* Mixing Height.......10 kft agl until 1900. Below 500 ft to 1 kft
agl after 2100.
* Transport Winds.....North 10 mph until 2100, then east 10 mph.
* Chance Lightning....0 percent in the Kootenai...and near 0
percent in the Flathead/Glacier Park.
* CWR (> 0.10 Inch)...0 percent.
.WEDNESDAY...
* Sky/Weather.........Mostly sunny.
* Max Temperature.....90-100 valleys and 75-85 ridges.
* Min Humidity........12-22 percent valleys and 22-32 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 5-10 mph in the
afternoon.
* Mixing Height.......2 kft agl until 1100. 11 kft agl after 1600.
* Transport Winds.....Variable less than 10 mph until 1100, 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.
.THURSDAY...Mostly clear. Lows 55-65. Highs 80-90. Min humidities
15-25 percent. Northeast winds 10-15 mph.
.FRIDAY...Mostly clear. Lows 50-60. Highs 80-90. Min humidities
15-25 percent. East winds 10-15 mph.
.SATURDAY...Partly cloudy. Lows 55-65. Highs 80-90. East winds
5-10 mph.
.SUNDAY...Partly cloudy with slight chance of rain. Chance of rain
20 percent. Lows 55-65. Highs 75-85.
.MONDAY...Partly cloudy with chance of rain. Chance of rain 30 percent.
Lows 55-65. Highs 70-80.
$$
MTZ106-108-022015-
West Lolo-East Lolo-
205 PM MDT Mon Sep 1 2025
.TONIGHT...
* Sky/Weather.........Partly cloudy. Areas of smoke in the evening.
Chance of rain.
* Min Temperature.....50-60.
* Max Humidity........47-57 percent valleys and 37-47 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Northeast 10-15 mph in the evening becoming
downslope/downvalley 5-10 mph.
* Ridge Top............East 5-10 mph.
* Mixing Height.......9 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.
.TUESDAY...
* Sky/Weather.........Partly cloudy.
* Max Temperature.....90-100 valleys and 83-93 ridges.
* Min Humidity........10-16 percent valleys and 13-23 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............Southeast 5-10 mph becoming north in the
afternoon.
* Mixing Height.......2 kft agl until 1100. Greater than 12 kft agl
after 1500.
* Transport Winds.....Variable less than 10 mph until 1200, then
north 10 mph until 1600, then northwest 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TUESDAY NIGHT...
* Sky/Weather.........Partly cloudy.
* Min Temperature.....50-60.
* Max Humidity........56-66 percent valleys and 44-54 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......East 5-10 mph.
* Ridge Top............East 10-15 mph.
* Mixing Height.......11 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....North 10 mph until 2100, then variable less
than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.WEDNESDAY...
* Sky/Weather.........Mostly sunny.
* Max Temperature.....90-100 valleys and 80-90 ridges.
* Min Humidity........10-19 percent valleys and 16-26 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............Southeast 10-15 mph becoming northwest 5-10
mph in the afternoon.
* Mixing Height.......2 kft agl until 1100. Greater than 12 kft agl
after 1500.
* Transport Winds.....Variable less than 10 mph until 1100, then
west 10 mph until 1600, then northwest 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.THURSDAY...Not as warm. Mostly clear. Lows 60-70. Highs 80-90. Min
humidities 10-20 percent. Northeast winds 5-10 mph.
.FRIDAY...Mostly clear. Lows 55-65. Highs 80-90. Min humidities
15-25 percent. East winds 10-15 mph.
.SATURDAY...Partly cloudy. Lows 55-65. Highs 80-90. East winds
5-10 mph.
.SUNDAY...Partly cloudy with slight chance of rain. Chance of rain
20 percent. Lows 55-65. Highs 75-85.
.MONDAY...Mostly cloudy with chance of rain. Chance of rain 30 percent.
Lows 50-60. Highs 70-80.
$$
MTZ107-022015-
Flathead Reservation-
205 PM MDT Mon Sep 1 2025
.TONIGHT...
* Sky/Weather.........Partly cloudy. Areas of smoke in the evening.
Slight chance of rain.
* Min Temperature.....55-65.
* Max Humidity........54-64 percent valleys and 37-47 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Northeast 5-10 mph.
* Ridge Top............Northeast 5-10 mph becoming southeast 5-15
mph after midnight.
* Mixing Height.......8 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....Northeast 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TUESDAY...
* Sky/Weather.........Mostly sunny.
* Max Temperature.....90-95 valleys and 70-75 ridges.
* Min Humidity........11-16 percent valleys and 23-33 percent
ridges.
* 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.......3 kft agl until 1200. 11 kft agl after 1500.
* Transport Winds.....Variable less than 10 mph until 1300, then
north 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TUESDAY NIGHT...
* Sky/Weather.........Partly cloudy.
* Min Temperature.....55-65.
* Max Humidity........63-73 percent valleys and 55-65 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Northeast 5-10 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 2000, then
northeast 10 mph.
* Chance Lightning....0 percent.
* CWR (> 0.10 Inch)...0 percent.
.WEDNESDAY...
* Sky/Weather.........Mostly sunny.
* Max Temperature.....95-100 valleys and 70-75 ridges.
* Min Humidity........11-16 percent valleys and 23-33 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 1500.
* Transport Winds.....Variable less than 10 mph until 1400, then
northwest 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.THURSDAY...Mostly clear. Lows 60-70. Highs 85-95. Min humidities
15-25 percent. Northeast winds 5-10 mph.
.FRIDAY...Mostly clear. Lows 55-65. Highs 80-90. Min humidities
15-25 percent. Northeast winds 10-15 mph.
.SATURDAY...Partly cloudy. Lows 55-65. Highs 80-90. Northeast winds
5-10 mph.
.SUNDAY...Partly cloudy with slight chance of rain. Chance of rain
20 percent. Lows 55-65. Highs 80-90.
.MONDAY...Mostly cloudy with chance of rain. Chance of rain 30 percent.
Lows 55-65. Highs 75-85.
$$
MTZ109-022015-
Bitterroot-
205 PM MDT Mon Sep 1 2025
.TONIGHT...
* Sky/Weather.........Partly cloudy. Areas of smoke.
* Min Temperature.....55-60.
* Max Humidity........57-67 percent valleys and 37-47 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Downslope/downvalley 2-5 mph.
* Ridge Top............Northeast 5-10 mph becoming southeast after
midnight.
* Mixing Height.......10 kft agl until 1900. 1-2 kft agl after
2000.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TUESDAY...
* Sky/Weather.........Partly cloudy.
* Max Temperature.....90-95 valleys and 80-85 ridges.
* Min Humidity........13-23 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. 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.
.TUESDAY NIGHT...
* Sky/Weather.........Mostly clear.
* Min Temperature.....55-60.
* Max Humidity........62-72 percent valleys and 40-50 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......North 5-10 mph in the evening becoming
downslope/downvalley 2-5 mph.
* Ridge Top............Northeast 5-10 mph becoming east after
midnight.
* Mixing Height.......10 kft agl until 1900. 1-2 kft agl after
2100.
* Transport Winds.....North 10 mph until 2300. Variable less than
10 mph after 0500.
* Chance Lightning....0 percent.
* CWR (> 0.10 Inch)...0 percent.
.WEDNESDAY...
* Sky/Weather.........Mostly sunny.
* Max Temperature.....90-95 valleys and 75-85 ridges.
* Min Humidity........14-24 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 1000. 11 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.
.THURSDAY...Mostly clear. Lows 55-65. Highs 80-90. Min humidities
10-20 percent. Southwest winds 5-10 mph.
.FRIDAY...Mostly clear. Lows 50-60. Highs 75-85. Min humidities
20-30 percent. East winds 10-15 mph.
.SATURDAY...Partly cloudy with slight chance of rain. Chance of rain
20 percent. Lows 55-65. Highs 75-85. South winds 5-10 mph.
.SUNDAY...Partly cloudy with chance of rain showers and slight chance
of thunderstorms. Chance of precipitation 40 percent. Lows 50-60. Highs
70-80.
.MONDAY...Mostly cloudy with chance of rain. Chance of rain 40 percent.
Lows 50-60. Highs 70-80.
$$
MTZ110-111-022015-
Deerlodge/West Beaverhead-East Beaverhead-
205 PM MDT Mon Sep 1 2025
.TONIGHT...
* Sky/Weather.........Partly cloudy.
* Min Temperature.....40-50 valleys and 50-55 ridges.
* Max Humidity........57-67 percent valleys and 39-49 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Northeast 5-10 mph becoming south after
midnight.
* Ridge Top............East 5-10 mph.
* Mixing Height.......10 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.
.TUESDAY...
* Sky/Weather.........Partly cloudy.
* Max Temperature.....85-90 valleys and 70-80 ridges.
* Min Humidity........9-18 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............West up to 5 mph becoming northwest 5-10 mph
in the afternoon.
* Mixing Height.......2 kft agl until 1100. Greater than 12 kft agl
after 1500.
* Transport Winds.....Variable less than 10 mph until 1000, then
northwest 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TUESDAY NIGHT...
* Sky/Weather.........Partly cloudy.
* Min Temperature.....38-48 valleys and 45-55 ridges.
* Max Humidity........62-72 percent valleys and 42-52 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.......10 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....Northeast 10 mph until 0200, 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.
.WEDNESDAY...
* Sky/Weather.........Mostly sunny.
* Max Temperature.....85-90 valleys and 70-80 ridges.
* Min Humidity........13-23 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............Southwest 5-10 mph becoming northwest 5-15
mph in the afternoon.
* Mixing Height.......1-2 kft agl until 1000. 12 kft agl after
1400.
* Transport Winds.....Northwest 10 mph until 1500, then 15 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.THURSDAY...Mostly clear. Lows 50-60. Highs 75-85. Min humidities
15-25 percent. Northwest winds 10-15 mph.
.FRIDAY...Partly cloudy. Lows 45-55. Highs 75-85. Min humidities
20-30 percent. Northeast winds 10-15 mph.
.SATURDAY...Partly cloudy with chance of rain showers and slight chance
of thunderstorms. Chance of precipitation 30 percent. Lows 50-60. Highs
70-80. Southeast winds 5-10 mph.
.SUNDAY...Partly cloudy with chance of rain showers and slight chance
of thunderstorms. Chance of precipitation 40 percent. Lows 50-60. Highs
70-80.
.MONDAY...Partly cloudy with chance of rain showers and slight chance
of thunderstorms. Chance of precipitation 40 percent. Lows 45-55. Highs
65-75.
$$