Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Missoula, MT
Issued by NWS Missoula, MT
522
FNUS55 KMSO 271958
FWFMSO
Fire Weather Planning Forecast for Wrn Montana and N Cntrl Idaho
National Weather Service Missoula MT
158 PM MDT Wed Aug 27 2025
.DISCUSSION...
Idaho (Zones 102 and 103): Extensive cloud cover in place with cooler
temperatures and higher RHs. Rain showers likely and thunderstorms
possible through Thursday evening. High (60-90%) chance for wetting
rains. Lightning producers will also produce heavy rainfall intensities.
Potential for excessive rainfall/runoff under heavier showers and
storms. Direct impact from stronger outflow could reach 35 mph in
isolated locations. Chance for scattered showers and thundershowers into
Friday.
Northwest MT (Zones 104 and 105): Increasing cloud cover with slightly
cooler temperatures and higher RHs. Rain showers possible and slight
chance thunderstorms Wednesday night through Thursday. Lightning
producers will also produce heavy rainfall intensities. Direct impact
from stronger outflow could reach 35 mph in isolated locations. Chance
for scattered showers and thundershowers into Friday.
West Central MT (Zones 106, 107 and 108): Increasing/extensive cloud
cover in place with cooler temperatures and higher RHs. Rain showers
likely and thunderstorms possible through Thursday evening. Medium
(40-80%) chance for wetting rains. Lightning producers will also produce
heavy rainfall intensities. Potential for excessive rainfall/runoff
under heavier showers and storms. Direct impact from stronger outflow
could reach 35 mph in isolated locations. Chance for scattered showers
and thundershowers into Friday.
Southwest MT (Zones 109, 110 and 111): Extensive cloud cover in place
with cooler temperatures and higher RHs. Rain showers likely and
thunderstorms possible through Thursday evening. Medium-high (40-90% -
higher further south) chance for wetting rains. Lightning producers will
also produce heavy rainfall intensities. Potential for excessive
rainfall/runoff under heavier showers and storms. Direct impact from
stronger outflow could reach 35 mph in isolated locations.
IDZ102-103-282000-
Palouse/Hells Canyon-Clearwater/Nez Perce-
1258 PM PDT Wed Aug 27 2025
.TONIGHT...
* Sky/Weather.........Mostly cloudy. Areas of smoke in the evening.
Slight chance of thunderstorms in the evening. Rain showers.
* Min Temperature.....55-60 valleys and 48-58 ridges.
* Max Humidity........78-88 percent.
* 20-Foot Winds.......
* Lower Elevation......Variable less than 5 mph.
* Ridge Top............Southwest up to 5 mph.
* Mixing Height.......Below 500 ft to 1 kft agl until 0400.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....25 percent.
* CWR (> 0.10 Inch)...50 percent in the Palouse/Hells Canyon...and
80 percent in the Clearwater/Nez Perce.
.THURSDAY...
* Sky/Weather.........Mostly cloudy. Chance of rain showers. Slight
chance of thunderstorms in the afternoon.
* Max Temperature.....78-88 valleys and 60-70 ridges.
* Min Humidity........40-50 percent valleys and 54-64 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............West 5-10 mph.
* Mixing Height.......1-2 kft agl until 1000. 6 kft agl after 1500
until 1600.
* Transport Winds.....West 10 mph.
* Chance Lightning....30 percent.
* CWR (> 0.10 Inch)...20 percent in the Palouse/Hells Canyon...and
50 percent in the Clearwater/Nez Perce.
.THURSDAY NIGHT...
* Sky/Weather.........Partly cloudy. Chance of rain showers and
slight chance of thunderstorms.
* Min Temperature.....50-60.
* Max Humidity........67-77 percent.
* 20-Foot Winds.......
* Lower Elevation......Downslope/downvalley 2-5 mph.
* Ridge Top............West 5-10 mph becoming southwest after
midnight.
* Mixing Height.......6 kft agl until 1900. Below 500 ft to 1 kft
agl after 2100 until 0400.
* Transport Winds.....Northwest 10 mph until 2000, then 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.
.FRIDAY...
* Sky/Weather.........Partly cloudy. Slight chance of thunderstorms
in the afternoon.
* Max Temperature.....85-95 valleys and 65-75 ridges.
* Min Humidity........25-35 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 up to 5 mph becoming northwest
5-10 mph in the afternoon.
* Mixing Height.......1-2 kft agl until 1000. 9 kft agl after 1500
until 1600.
* Transport Winds.....Variable less than 10 mph until 1000, then
west 10 mph until 1600, then 15 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.
.SATURDAY...Mostly clear. Lows 55-65. Highs 80-90. Min humidities
10-20 percent. Diurnal terrain winds to 10 mph.
.SUNDAY...Mostly clear. Lows 55-65. Highs 85-95. Min humidities
15-25 percent. Southeast winds 5-10 mph.
.LABOR DAY...Partly cloudy with slight chance of rain showers. Chance
of showers 20 percent. Lows 55-65. Highs 85-95. East winds 5-10 mph.
.TUESDAY...Partly cloudy. Lows 55-65. Highs 85-95.
.WEDNESDAY...Mostly clear. Lows 55-65. Highs 80-90.
$$
MTZ104-105-282000-
Kootenai-Flathead/Glacier Park-
158 PM MDT Wed Aug 27 2025
.TONIGHT...
* Sky/Weather.........Mostly cloudy. Areas of smoke in the evening.
Chance of rain showers.
* Min Temperature.....50-60.
* Max Humidity........71-81 percent valleys and 50-60 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Southeast 5-10 mph.
* Ridge Top............Southeast 10-15 mph.
* Mixing Height.......9 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....Southeast 10 mph until 0200, then south 10
mph.
* Chance Lightning....Near 0 percent.
* CWR (> 0.10 Inch)...0 percent.
.THURSDAY...
* Sky/Weather.........Mostly cloudy. Chance of rain showers. Slight
chance of thunderstorms in the afternoon.
* Max Temperature.....75-80 valleys and 60-70 ridges.
* Min Humidity........37-47 percent valleys and 47-57 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Calm to variable less than 7 mph.
* Ridge Top............Southeast 5-10 mph.
* Mixing Height.......3 kft agl until 1100. 5 kft agl after 1400.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....20 percent in the Kootenai...and 25 percent
in the Flathead/Glacier Park.
* CWR (> 0.10 Inch)...30 percent.
.THURSDAY NIGHT...
* Sky/Weather.........Mostly cloudy. Slight chance of thunderstorms
in the evening. Chance of rain showers.
* Min Temperature.....50-60.
* Max Humidity........89-99 percent valleys and 73-83 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Variable less than 5 mph in the evening
becoming downslope/downvalley 1-3 mph.
* Ridge Top............Southwest up to 5 mph.
* Mixing Height.......4 kft agl until 1900, then below 500 ft to 1
kft agl.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...20 percent.
.FRIDAY...
* Sky/Weather.........Mostly cloudy. Chance of rain showers. Slight
chance of thunderstorms in the afternoon.
* Max Temperature.....80-90 valleys and 63-73 ridges.
* Min Humidity........31-41 percent valleys and 50-60 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............West 5-10 mph.
* Mixing Height.......3 kft agl until 1100. 7 kft agl after 1300.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....30 percent in the Kootenai...and 25 percent
in the Flathead/Glacier Park.
* CWR (> 0.10 Inch)...20 percent.
.SATURDAY...Partly cloudy with slight chance of rain showers. Chance of
showers 20 percent. Lows 50-60. Highs 75-85. Min humidities
20-30 percent. Southeast winds 5-10 mph.
.SUNDAY...Mostly clear. Lows 55-65. Highs 80-90. Min humidities
15-25 percent. South winds 5-10 mph.
.LABOR DAY...Partly cloudy with slight chance of rain showers. Chance
of showers 20 percent. Lows 55-65. Highs 80-90. East winds 5-10 mph.
.TUESDAY...Partly cloudy with slight chance of rain showers. Chance of
showers 20 percent. Lows 55-65. Highs 75-85.
.WEDNESDAY...Partly cloudy. Lows 50-60. Highs 75-85.
$$
MTZ106-108-282000-
West Lolo-East Lolo-
158 PM MDT Wed Aug 27 2025
.TONIGHT...
* Sky/Weather.........Mostly cloudy. Areas of smoke in the evening.
Slight chance of thunderstorms in the evening. Rain showers
likely.
* Min Temperature.....50-60.
* Max Humidity........73-83 percent.
* 20-Foot Winds.......
* Lower Elevation......Southeast 5-10 mph.
* Ridge Top............Southeast 5-10 mph.
* Mixing Height.......6 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....Southeast 15 mph until 0200, then variable
less than 10 mph.
* Chance Lightning....25 percent in the West Lolo...and 20 percent
in the East Lolo.
* CWR (> 0.10 Inch)...20 percent.
.THURSDAY...
* Sky/Weather.........Mostly cloudy. Rain showers likely. Chance of
thunderstorms in the afternoon.
* Max Temperature.....70-80 valleys and 60-70 ridges.
* Min Humidity........42-52 percent valleys and 56-66 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Calm to variable less than 7 mph.
* Ridge Top............Southwest 5-10 mph.
* Mixing Height.......3 kft agl until 1200, then 5 kft agl.
* Transport Winds.....Variable less than 10 mph until 1300, then
west 10 mph.
* Chance Lightning....30 percent.
* CWR (> 0.10 Inch)...60 percent.
.THURSDAY NIGHT...
* Sky/Weather.........Mostly cloudy. Chance of rain showers and
slight chance of thunderstorms.
* Min Temperature.....45-55.
* Max Humidity........74-84 percent.
* 20-Foot Winds.......
* Lower Elevation......Variable less than 5 mph in the evening
becoming downslope/downvalley 1-3 mph.
* Ridge Top............West up to 5 mph.
* Mixing Height.......3 kft agl until 2000, then below 500 ft to 1
kft agl.
* Transport Winds.....West 10 mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...10 percent.
.FRIDAY...
* Sky/Weather.........Partly cloudy. Chance of rain showers. Slight
chance of thunderstorms in the afternoon.
* Max Temperature.....75-85 valleys and 68-78 ridges.
* Min Humidity........29-39 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............West 5-10 mph.
* Mixing Height.......1-2 kft agl until 1000. 8 kft agl after 1400.
* Transport Winds.....West 10 mph.
* Chance Lightning....30 percent in the West Lolo...and 25 percent
in the East Lolo.
* CWR (> 0.10 Inch)...20 percent.
.SATURDAY...Partly cloudy. Lows 50-60. Highs 80-90. Min humidities
15-25 percent. Diurnal terrain winds to 10 mph.
.SUNDAY...Mostly clear. Lows 55-65. Highs 80-90. Min humidities
10-20 percent. Southeast winds 5-10 mph.
.LABOR DAY...Partly cloudy with slight chance of rain showers. Chance
of showers 20 percent. Lows 55-65. Highs 80-90. Southeast winds
5-10 mph.
.TUESDAY...Partly cloudy. Lows 55-65. Highs 75-85.
.WEDNESDAY...Partly cloudy. Lows 50-60. Highs 75-85.
$$
MTZ107-282000-
Flathead Reservation-
158 PM MDT Wed Aug 27 2025
.TONIGHT...
* Sky/Weather.........Mostly cloudy. Areas of smoke in the evening.
Slight chance of thunderstorms in the evening. Chance of rain
showers.
* Min Temperature.....60-65 valleys and 50-55 ridges.
* Max Humidity........68-78 percent valleys and 89-99 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......South 5-10 mph becoming variable less than 5
mph after midnight.
* Ridge Top............Southeast 5-15 mph.
* Mixing Height.......8 kft agl until 1900. Below 500 ft to 1 kft
agl after 2000.
* Transport Winds.....South 10 mph until 0500, then variable less
than 10 mph.
* Chance Lightning....20 percent in areas west of Highway 93...and
15 percent in the Mission Mtns and areas east of Highway 93.
* CWR (> 0.10 Inch)...0 percent in areas west of Highway 93...and
20 percent in the Mission Mtns and areas east of Highway 93.
.THURSDAY...
* Sky/Weather.........Mostly cloudy. Rain showers likely. Slight
chance of thunderstorms in the afternoon.
* Max Temperature.....75-80 valleys and 55-60 ridges.
* Min Humidity........51-61 percent valleys and 66-76 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Calm to variable less than 7 mph.
* Ridge Top............West up to 5 mph.
* Mixing Height.......2 kft agl until 1100. 5 kft agl after 1600.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....25 percent.
* CWR (> 0.10 Inch)...60 percent.
.THURSDAY NIGHT...
* Sky/Weather.........Mostly cloudy. Slight chance of thunderstorms
in the evening. Chance of rain showers.
* Min Temperature.....50-60.
* Max Humidity........75-85 percent.
* 20-Foot Winds.......
* Lower Elevation......Variable less than 5 mph in the evening
becoming downslope/downvalley 1-3 mph.
* Ridge Top............Southwest up to 5 mph.
* Mixing Height.......2 kft agl until 2000, then below 500 ft to 1
kft agl.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...20 percent.
.FRIDAY...
* Sky/Weather.........Partly cloudy. Chance of rain showers. Chance
of thunderstorms in the afternoon.
* Max Temperature.....80-85 valleys and 60-65 ridges.
* Min Humidity........39-49 percent valleys and 54-64 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in
the afternoon.
* Ridge Top............Southwest up to 5 mph becoming west 5-10 mph
in the afternoon.
* Mixing Height.......3 kft agl until 1100, then 5 kft agl until
1300, then 7 kft agl until 1700, then 5 kft agl.
* Transport Winds.....Variable less than 10 mph.
* Chance Lightning....30 percent in areas west of Highway 93...and
25 percent in the Mission Mtns and areas east of Highway 93.
* CWR (> 0.10 Inch)...20 percent.
.SATURDAY...Partly cloudy. Lows 55-65. Highs 80-90. Min humidities
15-25 percent. South winds 5-10 mph.
.SUNDAY...Mostly clear. Lows 55-65. Highs 85-95. Min humidities
10-20 percent. East winds 5-10 mph.
.LABOR DAY...Partly cloudy with slight chance of rain showers. Chance
of showers 20 percent. Lows 55-65. Highs 85-95. Northeast winds
5-10 mph.
.TUESDAY...Partly cloudy. Lows 55-65. Highs 80-90.
.WEDNESDAY...Partly cloudy. Lows 55-65. Highs 80-90.
$$
MTZ109-282000-
Bitterroot-
158 PM MDT Wed Aug 27 2025
.TONIGHT...
* Sky/Weather.........Cloudy. Slight chance of thunderstorms in the
evening. Rain showers.
* Min Temperature.....50-55.
* Max Humidity........91-100 percent valleys and 85-95 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Variable less than 5 mph.
* Ridge Top............Southeast up to 5 mph becoming south after
midnight.
* Mixing Height.......1-2 kft agl.
* Transport Winds.....Southeast 10 mph until 0100, then variable
less than 10 mph.
* Chance Lightning....30 percent in the Darby, Sula, and West Fork
Districts...and 25 percent in areas north of Hamilton.
* CWR (> 0.10 Inch)...70 percent in the Darby, Sula, and West Fork
Districts...and 40 percent in areas north of Hamilton.
.THURSDAY...
* Sky/Weather.........Mostly cloudy. Rain showers likely and chance
of thunderstorms.
* Max Temperature.....75-80 valleys and 60-65 ridges.
* Min Humidity........48-58 percent.
* 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. 6 kft agl after 1400.
* Transport Winds.....West 10 mph until 1500, then 15 mph.
* Chance Lightning....30 percent.
* CWR (> 0.10 Inch)...30 percent.
.THURSDAY NIGHT...
* Sky/Weather.........Partly cloudy. Chance of rain showers and
slight chance of thunderstorms.
* Min Temperature.....45-55.
* Max Humidity........87-97 percent valleys and 74-84 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......Northwest 5-10 mph in the evening becoming
downslope/downvalley 2-5 mph.
* Ridge Top............West 5-10 mph.
* Mixing Height.......5 kft agl until 2000, then 1-2 kft agl.
* Transport Winds.....West 15 mph until 2000, then variable less
than 10 mph.
* Chance Lightning....20 percent.
* CWR (> 0.10 Inch)...10 percent.
.FRIDAY...
* Sky/Weather.........Partly cloudy. Slight chance of thunderstorms
in the afternoon.
* Max Temperature.....80-85 valleys and 65-70 ridges.
* Min Humidity........32-42 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 1000. 10 kft agl after 1400.
* Transport Winds.....Southwest 10 mph until 1200, then west 15
mph.
* Chance Lightning....20 percent in the Darby, Sula, and West Fork
Districts...and 25 percent in areas north of Hamilton.
* CWR (> 0.10 Inch)...0 percent.
.SATURDAY...Mostly clear. Lows 50-60. Highs 75-85. Min humidities
15-25 percent. Southwest winds 5-10 mph.
.SUNDAY...Mostly clear. Lows 50-60. Highs 75-85. Min humidities
15-25 percent. South winds 5-10 mph.
.LABOR DAY...Partly cloudy with slight chance of rain showers. Chance
of showers 20 percent. Lows 55-65. Highs 75-85. South winds 5-10 mph.
.TUESDAY...Partly cloudy with slight chance of rain showers. Chance of
showers 20 percent. Lows 50-60. Highs 75-85.
.WEDNESDAY...Partly cloudy. Lows 50-60. Highs 75-85.
$$
MTZ110-111-282000-
Deerlodge/West Beaverhead-East Beaverhead-
158 PM MDT Wed Aug 27 2025
.TONIGHT...
* Sky/Weather.........Cloudy. Rain showers and slight chance of
thunderstorms.
* Min Temperature.....45-55.
* Max Humidity........100 percent valleys and 90-98 percent ridges.
* 20-Foot Winds.......
* Lower Elevation......Northeast 5-10 mph becoming variable less
than 5 mph after midnight.
* Ridge Top............East 5-10 mph becoming south after midnight.
* Mixing Height.......Below 500 ft to 1 kft agl.
* Transport Winds.....East 10 mph until 0300, then variable less
than 10 mph.
* Chance Lightning....30 percent in the Deerlodge/West
Beaverhead...and 40 percent in the East Beaverhead.
* CWR (> 0.10 Inch)...40 percent.
.THURSDAY...
* Sky/Weather.........Mostly cloudy. Rain showers and slight chance
of thunderstorms.
* Max Temperature.....65-70 valleys and 55-65 ridges.
* Min Humidity........42-52 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to becoming west 5-15 mph in the
afternoon.
* Ridge Top............West 5-15 mph.
* Mixing Height.......3 kft agl until 1100. 6 kft agl after 1400.
* Transport Winds.....West 10 mph until 1400, then 15 mph.
* Chance Lightning....40 percent in the Deerlodge/West
Beaverhead...and 25 percent in the East Beaverhead.
* CWR (> 0.10 Inch)...30 percent.
.THURSDAY NIGHT...
* Sky/Weather.........Partly cloudy. Chance of rain showers and
slight chance of thunderstorms.
* Min Temperature.....35-45 valleys and 45-50 ridges.
* Max Humidity........96-100 percent valleys and 81-91 percent
ridges.
* 20-Foot Winds.......
* Lower Elevation......West 5-10 mph in the evening becoming
downslope/downvalley 2-5 mph.
* Ridge Top............West 5-15 mph.
* Mixing Height.......4 kft agl until 2000, then below 500 ft to 1
kft agl.
* Transport Winds.....Northwest 15 mph until 2100, then variable
less than 10 mph.
* Chance Lightning....20 percent in the Deerlodge/West
Beaverhead...and 25 percent in the East Beaverhead.
* CWR (> 0.10 Inch)...10 percent.
.FRIDAY...
* Sky/Weather.........Partly cloudy. Chance of rain showers. Slight
chance of thunderstorms in the afternoon.
* Max Temperature.....70-75 valleys and 60-70 ridges.
* Min Humidity........28-38 percent.
* 20-Foot Winds.......
* Lower Elevation......Calm to variable less than 7 mph.
* Ridge Top............West 5-10 mph.
* Mixing Height.......2 kft agl until 1000. 10 kft agl after 1400.
* Transport Winds.....West 10 mph until 1200, then 15 mph.
* Chance Lightning....25 percent.
* CWR (> 0.10 Inch)...10 percent.
.SATURDAY...Mostly clear. Lows 45-55. Highs 70-80. Min humidities
15-25 percent. West winds 5-10 mph.
.SUNDAY...Mostly clear. Lows 45-55. Highs 75-85. Min humidities
15-25 percent. Southwest winds 5-10 mph.
.LABOR DAY...Partly cloudy with slight chance of rain showers. Chance
of showers 20 percent. Lows 50-60. Highs 75-85. South winds 5-10 mph.
.TUESDAY...Partly cloudy with slight chance of rain showers. Chance of
showers 20 percent. Lows 50-60. Highs 70-80.
.WEDNESDAY...Partly cloudy with slight chance of rain showers. Chance
of showers 20 percent. Lows 45-55. Highs 70-80.
$$