Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Missoula, MT
Issued by NWS Missoula, MT
816
FNUS55 KMSO 060823
FWFMSO
Fire Weather Planning Forecast for Wrn Montana and N Cntrl Idaho
National Weather Service Missoula MT
223 AM MDT Sat Sep 6 2025
.DISCUSSION...
Idaho (Zones 102 and 103): High pressure will build over the Northern
Rockies today. Expect terrain-driven winds in the lower elevations and a
shift to westerly winds towards the ridgetops. Smoky skies will persist
today and a clearing trend will begin on Sunday as the ridge moves east
and upper level flow becomes southwesterly. Increasing moisture will
bring chances for showers or thunderstorms today and on Sunday in the
late afternoon and evening. Thunderstorms will be capable of gusty
outflow winds of about 40 mph and frequent lightning. A cooler, wetter
pattern will begin on Monday night and continue through about Thursday.
Northwest MT (Zones 104 and 105): High pressure will build over the
Northern Rockies today. Expect terrain-driven winds in the lower
elevations and a shift to southwesterly winds towards the ridgetops.
Smoky skies will persist today and a clearing trend will begin on Sunday
as the ridge moves east and upper level flow becomes southwesterly.
Increasing moisture will bring chances for showers or thunderstorms on
Sunday in the late afternoon and evening. Thunderstorms will be capable
of gusty outflow winds of about 40 mph and frequent lightning. A cooler,
wetter pattern will begin on Monday night and continue through about
Thursday.
West Central MT (Zones 106, 107 and 108): High pressure will build over
the Northern Rockies today. Expect terrain-driven winds in the lower
elevations and a shift to westerly winds towards the ridgetops. Smoky
skies will persist today and a clearing trend will begin on Sunday as
the ridge moves east and upper level flow becomes southwesterly.
Increasing moisture will bring chances for showers or thunderstorms on
Sunday in the late afternoon and evening. Thunderstorms will be capable
of gusty outflow winds of about 40 mph and frequent lightning. A cooler,
wetter pattern will begin on Monday night and continue through about
Thursday.
Southwest MT (Zones 109, 110 and 111): High pressure will build over the
Northern Rockies today. Expect terrain-driven winds in the lower
elevations and a shift to westerly or southwesterly winds towards the
ridgetops. Smoky skies will persist today and a clearing trend will
begin on Sunday as the ridge moves east and upper level flow becomes
southwesterly. Increasing moisture will bring chances for showers or
thunderstorms in the late afternoon and evening today for the Bitterroot
NF, and on Sunday across the Northern Rockies. Thunderstorms will be
capable of gusty outflow winds of about 40 mph and frequent lightning. A
cooler, wetter pattern will begin on Monday night and continue through
about Thursday.
IDZ102-103-070830-
Palouse/Hells Canyon-Clearwater/Nez Perce-
123 AM PDT Sat Sep 6 2025
.TODAY...
* Sky/Weather.........Partly cloudy. Smoke in the morning, then
areas of smoke in the afternoon.
* Max Temperature.....90-100 valleys and 75-85 ridges.
* Min Humidity........18-28 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 up to 5 mph in
the afternoon.
* Mixing Height.......1-2 kft agl until 1100. 9 kft agl after 1400.
* Transport Winds.....Variable less than 10 mph until 1400, then
west 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.
.TONIGHT...
* Sky/Weather.........Mostly cloudy. Haze and patchy smoke. Chance
of rain in the evening. Slight chance of thunderstorms. Chance of
rain showers after midnight.
* Min Temperature.....55-60 valleys and 48-58 ridges.
* Max Humidity........59-69 percent.
* 20-Foot Winds.......
* Lower Elevation......Variable less than 5 mph.
* Ridge Top............Southwest 5-10 mph.
* Mixing Height.......6 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....Southwest 10 mph until 2200, then south 10
mph.
* Chance Lightning....30 percent in the Palouse/Hells Canyon...and
20 percent in the Clearwater/Nez Perce.
* CWR (> 0.10 Inch)...20 percent.
.SUNDAY...
* Sky/Weather.........Partly cloudy. Haze and patchy smoke. Chance
of rain showers. Slight chance of thunderstorms in the afternoon.
* Max Temperature.....85-95 valleys and 70-80 ridges.
* Min Humidity........27-37 percent valleys and 33-43 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............Southwest 5-10 mph.
* Mixing Height.......3 kft agl until 1100, then 5 kft agl until
1300, then 8 kft agl until 1500, then 9 kft agl until 1700, then
6 kft agl.
* Transport Winds.....Variable less than 10 mph until 1200, then
southwest 10 mph until 1500, then west 15 mph.
* Chance Lightning....20 percent in the Palouse/Hells Canyon...and
30 percent in the Clearwater/Nez Perce.
* CWR (> 0.10 Inch)...20 percent.
.MONDAY...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 20-30 percent. South winds 5-10 mph.
.TUESDAY...Cooler. Mostly cloudy with chance of rain showers and slight
chance of thunderstorms. Chance of precipitation 50 percent. Lows
50-60. Highs 65-75. Min humidities 45-55 percent. Northwest winds
5-10 mph.
.WEDNESDAY...Mostly cloudy with chance of rain showers and slight
chance of thunderstorms. Chance of precipitation 50 percent. Lows
50-60. Highs 65-75. Variable winds up to 10 mph.
.THURSDAY...Mostly cloudy with rain likely. Chance of rain 60 percent.
Lows 50-60. Highs 65-75.
.FRIDAY...Partly cloudy with chance of rain. Chance of rain 30 percent.
Lows 50-60. Highs 70-80.
$$
MTZ104-105-070830-
Kootenai-Flathead/Glacier Park-
223 AM MDT Sat Sep 6 2025
.TODAY...
* Sky/Weather.........Partly cloudy. Patchy smoke.
* Max Temperature.....85-95 valleys and 70-80 ridges.
* Min Humidity........14-24 percent valleys and 24-34 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............Southwest 5-10 mph.
* Mixing Height.......2 kft agl until 1100. 8 kft agl after 1500.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TONIGHT...
* Sky/Weather.........Partly cloudy. Areas of smoke.
* Min Temperature.....50-60.
* Max Humidity........72-82 percent valleys and 49-59 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Downslope/downvalley 1-3 mph.
* Ridge Top............Southwest 5-10 mph.
* Mixing Height.......7 kft agl until 1900. Below 500 ft to 1 kft
agl after 0400.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.SUNDAY...
* Sky/Weather.........Partly cloudy. Areas of smoke in the morning,
then patchy smoke in the afternoon. Slight chance of rain in the
morning, then slight chance of rain showers and thunderstorms in
the afternoon.
* Max Temperature.....85-90 valleys and 65-75 ridges.
* Min Humidity........25-35 percent valleys and 38-48 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............Southwest 5-10 mph.
* Mixing Height.......3 kft agl until 1100. 8 kft agl after 1500.
* Transport Winds.....Southwest 10 mph until 1300, then west 15
mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...10 percent.
.MONDAY...Partly cloudy with chance of rain showers. Chance of showers
30 percent. Lows 50-60. Highs 70-80. Min humidities 25-35 percent.
Southwest winds 5-10 mph.
.TUESDAY...Partly cloudy with chance of rain showers and slight chance
of thunderstorms. Chance of precipitation 50 percent. Lows 50-60. Highs
70-80. Min humidities 45-55 percent. West winds 5-10 mph.
.WEDNESDAY...Mostly cloudy with chance of rain showers and slight
chance of thunderstorms. Chance of precipitation 50 percent. Lows
50-60. Highs 65-75. Southwest winds 5-10 mph.
.THURSDAY...Mostly cloudy with rain showers likely. Chance of showers
60 percent. Lows 50-60. Highs 60-70.
.FRIDAY...Partly cloudy with chance of rain. Chance of rain 40 percent.
Lows 45-55. Highs 65-75.
$$
MTZ106-108-070830-
West Lolo-East Lolo-
223 AM MDT Sat Sep 6 2025
.TODAY...
* Sky/Weather.........Partly cloudy. Areas of smoke.
* Max Temperature.....85-95 valleys and 75-85 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 5-10 mph becoming west up to 5 mph in
the afternoon.
* Mixing Height.......2 kft agl until 1100. 9 kft agl after 1500.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TONIGHT...
* Sky/Weather.........Partly cloudy. Areas of smoke. Slight chance
of rain showers and thunderstorms after midnight.
* Min Temperature.....50-60.
* Max Humidity........63-73 percent valleys and 54-64 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Variable less than 5 mph.
* Ridge Top............West 5-10 mph.
* Mixing Height.......8 kft agl until 1900. Below 500 ft to 1 kft
agl after 2100.
* Transport Winds.....Variable less than 10 mph until 2300, then
southwest 10 mph.
* Chance Lightning....20 percent in the West Lolo...and near 0
percent in the East Lolo.
* CWR (> 0.10 Inch)...0 percent.
.SUNDAY...
* Sky/Weather.........Partly cloudy. Areas of smoke in the morning,
then patchy smoke in the afternoon. Slight chance of rain in the
morning, then chance of rain showers and slight chance of
thunderstorms in the afternoon.
* Max Temperature.....80-90 valleys and 73-83 ridges.
* Min Humidity........22-32 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.
* Mixing Height.......3 kft agl until 1100, then 5 kft agl until
1300, then 7 kft agl until 1400, then 10 kft agl until 1700, then
7 kft agl.
* Transport Winds.....Southwest 10 mph until 1400, then west 15
mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...20 percent.
.MONDAY...Partly cloudy with slight chance of rain. Chance of rain
20 percent. Lows 50-60. Highs 75-85. Min humidities 20-30 percent.
Southwest winds 5-10 mph.
.TUESDAY...Partly cloudy with chance of rain showers and slight chance
of thunderstorms. Chance of precipitation 30 percent. Lows 50-60. Highs
70-80. Min humidities 40-50 percent. Variable winds up to 10 mph.
.WEDNESDAY...Mostly cloudy with chance of rain showers and slight
chance of thunderstorms. Chance of precipitation 50 percent. Lows
50-60. Highs 65-75. Variable winds up to 10 mph.
.THURSDAY...Mostly cloudy with rain showers likely and slight chance of
thunderstorms. Chance of precipitation 60 percent. Lows 50-60. Highs
65-75.
.FRIDAY...Partly cloudy with chance of rain. Chance of rain 40 percent.
Lows 45-55. Highs 65-75.
$$
MTZ107-070830-
Flathead Reservation-
223 AM MDT Sat Sep 6 2025
.TODAY...
* Sky/Weather.........Partly cloudy. Patchy smoke in the morning,
then areas of smoke in the afternoon.
* Max Temperature.....85-90 valleys and 65-70 ridges.
* Min Humidity........18-28 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............South 5-15 mph becoming west up to 5 mph in
the afternoon.
* Mixing Height.......3 kft agl until 1200. 8 kft agl after 1600.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TONIGHT...
* Sky/Weather.........Partly cloudy. Areas of smoke. Slight chance
of rain after midnight.
* Min Temperature.....55-60.
* Max Humidity........52-62 percent.
* 20-Foot Winds.......
* Lower Elevation......Downslope/downvalley 2-5 mph becoming
variable less than 5 mph after midnight.
* Ridge Top............West 5-10 mph.
* Mixing Height.......7 kft agl until 1900, then below 500 ft to 1
kft agl.
* Transport Winds.....Variable less than 10 mph until 2400, then
southwest 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...10 percent.
.SUNDAY...
* Sky/Weather.........Partly cloudy. Patchy smoke. Slight chance of
rain in the morning. Chance of rain showers and slight chance of
thunderstorms in the afternoon.
* Max Temperature.....85-90 valleys and 65-70 ridges.
* Min Humidity........30-40 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. 9 kft agl after 1500.
* Transport Winds.....Southwest 10 mph until 1500, then west 15
mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...20 percent.
.MONDAY...Partly cloudy with slight chance of rain. Chance of rain
20 percent. Lows 55-65. Highs 75-85. Min humidities 25-35 percent.
Southwest winds 5-10 mph.
.TUESDAY...Partly cloudy with chance of rain showers and slight chance
of thunderstorms. Chance of precipitation 30 percent. Lows 55-65. Highs
70-80. Min humidities 45-55 percent. Variable winds up to 10 mph.
.WEDNESDAY...Mostly cloudy with chance of rain showers and slight
chance of thunderstorms. Chance of precipitation 50 percent. Lows
50-60. Highs 70-80. Variable winds up to 10 mph.
.THURSDAY...Mostly cloudy with chance of rain. Chance of rain
50 percent. Lows 50-60. Highs 65-75.
.FRIDAY...Partly cloudy with chance of rain. Chance of rain 40 percent.
Lows 50-60. Highs 70-80.
$$
MTZ109-070830-
Bitterroot-
223 AM MDT Sat Sep 6 2025
.TODAY...
* Sky/Weather.........Partly cloudy. Areas of smoke. Slight chance
of rain showers and thunderstorms in the afternoon.
* Max Temperature.....90-95 valleys and 75-80 ridges.
* Min Humidity........18-28 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 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....20 percent in the Darby, Sula, and West Fork
Districts...and near 0 percent in areas north of Hamilton.
* CWR (> 0.10 Inch)...0 percent.
.TONIGHT...
* Sky/Weather.........Partly cloudy. Areas of smoke. Chance of rain
showers and slight chance of thunderstorms in the evening. Chance
of rain after midnight.
* Min Temperature.....50-60.
* Max Humidity........80-90 percent valleys and 59-69 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......South 5-10 mph becoming southeast after
midnight.
* Ridge Top............Southwest 5-10 mph.
* Mixing Height.......7 kft agl until 1900, then 1-2 kft agl.
* Transport Winds.....Southwest 10 mph until 0200, then variable
less than 10 mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...20 percent.
.SUNDAY...
* Sky/Weather.........Partly cloudy. Patchy smoke. Slight chance of
rain in the morning. Chance of rain showers and slight chance of
thunderstorms in the afternoon.
* Max Temperature.....85-90 valleys and 70-75 ridges.
* Min Humidity........28-38 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to variable less than 7 mph.
* Ridge Top............Southwest 5-10 mph.
* Mixing Height.......1-2 kft agl until 1000, then 3 kft agl until
1100, then 5 kft agl until 1200, then 8 kft agl until 1400, then
10 kft agl until 1600, then 8 kft agl until 1700, then 5 kft agl.
* Transport Winds.....South 10 mph until 1200, then southwest 15
mph.
* Chance Lightning....30 percent in the Darby, Sula, and West Fork
Districts...and 20 percent in areas north of Hamilton.
* CWR (> 0.10 Inch)...30 percent.
.MONDAY...Partly cloudy with chance of rain. Chance of rain 30 percent.
Lows 50-60. Highs 70-80. Min humidities 15-25 percent. Southwest winds
5-10 mph.
.TUESDAY...Mostly cloudy with rain showers likely and chance of
thunderstorms. Chance of precipitation 60 percent. Lows 50-60. Highs
65-75. Min humidities 45-55 percent. South winds 5-10 mph.
.WEDNESDAY...Mostly cloudy with rain showers likely and slight chance
of thunderstorms. Chance of precipitation 60 percent. Lows 45-55. Highs
60-70. Variable winds up to 10 mph.
.THURSDAY...Mostly cloudy with rain showers likely and slight chance of
thunderstorms. Chance of precipitation 70 percent. Lows 45-55. Highs
60-70.
.FRIDAY...Partly cloudy with chance of rain. Chance of rain 30 percent.
Lows 45-55. Highs 60-70.
$$
MTZ110-111-070830-
Deerlodge/West Beaverhead-East Beaverhead-
223 AM MDT Sat Sep 6 2025
.TODAY...
* Sky/Weather.........Partly cloudy. Haze and areas of smoke.
* Max Temperature.....80-85 valleys and 70-75 ridges.
* Min Humidity........16-26 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............Southwest 5-10 mph.
* Mixing Height.......1-2 kft agl until 1100. 10 kft agl after
1500.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.TONIGHT...
* Sky/Weather.........Partly cloudy. Haze and areas of smoke.
Slight chance of rain showers and thunderstorms.
* Min Temperature.....38-48 valleys and 45-55 ridges.
* Max Humidity........78-88 percent valleys and 59-69 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Southwest 5-10 mph.
* Ridge Top............Southwest 5-10 mph.
* Mixing Height.......8 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....Southwest 10 mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...10 percent.
.SUNDAY...
* Sky/Weather.........Partly cloudy. Areas of smoke in the morning.
Haze. Chance of rain showers and thunderstorms.
* Max Temperature.....75-85 valleys and 65-75 ridges.
* Min Humidity........21-31 percent.
* 20-Foot Winds.......
* Lower Elevation......Southwest 5-15 mph.
* Ridge Top............Southwest 5-15 mph.
* Mixing Height.......1-2 kft agl until 1000, then 3 kft agl until
1100, then 5 kft agl until 1200, then 7 kft agl until 1300, then
11 kft agl until 1600, then 9 kft agl until 1700, then 6 kft agl.
* Transport Winds.....Southwest 10 mph until 1200, then west 15
mph.
* Chance Lightning....40 percent.
* CWR (> 0.10 Inch)...20 percent.
.MONDAY...Partly cloudy with slight chance of rain showers and
thunderstorms. Chance of precipitation 20 percent. Lows 45-55. Highs
70-80. Min humidities 10-20 percent. Southwest winds 10-15 mph.
.TUESDAY...Mostly cloudy with chance of rain showers and thunderstorms.
Chance of precipitation 40 percent. Lows 50-60. Highs 65-75. Min
humidities 25-35 percent. Southeast winds 10-15 mph.
.WEDNESDAY...Mostly cloudy with chance of rain showers and slight
chance of thunderstorms. Chance of precipitation 30 percent. Lows
45-55. Highs 65-75. South winds 10-15 mph.
.THURSDAY...Mostly cloudy with chance of rain showers and
thunderstorms. Chance of precipitation 40 percent. Lows 45-55. Highs
60-70.
.FRIDAY...Partly cloudy with chance of rain showers and slight chance
of thunderstorms. Chance of precipitation 30 percent. Lows 40-50. Highs
60-70.
$$