Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Missoula, MT
Issued by NWS Missoula, MT
597
FNUS55 KMSO 092121
FWFMSO
Fire Weather Planning Forecast for Wrn Montana and N Cntrl Idaho
National Weather Service Missoula MT
221 PM MST Tue Dec 9 2025
.DISCUSSION...
Idaho (Zones 102 and 103): The second installment of a Significant
Atmospheric River, potentially historic, will bring heavy rain
back to the region tonight, leading to hydrological concerns and
flood risk. Taking a quick look at the next 48 hours... Tonight`s
weather, rain and snow likely. Snow may be heavy at times after
midnight. Wednesday, rain likely. Wednesday Night, cloudy with a
50 percent chance of rain. Thursday, rain likely.
Northwest MT (Zones 104 and 105): The second installment of a
Significant Atmospheric River, potentially historic, will bring
heavy rain back to the region tonight, leading to hydrological
concerns and flood risk. Taking a quick look at the next 48 hours...
Tonight`s weather, snow likely after midnight. Wednesday, rain and
snow likely. Snow may be heavy at times. Wednesday Night, rain and
snow likely. Snow may be heavy at times. Thursday, snow likely. Rain
likely. It`ll be cooler. Snow may be heavy at times.
West Central MT (Zones 106, 107 and 108): The second installment of
a Significant Atmospheric River, potentially historic, will bring
heavy rain back to the region tonight, leading to hydrological
concerns and flood risk. Taking a quick look at the next 48 hours...
Tonight`s weather, slight chance of snow until midnight, then rain
and snow likely after midnight. Patchy dense fog after midnight.
Wednesday, rain likely. Snow likely in the day. Snow may be heavy at
times in the day. Wednesday Night, rain likely. It`ll be not as
cool. Thursday, rain likely in the day, then rain likely and a
slight chance of snow in the afternoon. Snow may be heavy at times in
the afternoon.
Southwest MT (Zones 109, 110 and 111): The second installment of a
Significant Atmospheric River, potentially historic, will bring
heavy rain back to the region tonight, leading to hydrological
concerns and flood risk. Taking a quick look at the next 48 hours...
Tonight`s weather, areas of snow until midnight, then snow likely
after midnight. Wednesday, rain likely and a slight chance of snow
in the day, then a chance of rain in the afternoon. Wednesday Night,
mostly cloudy with a 50 percent chance of rain. Thursday, mostly
cloudy with a slight chance of snow. A chance of rain.
IDZ102-103-101100-
Palouse/Hells Canyon-Clearwater/Nez Perce-
121 PM PST Tue Dec 9 2025
.TONIGHT...
* Sky/Weather.........Rain and snow. Snow level 6000 feet.
* Min Temperature.....35-45 valleys and 30-35 ridges.
* Max Humidity........89-99 percent valleys and 96-100 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Variable less than 5 mph increasing to 10-15
mph after midnight.
* Ridge Top............Southwest 10-20 mph.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....South 10 mph until 0200, then southwest 15
mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...100 percent.
.WEDNESDAY...
* Sky/Weather.........Mostly cloudy. Rain.
* Max Temperature.....50-60 valleys and 40-50 ridges.
* Min Humidity........71-81 percent valleys and 77-87 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Southwest 15-25 mph.
* Ridge Top............Southwest 20-30 mph.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....Southwest 20 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...70 percent in the Palouse/Hells Canyon...and
100 percent in the Clearwater/Nez Perce.
.WEDNESDAY NIGHT...
* Sky/Weather.........Mostly cloudy. Chance of rain.
* Min Temperature.....38-48.
* Max Humidity........81-91 percent valleys and 88-98 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Southwest 15-25 mph.
* Ridge Top............Southwest 20-30 mph.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....Southwest 20 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...30 percent in the Palouse/Hells Canyon...and
60 percent in the Clearwater/Nez Perce.
.THURSDAY...
* Sky/Weather.........Mostly cloudy. Rain.
* Max Temperature.....48-58 valleys and 40-45 ridges.
* Min Humidity........72-82 percent valleys and 86-96 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Southwest 10-20 mph.
* Ridge Top............Southwest 15-25 mph.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....Southwest 20 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...60 percent in the Palouse/Hells Canyon...and
90 percent in the Clearwater/Nez Perce.
.FRIDAY...Mostly cloudy with snow and chance of rain. Chance of
precipitation 80 percent. Lows 40-50. Highs 45-55. Min humidities
60-70 percent. Southwest winds 10-15 mph.
.SATURDAY...Mostly cloudy with chance of snow and slight chance of
rain. Chance of precipitation 30 percent. Lows 35-45. Highs 45-55. Min
humidities 55-65 percent. Southwest winds 10-15 mph.
.SUNDAY...Mostly cloudy with chance of rain and snow. Chance of
precipitation 30 percent. Lows 35-45. Highs 45-55. South winds
10-15 mph.
.MONDAY...Mostly cloudy with chance of rain and snow. Chance of
precipitation 30 percent. Lows 35-45. Highs 45-55.
.TUESDAY...Mostly cloudy with rain likely and snow. Chance of
precipitation 80 percent. Lows 35-45. Highs 40-50.
$$
MTZ104-105-101100-
Kootenai-Flathead/Glacier Park-
221 PM MST Tue Dec 9 2025
.TONIGHT...
* Sky/Weather.........Mostly cloudy.
* Min Temperature.....20-30.
* Max Humidity........97-100 percent valleys and 85-95 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Variable less than 5 mph increasing to 10-15
mph after midnight.
* Ridge Top............West 5-15 mph increasing to southwest 15-25
mph after midnight.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....Southwest 15 mph until 2300, then south 15
mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...80 percent in the Kootenai...and 60 percent
in the Flathead/Glacier Park.
.WEDNESDAY...
* Sky/Weather.........Rain and snow. Snow level 6000 feet.
* Max Temperature.....45-50 valleys and 35-45 ridges.
* Min Humidity........80-90 percent.
* 20-Foot Winds.......
* Lower Elevation......Southwest 20-30 mph.
* Ridge Top............Southwest 20-30 mph.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....Southwest 20 mph until 1100, then 25 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...100 percent.
.WEDNESDAY NIGHT...
* Sky/Weather.........Rain and snow. Snow level 6500 feet.
* Min Temperature.....33-43.
* Max Humidity........95-100 percent valleys and 86-96 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Southwest 20-30 mph.
* Ridge Top............Southwest 25-35 mph.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....Southwest 25 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...100 percent.
.THURSDAY...
* Sky/Weather.........Mostly cloudy. Rain and snow. Snow level 5500
feet.
* Max Temperature.....38-48 valleys and 35-40 ridges.
* Min Humidity........70-80 percent.
* 20-Foot Winds.......
* Lower Elevation......Southwest 5-15 mph.
* Ridge Top............West 25-35 mph decreasing to 15-25 mph in
the afternoon.
* Mixing Height.......2 kft agl.
* Transport Winds.....West 25 mph until 1600, then 15 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...80 percent in the Kootenai...and 100 percent
in the Flathead/Glacier Park.
.FRIDAY...Cloudy with snow and rain. Chance of precipitation
80 percent. Lows 30-40. Highs 35-45. Min humidities 70-80 percent. West
winds 10-15 mph.
.SATURDAY...Mostly cloudy with chance of snow and rain. Chance of
precipitation 40 percent. Lows 25-35. Highs 35-45. Min humidities
65-75 percent. Southwest winds 10-20 mph.
.SUNDAY...Mostly cloudy with chance of snow and rain. Chance of
precipitation 30 percent. Lows 30-40. Highs 35-45. Southwest winds
10-20 mph.
.MONDAY...Mostly cloudy with chance of rain and snow. Chance of
precipitation 40 percent. Lows 30-40. Highs 40-50.
.TUESDAY...Mostly cloudy with rain with snow likely. Chance of
precipitation 80 percent. Lows 30-40. Highs 35-45.
$$
MTZ106-108-101100-
West Lolo-East Lolo-
221 PM MST Tue Dec 9 2025
.TONIGHT...
* Sky/Weather.........Snow. Rain after midnight. Patchy dense fog
after midnight. Snow level 4000 feet.
* Min Temperature.....25-35.
* Max Humidity........88-98 percent.
* 20-Foot Winds.......
* Lower Elevation......Variable less than 5 mph becoming east 5-10
mph after midnight.
* Ridge Top............Southwest 5-15 mph increasing to 15-25 mph
after midnight.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....Southwest 10 mph until 2300, then south 15
mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...90 percent.
.WEDNESDAY...
* Sky/Weather.........Snow in the morning. Rain. Snow level 7500
feet.
* Max Temperature.....40-50.
* Min Humidity........77-87 percent.
* 20-Foot Winds.......
* Lower Elevation......Southwest 15-25 mph.
* Ridge Top............Southwest 20-30 mph.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....Southwest 20 mph until 1000, then west 25
mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...100 percent.
.WEDNESDAY NIGHT...
* Sky/Weather.........Mostly cloudy. Rain.
* Min Temperature.....35-45.
* Max Humidity........83-93 percent.
* 20-Foot Winds.......
* Lower Elevation......Southwest 20-30 mph.
* Ridge Top............Southwest 25-35 mph.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....Southwest 25 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...90 percent in the West Lolo...and 60 percent
in the East Lolo.
.THURSDAY...
* Sky/Weather.........Mostly cloudy. Rain. Slight chance of snow in
the afternoon. Snow level 7000 feet.
* Max Temperature.....35-45.
* Min Humidity........77-87 percent valleys and 84-94 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Southwest 15-25 mph becoming west 5-15 mph
in the afternoon.
* Ridge Top............West 25-35 mph decreasing to 15-25 mph in
the afternoon.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....West 25 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...90 percent.
.FRIDAY...Cloudy with rain and snow. Chance of precipitation
80 percent. Lows 35-45. Highs 40-50. Min humidities 65-75 percent. West
winds 10-20 mph.
.SATURDAY...Mostly cloudy with chance of rain and snow. Chance of
precipitation 40 percent. Lows 30-40. Highs 40-50. Min humidities
55-65 percent. Southwest winds 10-20 mph.
.SUNDAY...Mostly cloudy with chance of rain and snow. Chance of
precipitation 30 percent. Lows 30-40. Highs 40-50. Southwest winds
10-15 mph.
.MONDAY...Mostly cloudy with chance of rain and snow. Chance of
precipitation 30 percent. Lows 30-40. Highs 40-50.
.TUESDAY...Mostly cloudy with rain and snow likely. Chance of
precipitation 70 percent. Lows 35-45. Highs 40-50.
$$
MTZ107-101100-
Flathead Reservation-
221 PM MST Tue Dec 9 2025
.TONIGHT...
* Sky/Weather.........Snow. Rain after midnight. Snow level 3500
feet.
* Min Temperature.....30-35 valleys and 20-25 ridges.
* Max Humidity........89-99 percent.
* 20-Foot Winds.......
* Lower Elevation......South 5-15 mph.
* Ridge Top............South 10-20 mph.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....South 10 mph until 2400, then 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...70 percent.
.WEDNESDAY...
* Sky/Weather.........Snow in the morning. Rain. Snow level 7000
feet.
* Max Temperature.....50-55 valleys and 35-40 ridges.
* Min Humidity........80-90 percent valleys and 93 percent ridges.
* 20-Foot Winds.......
* Lower Elevation......Southwest 15-25 mph.
* Ridge Top............Southwest 15-25 mph.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....Southwest 20 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...90 percent.
.WEDNESDAY NIGHT...
* Sky/Weather.........Cloudy. Rain. Snow level 7500 feet.
* Min Temperature.....45-50 valleys and 30-35 ridges.
* Max Humidity........82-92 percent valleys and 100 percent ridges.
* 20-Foot Winds.......
* Lower Elevation......Southwest 20-30 mph.
* Ridge Top............Southwest 20-30 mph.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....Southwest 25 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...90 percent.
.THURSDAY...
* Sky/Weather.........Cloudy. Rain. Snow in the afternoon. Snow
level 7000 feet.
* Max Temperature.....45-50 valleys and 30-35 ridges.
* Min Humidity........74-84 percent valleys and 93 percent ridges.
* 20-Foot Winds.......
* Lower Elevation......Southwest 15-25 mph.
* Ridge Top............West 15-25 mph.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....West 20 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...90 percent.
.FRIDAY...Cloudy with rain and snow. Chance of precipitation
80 percent. Lows 35-45. Highs 45-55. Min humidities 65-75 percent.
Southwest winds 10-15 mph.
.SATURDAY...Mostly cloudy with chance of rain and snow. Chance of
precipitation 50 percent. Lows 35-45. Highs 40-50. Min humidities
60-70 percent. Southwest winds 5-15 mph.
.SUNDAY...Mostly cloudy with chance of rain and snow. Chance of
precipitation 30 percent. Lows 35-45. Highs 40-50. South winds
5-15 mph.
.MONDAY...Mostly cloudy with chance of rain and snow. Chance of
precipitation 30 percent. Lows 35-45. Highs 45-55.
.TUESDAY...Mostly cloudy with rain and snow likely. Chance of
precipitation 70 percent. Lows 35-45. Highs 40-50.
$$
MTZ109-101100-
Bitterroot-
221 PM MST Tue Dec 9 2025
.TONIGHT...
* Sky/Weather.........Snow. Rain after midnight. Snow level 5000
feet.
* Min Temperature.....25-35.
* Max Humidity........86-96 percent.
* 20-Foot Winds.......
* Lower Elevation......Variable less than 5 mph increasing to 10-15
mph after midnight.
* Ridge Top............Southwest 5-15 mph increasing to 20-30 mph
after midnight.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....Southwest 15 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...90 percent.
.WEDNESDAY...
* Sky/Weather.........Snow in the morning. Rain.
* Max Temperature.....50-55 valleys and 35-40 ridges.
* Min Humidity........71-81 percent.
* 20-Foot Winds.......
* Lower Elevation......Southwest 20-30 mph.
* Ridge Top............Southwest 20-30 mph.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....Southwest 20 mph until 1100, then 25 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...100 percent.
.WEDNESDAY NIGHT...
* Sky/Weather.........Mostly cloudy. Chance of rain and snow.
* Min Temperature.....33-43.
* Max Humidity........75-85 percent.
* 20-Foot Winds.......
* Lower Elevation......Southwest 20-30 mph.
* Ridge Top............Southwest 25-35 mph.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....Southwest 20 mph.
* Chance Lightning....0 percent.
* CWR (> 0.10 Inch)...30 percent in the Darby, Sula, and West Fork
Districts...and 50 percent in areas north of Hamilton.
.THURSDAY...
* Sky/Weather.........Mostly cloudy. Rain and slight chance of
snow.
* Max Temperature.....50-55 valleys and 35-40 ridges.
* Min Humidity........71-81 percent valleys and 77-87 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Southwest 20-30 mph.
* Ridge Top............Southwest 20-30 mph.
* Mixing Height.......1-2 kft agl until 1100, then 3 kft agl.
* Transport Winds.....West 20 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...60 percent in the Darby, Sula, and West Fork
Districts...and 80 percent in areas north of Hamilton.
.FRIDAY...Mostly cloudy with rain and snow likely. Chance of
precipitation 70 percent. Lows 35-45. Highs 40-50. Min humidities
60-70 percent. Southwest winds 15-25 mph.
.SATURDAY...Mostly cloudy with slight chance of rain and snow. Chance
of precipitation 20 percent. Lows 30-40. Highs 40-50. Min humidities
50-60 percent. Southwest winds 15-25 mph.
.SUNDAY...Partly cloudy with slight chance of rain and snow. Chance of
precipitation 20 percent. Lows 30-40. Highs 40-50. Southwest winds
5-15 mph.
.MONDAY...Mostly cloudy with slight chance of rain and snow. Chance of
precipitation 20 percent. Lows 30-40. Highs 40-50.
.TUESDAY...Mostly cloudy with snow likely and chance of rain. Chance of
precipitation 70 percent. Lows 35-45. Highs 40-50.
$$
MTZ110-111-101100-
Deerlodge/West Beaverhead-East Beaverhead-
221 PM MST Tue Dec 9 2025
.TONIGHT...
* Sky/Weather.........Mostly cloudy. Snow.
* Min Temperature.....25-30.
* Max Humidity........81-91 percent.
* 20-Foot Winds.......
* Lower Elevation......Southwest 10-20 mph.
* Ridge Top............West 5-15 mph increasing to southwest 15-25
mph after midnight.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....West 15 mph until 2200, then southwest 15
mph.
* Chance Lightning....0 percent.
* CWR (> 0.10 Inch)...80 percent in the Deerlodge/West
Beaverhead...and 30 percent in the East Beaverhead.
.WEDNESDAY...
* Sky/Weather.........Partly cloudy. Chance of rain and slight
chance of snow.
* Max Temperature.....45-55 valleys and 35-40 ridges.
* Min Humidity........60-70 percent.
* 20-Foot Winds.......
* Lower Elevation......Southwest 20-30 mph.
* Ridge Top............Southwest 20-30 mph.
* Mixing Height.......Below 500 ft to 1 kft agl until 1200, then 2
kft agl.
* Transport Winds.....West 20 mph until 1000, then 30 mph.
* Chance Lightning....0 percent in the Deerlodge/West
Beaverhead...and near 0 percent in the East Beaverhead.
* CWR (> 0.10 Inch)...80 percent in the Deerlodge/West
Beaverhead...and 10 percent in the East Beaverhead.
.WEDNESDAY NIGHT...
* Sky/Weather.........Partly cloudy. Chance of rain.
* Min Temperature.....30-40.
* Max Humidity........64-74 percent.
* 20-Foot Winds.......
* Lower Elevation......Southwest 20-30 mph.
* Ridge Top............Southwest 25-35 mph.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....Southwest 25 mph.
* Chance Lightning....0 percent in the Deerlodge/West
Beaverhead...and near 0 percent in the East Beaverhead.
* CWR (> 0.10 Inch)...0 percent.
.THURSDAY...
* Sky/Weather.........Partly cloudy. Chance of rain and slight
chance of snow. Snow level 7500 feet.
* Max Temperature.....45-55 valleys and 35-40 ridges.
* Min Humidity........57-67 percent.
* 20-Foot Winds.......
* Lower Elevation......Southwest 20-30 mph.
* Ridge Top............Southwest 20-30 mph.
* Mixing Height.......Below 500 ft to 1 kft agl until 1200, then 2
kft agl.
* Transport Winds.....West 25 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...20 percent in the Deerlodge/West
Beaverhead...and 0 percent in the East Beaverhead.
.FRIDAY...Mostly cloudy with chance of rain and snow. Chance of
precipitation 40 percent. Lows 35-45. Highs 45-55. Min humidities
45-55 percent. Southwest winds 10-20 mph.
.SATURDAY...Partly cloudy with slight chance of snow. Chance of snow
20 percent. Lows 30-40. Highs 40-50. Min humidities 40-50 percent.
Southwest winds 15-25 mph.
.SUNDAY...Partly cloudy. Lows 30-40. Highs 40-50. Southwest winds
10-20 mph.
.MONDAY...Partly cloudy. Lows 30-40. Highs 40-50.
.TUESDAY...Mostly cloudy with chance of snow and slight chance of rain.
Chance of precipitation 30 percent. Lows 30-40. Highs 40-50.
$$