851
FNUS55 KMSO 221831
FWFMSO
FIRE WEATHER PLANNING FORECAST FOR WRN MONTANA AND N CNTRL IDAHO
NATIONAL WEATHER SERVICE MISSOULA MT
1231 PM MDT THU OCT 22 2026
DISCUSSION
IDAHO (ZONES 102 AND 103): AUTOMATED INTERIM UPDATE. A COLD FRONT
WILL PUSH THROUGH AFTER MIDNIGHT INTO FRIDAY MORNING, BRINGING
WIDESPREAD PRECIPITATION AND COLDER TEMPERATURES. TAKING A QUICK LOOK
AT THE NEXT 48 HOURS... TONIGHT'S WEATHER, RAIN SHOWERS LIKELY AND A
SLIGHT CHANCE OF THUNDERSTORMS UNTIL MIDNIGHT, THEN RAIN SHOWERS
LIKELY AFTER MIDNIGHT. FRIDAY, RAIN LIKELY IN THE MORNING, THEN A
CHANCE OF RAIN AND SNOW IN THE AFTERNOON. IT'LL BE MUCH COOLER.
FRIDAY NIGHT, PARTLY CLOUDY. SATURDAY, MOSTLY SUNNY. HUMIDITIES WILL
BE A LITTLE LOWER.
NORTHWEST MT (ZONES 104 AND 105): AUTOMATED INTERIM UPDATE. A COLD
FRONT WILL PUSH THROUGH AFTER MIDNIGHT INTO FRIDAY MORNING, BRINGING
WIDESPREAD PRECIPITATION AND COLDER TEMPERATURES. TAKING A QUICK
LOOK AT THE NEXT 48 HOURS... TONIGHT'S WEATHER, PARTLY CLOUDY WITH
AREAS OF RAIN UNTIL MIDNIGHT, THEN RAIN LIKELY AFTER MIDNIGHT.
FRIDAY, RAIN LIKELY IN THE MORNING, THEN A CHANCE OF RAIN AND SNOW IN
THE AFTERNOON. IT'LL BE MUCH COOLER. FRIDAY NIGHT, PARTLY CLOUDY. A
20 PERCENT CHANCE OF RAIN UNTIL MIDNIGHT. SATURDAY, PARTLY CLOUDY.
HUMIDITIES WILL BE A LITTLE LOWER.
WEST CENTRAL MT (ZONES 106, 107 AND 108): AUTOMATED INTERIM UPDATE. A
COLD FRONT WILL PUSH THROUGH AFTER MIDNIGHT INTO FRIDAY MORNING,
BRINGING WIDESPREAD PRECIPITATION AND COLDER TEMPERATURES. TAKING A
QUICK LOOK AT THE NEXT 48 HOURS... TONIGHT'S WEATHER, PARTLY CLOUDY
UNTIL MIDNIGHT THEN BECOMING MOSTLY CLOUDY. A 50 PERCENT CHANCE OF
AREAS OF RAIN. FRIDAY, RAIN LIKELY IN THE MORNING, THEN RAIN AND
SNOW LIKELY IN THE AFTERNOON. IT'LL BE MUCH COOLER. SNOW MAY BE HEAVY
AT TIMES IN THE AFTERNOON. FRIDAY NIGHT, MOSTLY CLOUDY WITH A
50 PERCENT CHANCE OF RAIN AND SNOW UNTIL MIDNIGHT, THEN PARTLY CLOUDY
AFTER MIDNIGHT. IT'LL BE COLDER. SATURDAY, PARTLY CLOUDY. HUMIDITIES
WILL BE A LITTLE LOWER.
SOUTHWEST MT (ZONES 109, 110 AND 111): AUTOMATED INTERIM UPDATE. A
COLD FRONT WILL PUSH THROUGH AFTER MIDNIGHT INTO FRIDAY MORNING,
BRINGING WIDESPREAD PRECIPITATION AND COLDER TEMPERATURES. TAKING A
QUICK LOOK AT THE NEXT 48 HOURS... TONIGHT'S WEATHER, MOSTLY CLOUDY
WITH A 50 PERCENT CHANCE OF AREAS OF RAIN. FRIDAY, RAIN LIKELY. SNOW
LIKELY. IT'LL BE MUCH COOLER. SNOW MAY BE HEAVY AT TIMES IN THE
MORNING. FRIDAY NIGHT, MOSTLY CLOUDY. A 50 PERCENT CHANCE OF RAIN
AND SNOW UNTIL MIDNIGHT. IT'LL BE COLDER. SATURDAY, MOSTLY SUNNY.
VIEW WEATHER BRIEFING VIDEOS ON OUR YOUTUBE CHANNEL
AT HTTPS://WWW.YOUTUBE.COM/NWSMISSOULA
IDZ102-103-231000-
PALOUSE/HELLS CANYON-CLEARWATER/NEZ PERCE-
1131 AM PDT THU OCT 22 2026
TONIGHT
* SKY/WEATHER.........SLIGHT CHANCE OF THUNDERSTORMS IN THE
EVENING. RAIN SHOWERS.
* MIN TEMPERATURE.....40-45 VALLEYS AND 30-40 RIDGES.
* MAX HUMIDITY........96-100 PERCENT VALLEYS AND 88-98 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 5-15 MPH.
* RIDGE TOP............SOUTHEAST UP TO 5 MPH INCREASING TO WEST
10-20 MPH AFTER MIDNIGHT.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....WEST 10 MPH UNTIL 0500, THEN NORTHWEST 15
MPH.
* CHANCE LIGHTNING....15 PERCENT OVER THE PALOUSE/HELLS
CANYON...AND 20 PERCENT TOWARD THE CLEARWATER/NEZ PERCE.
* CWR (> 0.10 INCH)...90 PERCENT.
FRIDAY
* SKY/WEATHER.........PARTLY CLOUDY. RAIN. CHANCE OF SNOW IN THE
AFTERNOON. SNOW LEVEL 6500 FEET.
* MAX TEMPERATURE.....48-58 VALLEYS AND 40-45 RIDGES.
* MIN HUMIDITY........51-61 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 5-15 MPH.
* RIDGE TOP............WEST 5-15 MPH.
* MIXING HEIGHT.......3 KFT AGL UNTIL 1300, THEN 4 KFT AGL.
* TRANSPORT WINDS.....WEST 15 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...10 PERCENT OVER THE PALOUSE/HELLS
CANYON...AND 80 PERCENT TOWARD THE CLEARWATER/NEZ PERCE.
FRIDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....30-35 VALLEYS AND 23-33 RIDGES.
* MAX HUMIDITY........70-80 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......VARIABLE LESS THAN 5 MPH IN THE EVENING
BECOMING DOWNSLOPE/DOWNVALLEY 2-5 MPH.
* RIDGE TOP............NORTHWEST 5-10 MPH BECOMING SOUTHEAST UP TO
5 MPH AFTER MIDNIGHT.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....WEST 10 MPH UNTIL 2300. VARIABLE LESS THAN 10
MPH AFTER 0300.
* CHANCE LIGHTNING....0 PERCENT OVER THE PALOUSE/HELLS CANYON...AND
NEAR 0 PERCENT TOWARD THE CLEARWATER/NEZ PERCE.
* CWR (> 0.10 INCH)...0 PERCENT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....55-65 VALLEYS AND 45-50 RIDGES.
* MIN HUMIDITY........39-49 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO VARIABLE LESS THAN 7 MPH.
* RIDGE TOP............SOUTH 5-10 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL UNTIL 1200, THEN 4
KFT AGL UNTIL 1700, THEN 1-2 KFT AGL.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
SUNDAY
MOSTLY CLEAR. LOWS 35-45. HIGHS 55-65. MIN HUMIDITIES
40-50 PERCENT. SOUTHEAST WINDS 5-10 MPH.
MONDAY
PARTLY CLOUDY. LOWS 35-45. HIGHS 55-65. MIN HUMIDITIES
45-55 PERCENT. SOUTHEAST WINDS 5-10 MPH.
TUESDAY
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND SNOW. CHANCE
OF PRECIPITATION 50 PERCENT. LOWS 35-45. HIGHS 50-60. VARIABLE WINDS UP
TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY WITH CHANCE OF RAIN AND SLIGHT CHANCE OF
SNOW. CHANCE OF PRECIPITATION 30 PERCENT. LOWS 30-40. HIGHS 50-60.
THURSDAY
PARTLY CLOUDY. LOWS 30-40. HIGHS 50-60.
MTZ104-105-231000-
KOOTENAI-FLATHEAD/GLACIER PARK-
1231 PM MDT THU OCT 22 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING CLOUDY. RAIN
LIKELY.
* MIN TEMPERATURE.....33-43.
* MAX HUMIDITY........100 PERCENT VALLEYS AND 89-99 PERCENT RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 1-3 MPH.
* RIDGE TOP............SOUTH 5-10 MPH BECOMING SOUTHWEST 10-15 MPH
AFTER MIDNIGHT.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 2200. WEST 10
MPH AFTER 0300.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...40 PERCENT OVER THE KOOTENAI...AND 10 PERCENT
TOWARD THE FLATHEAD/GLACIER PARK.
FRIDAY
* SKY/WEATHER.........PARTLY CLOUDY. RAIN. CHANCE OF SNOW IN THE
AFTERNOON. SNOW LEVEL 7000 FEET.
* MAX TEMPERATURE.....50-60 VALLEYS AND 40-45 RIDGES.
* MIN HUMIDITY........56-66 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTH 10-15 MPH.
* RIDGE TOP............NORTH 10-15 MPH.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1200, THEN 3 KFT AGL.
* TRANSPORT WINDS.....NORTHWEST 15 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...40 PERCENT OVER THE KOOTENAI...AND 90 PERCENT
TOWARD THE FLATHEAD/GLACIER PARK.
FRIDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF RAIN. SNOW
LEVEL 4500 FEET.
* MIN TEMPERATURE.....25-35.
* MAX HUMIDITY........94-100 PERCENT VALLEYS AND 67-77 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 2-5 MPH.
* RIDGE TOP............NORTHEAST 5-10 MPH BECOMING SOUTH AFTER
MIDNIGHT.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....NORTH 10 MPH UNTIL 2200, THEN VARIABLE LESS
THAN 10 MPH UNTIL 2400, THEN SOUTHWEST 10 MPH UNTIL 0100, THEN
EAST 10 MPH UNTIL 0200, THEN SOUTH 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT OVER THE KOOTENAI...AND 0
PERCENT TOWARD THE FLATHEAD/GLACIER PARK.
* CWR (> 0.10 INCH)...10 PERCENT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....50-55 VALLEYS AND 35-45 RIDGES.
* MIN HUMIDITY........40-50 PERCENT VALLEYS AND 50-60 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO VARIABLE LESS THAN 7 MPH.
* RIDGE TOP............SOUTH 5-15 MPH BECOMING SOUTHWEST 5-10 MPH
IN THE AFTERNOON.
* MIXING HEIGHT.......2 KFT AGL UNTIL 1200, THEN 4 KFT AGL UNTIL
1700, THEN 2 KFT AGL.
* TRANSPORT WINDS.....SOUTHWEST 10 MPH UNTIL 0700. 15 MPH AFTER
1100.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
SUNDAY
PARTLY CLOUDY. LOWS 30-40. HIGHS 45-55. MIN HUMIDITIES
45-55 PERCENT. EAST WINDS 10-15 MPH.
MONDAY
PARTLY CLOUDY. LOWS 25-35. HIGHS 45-55. MIN HUMIDITIES
50-60 PERCENT. NORTHEAST WINDS 10-15 MPH.
TUESDAY
MOSTLY CLOUDY WITH CHANCE OF RAIN AND SNOW. CHANCE OF
PRECIPITATION 40 PERCENT. LOWS 30-40. HIGHS 45-55. NORTHWEST WINDS
5-10 MPH.
WEDNESDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW AND RAIN. CHANCE OF
PRECIPITATION 30 PERCENT. LOWS 30-40. HIGHS 40-50.
THURSDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. CHANCE OF SNOW
20 PERCENT. LOWS 25-35. HIGHS 40-50.
MTZ106-108-231000-
WEST LOLO-EAST LOLO-
1231 PM MDT THU OCT 22 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF RAIN.
* MIN TEMPERATURE.....35-45.
* MAX HUMIDITY........89-99 PERCENT VALLEYS AND 97-100 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 2-5 MPH BECOMING
VARIABLE LESS THAN 5 MPH AFTER MIDNIGHT.
* RIDGE TOP............SOUTHEAST 5-10 MPH BECOMING SOUTHWEST 10-15
MPH AFTER MIDNIGHT.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 2100. WEST 10
MPH AFTER 0300.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...40 PERCENT OVER THE WEST LOLO...AND 10
PERCENT TOWARD THE EAST LOLO.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN. SNOW LIKELY IN THE
AFTERNOON.
* MAX TEMPERATURE.....50-55 VALLEYS AND 40-50 RIDGES.
* MIN HUMIDITY........73-83 PERCENT VALLEYS AND 79-89 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTHWEST 5-15 MPH.
* RIDGE TOP............NORTHWEST 5-15 MPH.
* MIXING HEIGHT.......2 KFT AGL UNTIL 1400, THEN 3 KFT AGL.
* TRANSPORT WINDS.....NORTHWEST 15 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...60 PERCENT OVER THE WEST LOLO...AND 100
PERCENT TOWARD THE EAST LOLO.
FRIDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF RAIN AND SNOW. SNOW
LEVEL 5000 FEET.
* MIN TEMPERATURE.....25-35.
* MAX HUMIDITY........79-89 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......VARIABLE LESS THAN 5 MPH IN THE EVENING
BECOMING DOWNSLOPE/DOWNVALLEY 2-5 MPH.
* RIDGE TOP............NORTHWEST 5-10 MPH BECOMING SOUTH AFTER
MIDNIGHT.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....NORTHWEST 10 MPH UNTIL 2300, THEN SOUTHWEST
10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...10 PERCENT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....50-60 VALLEYS AND 40-50 RIDGES.
* MIN HUMIDITY........44-54 PERCENT VALLEYS AND 53-63 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO VARIABLE LESS THAN 7 MPH.
* RIDGE TOP............SOUTH 5-10 MPH.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1200, THEN 4 KFT AGL UNTIL
1700, THEN 1-2 KFT AGL.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 0700. 10 MPH
AFTER 1100.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
SUNDAY
PARTLY CLOUDY. LOWS 30-40. HIGHS 50-60. MIN HUMIDITIES
50-60 PERCENT. SOUTHEAST WINDS 5-10 MPH.
MONDAY
PARTLY CLOUDY. LOWS 30-40. HIGHS 50-60. MIN HUMIDITIES
50-60 PERCENT. EAST WINDS 5-10 MPH.
TUESDAY
MOSTLY CLOUDY WITH CHANCE OF RAIN AND SNOW. CHANCE OF
PRECIPITATION 40 PERCENT. LOWS 30-40. HIGHS 45-55. VARIABLE WINDS UP TO
10 MPH.
WEDNESDAY
MOSTLY CLOUDY WITH CHANCE OF RAIN AND SLIGHT CHANCE OF
SNOW. CHANCE OF PRECIPITATION 40 PERCENT. LOWS 30-40. HIGHS 45-55.
THURSDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. CHANCE OF SNOW
20 PERCENT. LOWS 30-40. HIGHS 45-55.
MTZ107-231000-
FLATHEAD RESERVATION-
1231 PM MDT THU OCT 22 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING CLOUDY. SLIGHT
CHANCE OF RAIN.
* MIN TEMPERATURE.....40-45.
* MAX HUMIDITY........87-97 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......VARIABLE LESS THAN 5 MPH.
* RIDGE TOP............SOUTHEAST 5-10 MPH BECOMING SOUTHWEST 10-15
MPH AFTER MIDNIGHT.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...30 PERCENT OVER AREAS WEST OF HIGHWAY
93...AND 10 PERCENT TOWARD THE MISSION MTNS AND AREAS EAST OF
HIGHWAY 93.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN.
* MAX TEMPERATURE.....50-55 VALLEYS AND 40-45 RIDGES.
* MIN HUMIDITY........68-78 PERCENT VALLEYS AND 92 PERCENT RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTHWEST 5-15 MPH.
* RIDGE TOP............NORTHWEST 5-15 MPH.
* MIXING HEIGHT.......2 KFT AGL UNTIL 1400, THEN 3 KFT AGL.
* TRANSPORT WINDS.....NORTHWEST 15 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...80 PERCENT OVER AREAS WEST OF HIGHWAY
93...AND 100 PERCENT TOWARD THE MISSION MTNS AND AREAS EAST OF
HIGHWAY 93.
FRIDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF RAIN AND SNOW. SNOW
LEVEL 5000 FEET.
* MIN TEMPERATURE.....25-35.
* MAX HUMIDITY........95-100 PERCENT VALLEYS AND 92 PERCENT RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......VARIABLE LESS THAN 5 MPH.
* RIDGE TOP............WEST 5-10 MPH BECOMING SOUTH 5-15 MPH AFTER
MIDNIGHT.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....NORTHWEST 10 MPH UNTIL 2200, THEN VARIABLE
LESS THAN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...10 PERCENT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....50-55 VALLEYS AND 35-40 RIDGES.
* MIN HUMIDITY........44-54 PERCENT VALLEYS AND 56-66 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............SOUTH 10-20 MPH BECOMING SOUTHWEST 5-10 MPH
IN THE AFTERNOON.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1200, THEN 4 KFT AGL UNTIL
1700, THEN 1-2 KFT AGL.
* TRANSPORT WINDS.....SOUTHWEST 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
SUNDAY
PARTLY CLOUDY. LOWS 30-40. HIGHS 50-60. MIN HUMIDITIES
50-60 PERCENT. EAST WINDS 5-10 MPH.
MONDAY
PARTLY CLOUDY. LOWS 30-40. HIGHS 50-60. MIN HUMIDITIES
55-65 PERCENT. NORTHEAST WINDS 5-10 MPH.
TUESDAY
MOSTLY CLOUDY WITH CHANCE OF RAIN AND SNOW. CHANCE OF
PRECIPITATION 40 PERCENT. LOWS 30-40. HIGHS 45-55. VARIABLE WINDS UP TO
10 MPH.
WEDNESDAY
MOSTLY CLOUDY WITH CHANCE OF RAIN AND SLIGHT CHANCE OF
SNOW. CHANCE OF PRECIPITATION 30 PERCENT. LOWS 30-40. HIGHS 45-55.
THURSDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN AND SNOW. CHANCE
OF PRECIPITATION 20 PERCENT. LOWS 30-40. HIGHS 45-55.
MTZ109-231000-
BITTERROOT-
1231 PM MDT THU OCT 22 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING CLOUDY. CHANCE OF
RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING,
THEN RAIN AFTER MIDNIGHT.
* MIN TEMPERATURE.....30-40.
* MAX HUMIDITY........86-96 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......VARIABLE LESS THAN 5 MPH.
* RIDGE TOP............SOUTHEAST 5-10 MPH BECOMING SOUTHWEST 10-15
MPH AFTER MIDNIGHT.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....SOUTH 10 MPH UNTIL 0300, THEN WEST 10 MPH.
* CHANCE LIGHTNING....15 PERCENT.
* CWR (> 0.10 INCH)...40 PERCENT.
FRIDAY
* SKY/WEATHER.........RAIN AND SNOW. SNOW LEVEL 7500 FEET.
* MAX TEMPERATURE.....40-50.
* MIN HUMIDITY........71-81 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTHWEST 10-20 MPH.
* RIDGE TOP............NORTHWEST 15-25 MPH DECREASING TO 5-15 MPH
IN THE AFTERNOON.
* MIXING HEIGHT.......2 KFT AGL.
* TRANSPORT WINDS.....NORTHWEST 15 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...90 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF RAIN AND SNOW. SNOW
LEVEL 5500 FEET.
* MIN TEMPERATURE.....25-35.
* MAX HUMIDITY........94-100 PERCENT VALLEYS AND 80-90 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTHWEST 5-10 MPH IN THE EVENING BECOMING
DOWNSLOPE/DOWNVALLEY 2-5 MPH.
* RIDGE TOP............NORTHWEST 5-15 MPH BECOMING SOUTH UP TO 5
MPH AFTER MIDNIGHT.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....NORTHWEST 15 MPH UNTIL 2200, THEN VARIABLE
LESS THAN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...10 PERCENT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....50-55 VALLEYS AND 40-45 RIDGES.
* MIN HUMIDITY........45-55 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO VARIABLE LESS THAN 7 MPH.
* RIDGE TOP............SOUTH 5-10 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL UNTIL 1200, THEN 3
KFT AGL UNTIL 1400, THEN 4 KFT AGL UNTIL 1700, THEN 1-2 KFT AGL.
* TRANSPORT WINDS.....SOUTHWEST 10 MPH UNTIL 1700, THEN VARIABLE
LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
SUNDAY
MOSTLY CLEAR. LOWS 30-40. HIGHS 50-60. MIN HUMIDITIES
35-45 PERCENT. SOUTH WINDS 5-10 MPH.
MONDAY
PARTLY CLOUDY. LOWS 30-40. HIGHS 50-60. MIN HUMIDITIES
45-55 PERCENT. SOUTHEAST WINDS 5-10 MPH.
TUESDAY
MOSTLY CLOUDY WITH CHANCE OF RAIN AND SNOW. CHANCE OF
PRECIPITATION 50 PERCENT. LOWS 30-40. HIGHS 45-55. SOUTHWEST WINDS
5-10 MPH.
WEDNESDAY
PARTLY CLOUDY WITH CHANCE OF SNOW AND RAIN. CHANCE OF
PRECIPITATION 30 PERCENT. LOWS 30-40. HIGHS 45-55.
THURSDAY
PARTLY CLOUDY. LOWS 30-40. HIGHS 45-55.
MTZ110-111-231000-
DEERLODGE/WEST BEAVERHEAD-EAST BEAVERHEAD-
1231 PM MDT THU OCT 22 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF RAIN.
* MIN TEMPERATURE.....28-38 VALLEYS AND 35-40 RIDGES.
* MAX HUMIDITY........87-97 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTH 5-15 MPH.
* RIDGE TOP............SOUTH 5-15 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....SOUTH 15 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT OVER THE DEERLODGE/WEST
BEAVERHEAD...AND 15 PERCENT TOWARD THE EAST BEAVERHEAD.
* CWR (> 0.10 INCH)...10 PERCENT.
FRIDAY
* SKY/WEATHER.........RAIN. SNOW IN THE AFTERNOON.
* MAX TEMPERATURE.....40-50.
* MIN HUMIDITY........78-88 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 10-15 MPH BECOMING NORTHWEST 5-15
MPH IN THE AFTERNOON.
* RIDGE TOP............WEST 5-15 MPH.
* MIXING HEIGHT.......1-2 KFT AGL.
* TRANSPORT WINDS.....SOUTHWEST 15 MPH UNTIL 1400, THEN NORTHWEST
15 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...100 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. RAIN AND CHANCE OF SNOW. SNOW
LEVEL 5500 FEET.
* MIN TEMPERATURE.....20-25.
* MAX HUMIDITY........100 PERCENT VALLEYS AND 84-94 PERCENT RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTH 10-20 MPH BECOMING VARIABLE LESS THAN
5 MPH AFTER MIDNIGHT.
* RIDGE TOP............NORTH 15-25 MPH BECOMING EAST 10-20 MPH
AFTER MIDNIGHT.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....NORTH 15 MPH UNTIL 0300, THEN VARIABLE LESS
THAN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...30 PERCENT OVER THE DEERLODGE/WEST
BEAVERHEAD...AND 50 PERCENT TOWARD THE EAST BEAVERHEAD.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....45-50 VALLEYS AND 33-43 RIDGES.
* MIN HUMIDITY........52-62 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO VARIABLE LESS THAN 7 MPH.
* RIDGE TOP............SOUTH 5-10 MPH.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1300, THEN 3 KFT AGL UNTIL
1700, THEN BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 0700. 10 MPH
AFTER 1400.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
SUNDAY
MOSTLY CLEAR. LOWS 25-35. HIGHS 45-55. MIN HUMIDITIES
45-55 PERCENT. SOUTH WINDS 5-10 MPH.
MONDAY
PARTLY CLOUDY. LOWS 25-35. HIGHS 45-55. MIN HUMIDITIES
50-60 PERCENT. SOUTHEAST WINDS 5-10 MPH.
TUESDAY
PARTLY CLOUDY WITH CHANCE OF SNOW, RAIN AND LIGHT FREEZING
RAIN. CHANCE OF PRECIPITATION 40 PERCENT. LOWS 25-35. HIGHS 40-50.
SOUTH WINDS 10-15 MPH.
WEDNESDAY
PARTLY CLOUDY WITH CHANCE OF SNOW. CHANCE OF SNOW
30 PERCENT. LOWS 25-35. HIGHS 40-50.
THURSDAY
PARTLY CLOUDY. LOWS 25-35. HIGHS 40-50.
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