Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Missoula, MT
Issued by NWS Missoula, MT
758
FNUS55 KMSO 241924
FWFMSO
Fire Weather Planning Forecast for Wrn Montana and N Cntrl Idaho
National Weather Service Missoula MT
124 PM MDT Sun Aug 24 2025
.DISCUSSION...
Idaho (Zones 102 and 103): Hot and dry through Monday, with poor
overnight recoveries continuing under high pressure. Heat advisories
remain in effect for low elevations with highs reaching above 100. Dense
smoke and stable conditions will delay inversion breaks in the Nez
Perce-Clearwater NF. Humidity will trend higher late Monday into the
middle of the week as monsoon moisture arrives, with increasing chances
for showers and thunderstorms capable of producing wetting rains.
Northwest MT (Zones 104 and 105): Hot and dry conditions expected
through Tuesday. Easterly winds will continue into Wednesday. Gusts will
once again increase up to 20 mph this evening across ridgetops in the
Flathead NF. Thermal belts will strengthen each night into Tuesday.
Wetting rain chances and higher humidity arrive late Wednesday into
Thursday.
West Central MT (Zones 106, 107 and 108): Hot and dry conditions are
expected through Tuesday. East winds continue through Wednesday with gusts
up to 20 mph across midslopes and ridgetops, particularly in the Lolo
NF. Thermal belts will strengthen each night into Tuesday. Humidity will
gradually trend higher late Tuesday into the middle of the week as
monsoon moisture arrives, with increasing chances for showers and
thunderstorms capable of producing wetting rains.
Southwest MT (Zones 109, 110 and 111): Warm and dry conditions through
Monday, Monday afternoon an influx of monsoon moisture could lead to
isolated storms. These storms will initially produce strong outflow
winds, up to 45 mph. Tuesday increasing moisture will allow for
increasing chances of showers. These showers will be slow moving and may
be heavy at times. Caution should be used when working or traveling
near new or recent burn scars, due to the potential for debris flows.
View Weather Briefing videos on our YouTube channel
at https://www.youtube.com/NWSMissoula
IDZ102-103-251930-
Palouse/Hells Canyon-Clearwater/Nez Perce-
1224 PM PDT Sun Aug 24 2025
.TONIGHT...
* Sky/Weather.........Partly cloudy. Areas of smoke in the evening.
Haze.
* Min Temperature.....55-65.
* Max Humidity........31-41 percent.
* 20-Foot Winds.......
* Lower Elevation......North 5-10 mph in the evening becoming
downslope/downvalley 2-5 mph.
* Ridge Top............North 5-10 mph becoming east after midnight.
* Mixing Height.......8 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....North 10 mph until 2400. Variable less than
10 mph after 0400.
* Chance Lightning....0 percent.
* CWR (> 0.10 Inch)...0 percent.
.MONDAY...
* Sky/Weather.........Partly cloudy. Haze.
* Max Temperature.....95-100 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............East 5-10 mph becoming north up to 5 mph in
the afternoon.
* Mixing Height.......2 kft agl until 1100. 10 kft agl after 1400.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.MONDAY NIGHT...
* Sky/Weather.........Mostly cloudy.
* Min Temperature.....58-68.
* Max Humidity........49-59 percent valleys and 41-51 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Variable less than 5 mph.
* Ridge Top............North 5-10 mph becoming southeast after
midnight.
* 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 in the Palouse/Hells
Canyon...and 20 percent in the Clearwater/Nez Perce.
* CWR (> 0.10 Inch)...0 percent.
.TUESDAY...
* Sky/Weather.........Partly cloudy. Slight chance of thunderstorms
in the afternoon.
* Max Temperature.....90-100 valleys and 75-85 ridges.
* Min Humidity........15-25 percent valleys and 21-31 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 up to 5
mph in the afternoon.
* Mixing Height.......3 kft agl until 1100. 10 kft agl after 1500.
* Transport Winds.....Variable less than 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.
.WEDNESDAY...Mostly cloudy with chance of rain showers and slight
chance of thunderstorms. Chance of precipitation 30 percent. Lows
60-70. Highs 80-90. Min humidities 15-25 percent. Southeast winds
5-10 mph.
.THURSDAY...Mostly cloudy with chance of rain showers and
thunderstorms. Chance of precipitation 50 percent. Lows 60-70. Highs
75-85. Min humidities 25-35 percent. South winds 5-10 mph.
.FRIDAY...Partly cloudy with slight chance of rain showers and
thunderstorms. Chance of precipitation 20 percent. Lows 55-65. Highs
80-90. Diurnal terrain winds to 10 mph.
.SATURDAY...Mostly clear. Lows 55-65. Highs 80-90.
.SUNDAY...Mostly clear. Lows 55-65.
$$
MTZ104-105-251930-
Kootenai-Flathead/Glacier Park-
124 PM MDT Sun Aug 24 2025
.TONIGHT...
* Sky/Weather.........Mostly clear.
* Min Temperature.....50-60.
* Max Humidity........61-71 percent valleys and 44-54 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Northeast 5-10 mph.
* Ridge Top............Northeast 5-15 mph becoming east after
midnight.
* Mixing Height.......8 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....Variable less than 10 mph until 2200, then
east 10 mph.
* Chance Lightning....0 percent.
* CWR (> 0.10 Inch)...0 percent.
.MONDAY...
* Sky/Weather.........Partly cloudy.
* Max Temperature.....90-100 valleys and 75-85 ridges.
* Min Humidity........12-17 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............East 5-15 mph.
* Mixing Height.......3 kft agl until 1100. 9 kft agl after 1500.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....0 percent in the Kootenai...and near 0
percent in the Flathead/Glacier Park.
* CWR (> 0.10 Inch)...0 percent.
.MONDAY NIGHT...
* Sky/Weather.........Partly cloudy.
* Min Temperature.....55-60.
* Max Humidity........48-58 percent valleys and 39-49 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......East 10-15 mph.
* Ridge Top............East 10-15 mph.
* Mixing Height.......9 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....East 10 mph.
* Chance Lightning....0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TUESDAY...
* Sky/Weather.........Partly cloudy.
* Max Temperature.....90-100 valleys and 73-83 ridges.
* Min Humidity........8-18 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............East 5-15 mph.
* Mixing Height.......3 kft agl until 1100. 11 kft agl after 1600.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.WEDNESDAY...Partly cloudy. Lows 55-65. Highs 80-90. Min humidities
10-20 percent. East winds 10-15 mph.
.THURSDAY...Mostly cloudy with slight chance of rain showers and
thunderstorms. Chance of precipitation 20 percent. Lows 55-65. Highs
75-85. Min humidities 25-35 percent. Southeast winds 5-10 mph.
.FRIDAY...Mostly cloudy with slight chance of rain showers and
thunderstorms. Chance of precipitation 20 percent. Lows 55-65. Highs
75-85. Southwest winds 5-10 mph.
.SATURDAY...Partly cloudy with slight chance of rain showers. Chance of
showers 20 percent. Lows 55-65. Highs 75-85.
.SUNDAY...Mostly clear. Lows 50-60. Highs 75-85.
$$
MTZ106-108-251930-
West Lolo-East Lolo-
124 PM MDT Sun Aug 24 2025
.TONIGHT...
* Sky/Weather.........Partly cloudy.
* Min Temperature.....50-60.
* Max Humidity........48-58 percent valleys and 42-52 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......East 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.....Northeast 10 mph until 2200, then east 10
mph.
* Chance Lightning....0 percent in the West Lolo...and near 0
percent in the East Lolo.
* CWR (> 0.10 Inch)...0 percent.
.MONDAY...
* Sky/Weather.........Partly cloudy.
* Max Temperature.....85-95 valleys and 78-88 ridges.
* Min Humidity........11-20 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to variable less than 7 mph.
* Ridge Top............East 5-10 mph.
* Mixing Height.......3 kft agl until 1100. 10 kft agl after 1500.
* Transport Winds.....East 10 mph.
* Chance Lightning....0 percent.
* CWR (> 0.10 Inch)...0 percent.
.MONDAY NIGHT...
* Sky/Weather.........Partly cloudy.
* Min Temperature.....53-63.
* Max Humidity........42-52 percent valleys and 36-46 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......East 5-10 mph.
* Ridge Top............East 10-15 mph.
* Mixing Height.......9 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.........Mostly cloudy.
* Max Temperature.....85-95 valleys and 73-83 ridges.
* Min Humidity........14-24 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to variable less than 7 mph.
* Ridge Top............East 5-10 mph.
* Mixing Height.......2 kft agl until 1100. 10 kft agl after 1400.
* Transport Winds.....East 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.WEDNESDAY...Not as warm. Mostly cloudy with slight chance of rain.
Chance of rain 20 percent. Lows 60-70. Highs 75-85. Min humidities
15-25 percent. East winds 5-10 mph.
.THURSDAY...Mostly cloudy with chance of rain showers and slight chance
of thunderstorms. Chance of precipitation 40 percent. Lows 55-65. Highs
70-80. Min humidities 35-45 percent. South winds 5-10 mph.
.FRIDAY...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.
.SATURDAY...Partly cloudy. Lows 50-60. Highs 75-85.
.SUNDAY...Mostly clear. Lows 50-60. Highs 75-85.
$$
MTZ107-251930-
Flathead Reservation-
124 PM MDT Sun Aug 24 2025
.TONIGHT...
* Sky/Weather.........Partly cloudy.
* Min Temperature.....50-60.
* Max Humidity........54-64 percent valleys and 44-54 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Northeast 5-10 mph.
* Ridge Top............Northeast 5-15 mph becoming southeast 10-20
mph after midnight.
* Mixing Height.......7 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....0 percent.
* CWR (> 0.10 Inch)...0 percent.
.MONDAY...
* Sky/Weather.........Partly cloudy.
* Max Temperature.....90-95 valleys and 70-75 ridges.
* Min Humidity........9-19 percent valleys and 16-26 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Calm to variable less than 7 mph.
* Ridge Top............Northeast 5-10 mph.
* Mixing Height.......2 kft agl until 1100. 9 kft agl after 1500.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....0 percent.
* CWR (> 0.10 Inch)...0 percent.
.MONDAY NIGHT...
* Sky/Weather.........Partly cloudy.
* Min Temperature.....55-65.
* Max Humidity........37-47 percent.
* 20-Foot Winds.......
* Lower Elevation......Northeast 10-15 mph.
* Ridge Top............East 10-20 mph.
* Mixing Height.......9 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.
* Max Temperature.....90-95 valleys and 70-75 ridges.
* Min Humidity........9-19 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 northeast 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.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.WEDNESDAY...Mostly cloudy. Lows 60-70. Highs 85-95. Min humidities
10-20 percent. Northeast winds 10-15 mph.
.THURSDAY...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. Min humidities 35-45 percent. South winds
5-10 mph.
.FRIDAY...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.
.SATURDAY...Partly cloudy. Lows 55-65. Highs 80-90.
.SUNDAY...Mostly clear. Lows 55-65. Highs 80-90.
$$
MTZ109-251930-
Bitterroot-
124 PM MDT Sun Aug 24 2025
.TONIGHT...
* Sky/Weather.........Partly cloudy. Areas of smoke in the evening.
Haze.
* Min Temperature.....50-60.
* Max Humidity........55-65 percent valleys and 41-51 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......North 5-10 mph becoming variable less than 5
mph after midnight.
* Ridge Top............North 5-10 mph becoming east after midnight.
* Mixing Height.......9 kft agl until 1900. 1-2 kft agl after 2000.
* Transport Winds.....North 10 mph until 2400, then variable less
than 10 mph.
* Chance Lightning....Near 0 percent in the Darby, Sula, and West
Fork Districts...and 0 percent in areas north of Hamilton.
* CWR (> 0.10 Inch)...0 percent.
.MONDAY...
* Sky/Weather.........Partly cloudy. Haze.
* Max Temperature.....90-95 valleys and 75-80 ridges.
* Min Humidity........15-25 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............East 5-10 mph becoming northeast up to 5 mph
in the afternoon.
* Mixing Height.......3 kft agl until 1100. 11 kft agl after 1500.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.MONDAY NIGHT...
* Sky/Weather.........Mostly cloudy. Slight chance of rain.
* Min Temperature.....55-65.
* Max Humidity........52-62 percent valleys and 44-54 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......East 5-10 mph.
* Ridge Top............North 5-10 mph becoming southeast after
midnight.
* Mixing Height.......8 kft agl until 1900. 1-2 kft agl after 2000.
* Transport Winds.....Variable less than 10 mph until 2100, then
east 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TUESDAY...
* Sky/Weather.........Mostly cloudy. Slight chance of thunderstorms
in the afternoon.
* Max Temperature.....85-90 valleys and 70-80 ridges.
* Min Humidity........23-33 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............Southeast 5-10 mph becoming northeast in the
afternoon.
* Mixing Height.......3 kft agl until 1100. 9 kft agl after 1400.
* Transport Winds.....East 10 mph.
* Chance Lightning....25 percent in the Darby, Sula, and West Fork
Districts...and near 0 percent in areas north of Hamilton.
* CWR (> 0.10 Inch)...10 percent.
.WEDNESDAY...Not as warm. Mostly cloudy with chance of rain showers and
thunderstorms. Chance of precipitation 30 percent. Lows 55-65. Highs
70-80. Min humidities 40-50 percent. East winds 5-10 mph.
.THURSDAY...Mostly cloudy with rain showers likely and chance of
thunderstorms. Chance of precipitation 60 percent. Lows 55-65. Highs
65-75. Min humidities 35-45 percent. South winds 5-10 mph.
.FRIDAY...Mostly cloudy with chance of rain showers and slight chance
of thunderstorms. Chance of precipitation 40 percent. Lows 50-60. Highs
70-80. Southwest winds 5-10 mph.
.SATURDAY...Partly cloudy with slight chance of rain showers and
thunderstorms. Chance of precipitation 20 percent. Lows 50-60. Highs
75-85.
.SUNDAY...Mostly clear. Lows 50-60. Highs 75-85.
$$
MTZ110-111-251930-
Deerlodge/West Beaverhead-East Beaverhead-
124 PM MDT Sun Aug 24 2025
.TONIGHT...
* Sky/Weather.........Partly cloudy. Haze.
* Min Temperature.....38-48 valleys and 45-55 ridges.
* Max Humidity........63-73 percent valleys and 45-55 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 2200, then northeast 10
mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.MONDAY...
* Sky/Weather.........Partly cloudy. Haze.
* Max Temperature.....80-85 valleys and 70-80 ridges.
* Min Humidity........13-23 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming northeast 10-15 mph in the
afternoon.
* Ridge Top............East 5-10 mph.
* Mixing Height.......3 kft agl until 1100. 11 kft agl after 1400.
* Transport Winds.....Variable less than 10 mph until 1300, then
north 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.MONDAY NIGHT...
* Sky/Weather.........Mostly cloudy. Haze in the evening. Slight
chance of rain showers.
* Min Temperature.....50-55.
* Max Humidity........56-66 percent valleys and 47-57 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......East 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.....East 10 mph until 0500, then variable less
than 10 mph.
* Chance Lightning....Near 0 percent in the Deerlodge/West
Beaverhead...and 15 percent in the East Beaverhead.
* CWR (> 0.10 Inch)...0 percent.
.TUESDAY...
* Sky/Weather.........Mostly cloudy. Chance of rain showers. Chance
of thunderstorms in the afternoon.
* Max Temperature.....80-85 valleys and 65-75 ridges.
* Min Humidity........23-33 percent valleys and 32-42 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Calm to variable less than 7 mph.
* Ridge Top............Southeast 5-10 mph.
* Mixing Height.......2 kft agl until 1000. 9 kft agl after 1300.
* Transport Winds.....Southeast 10 mph.
* Chance Lightning....30 percent in the Deerlodge/West
Beaverhead...and 40 percent in the East Beaverhead.
* CWR (> 0.10 Inch)...10 percent in the Deerlodge/West
Beaverhead...and 30 percent in the East Beaverhead.
.WEDNESDAY...Cooler. Mostly cloudy with chance of rain showers and
slight chance of thunderstorms. Chance of precipitation 30 percent.
Lows 50-60. Highs 65-75. Min humidities 45-55 percent. East winds
5-10 mph.
.THURSDAY...Mostly cloudy with chance of rain showers and
thunderstorms. Chance of precipitation 50 percent. Lows 50-60. Highs
65-75. Min humidities 40-50 percent. South winds 5-10 mph.
.FRIDAY...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.
.SATURDAY...Partly cloudy with slight chance of rain showers and
thunderstorms. Chance of precipitation 20 percent. Lows 45-55. Highs
70-80.
.SUNDAY...Partly cloudy with slight chance of rain showers. Chance of
showers 20 percent. Lows 45-55. Highs 75-85.
$$