713
FNUS55 KMSO 181011
FWFMSO
FIRE WEATHER PLANNING FORECAST FOR WRN MONTANA AND N CNTRL IDAHO
NATIONAL WEATHER SERVICE MISSOULA MT
311 AM MST THU DEC 18 2025
DISCUSSION
IDAHO (ZONES 102 AND 103): ATMOSPHERIC RIVER THURSDAY INTO FRIDAY,
BRINGING WIND IMPACTS AND HEAVY MOUNTAIN SNOW. TAKING A QUICK LOOK
AT THE NEXT 36 HOURS... TODAY'S WEATHER, AREAS OF SNOW IN THE DAY,
THEN SNOW, RAIN LIKELY AND A SLIGHT CHANCE OF FREEZING RAIN IN THE
AFTERNOON. AREAS OF BLOWING SNOW IN THE AFTERNOON. IT'LL BE COOLER.
SNOW MAY BE HEAVY AT TIMES IN THE AFTERNOON. VISIBILITY ONE QUARTER
MILE OR LESS AT TIMES IN THE AFTERNOON. SNOW LEVEL 3000 FEET.
TONIGHT'S WEATHER, RAIN AND SNOW LIKELY. PATCHY BLOWING SNOW UNTIL
MIDNIGHT. BLOWING SNOW AFTER MIDNIGHT. FREEZING RAIN LIKELY UNTIL
MIDNIGHT. SNOW MAY BE HEAVY AT TIMES. VISIBILITY ONE QUARTER MILE OR
LESS AT TIMES. FRIDAY, SNOW LIKELY. BLOWING SNOW THROUGH THE DAY.
RAIN LIKELY IN THE DAY. SNOW MAY BE HEAVY AT TIMES. VISIBILITY ONE
QUARTER MILE OR LESS AT TIMES. SNOW LEVEL 3000 FEET.
NORTHWEST MT (ZONES 104 AND 105): ATMOSPHERIC RIVER THURSDAY INTO
FRIDAY, BRINGING WIND IMPACTS AND HEAVY MOUNTAIN SNOW. TAKING A
QUICK LOOK AT THE NEXT 36 HOURS... TODAY'S WEATHER, MOSTLY CLOUDY
WITH A 50 PERCENT CHANCE OF AREAS OF SNOW. PATCHY BLOWING SNOW IN THE
AFTERNOON. IT'LL BE COLDER. VISIBILITY ONE QUARTER MILE OR LESS AT
TIMES IN THE AFTERNOON. TONIGHT'S WEATHER, RAIN AND SNOW LIKELY.
BLOWING SNOW. SNOW MAY BE HEAVY AT TIMES. VISIBILITY ONE QUARTER MILE
OR LESS AT TIMES. SNOW LEVEL 4500 FEET. FRIDAY, MOSTLY CLOUDY WITH A
50 PERCENT CHANCE OF SNOW. PATCHY BLOWING SNOW. VISIBILITY ONE
QUARTER MILE OR LESS AT TIMES.
WEST CENTRAL MT (ZONES 106, 107 AND 108): ATMOSPHERIC RIVER THURSDAY
INTO FRIDAY, BRINGING WIND IMPACTS AND HEAVY MOUNTAIN SNOW. TAKING
A QUICK LOOK AT THE NEXT 36 HOURS... TODAY'S WEATHER, CLOUDY. A
50 PERCENT CHANCE OF AREAS OF SNOW IN THE AFTERNOON. AREAS OF BLOWING
SNOW IN THE AFTERNOON. IT'LL BE COOLER. VISIBILITY ONE QUARTER MILE
OR LESS AT TIMES IN THE AFTERNOON. TONIGHT'S WEATHER, RAIN LIKELY.
SNOW LIKELY. PATCHY BLOWING SNOW UNTIL MIDNIGHT. BLOWING SNOW AFTER
MIDNIGHT. SNOW MAY BE HEAVY AT TIMES AFTER MIDNIGHT. VISIBILITY ONE
QUARTER MILE OR LESS AT TIMES. FRIDAY, SNOW LIKELY. BLOWING SNOW IN
THE DAY, THEN PATCHY BLOWING SNOW IN THE AFTERNOON. VISIBILITY ONE
QUARTER MILE OR LESS AT TIMES. SNOW MAY BE HEAVY AT TIMES IN THE DAY.
SOUTHWEST MT (ZONES 109, 110 AND 111): ATMOSPHERIC RIVER THURSDAY
INTO FRIDAY, BRINGING WIND IMPACTS AND HEAVY MOUNTAIN SNOW. TAKING
A QUICK LOOK AT THE NEXT 36 HOURS... TODAY'S WEATHER, MOSTLY CLOUDY.
A 50 PERCENT CHANCE OF AREAS OF SNOW IN THE AFTERNOON. AREAS OF
BLOWING SNOW IN THE AFTERNOON. IT'LL BE COLDER. VISIBILITY ONE
QUARTER MILE OR LESS AT TIMES IN THE AFTERNOON. TONIGHT'S WEATHER,
SNOW LIKELY. RAIN LIKELY UNTIL MIDNIGHT, THEN A CHANCE OF RAIN AFTER
MIDNIGHT. PATCHY BLOWING SNOW THROUGH THE NIGHT. RAIN MAY BE HEAVY AT
TIMES UNTIL MIDNIGHT. VISIBILITY ONE QUARTER MILE OR LESS AT TIMES.
FRIDAY, RAIN AND SNOW LIKELY IN THE DAY, THEN SNOW LIKELY IN THE
AFTERNOON. PATCHY BLOWING SNOW THROUGH THE DAY. IT'LL BE NOT AS COOL.
SNOW MAY BE HEAVY AT TIMES IN THE AFTERNOON. VISIBILITY ONE QUARTER
MILE OR LESS AT TIMES. SNOW LEVEL 5000 FEET.
VIEW WEATHER BRIEFING VIDEOS ON OUR YOUTUBE CHANNEL
AT HTTPS://WWW.YOUTUBE.COM/NWSMISSOULA
IDZ102-103-182300-
PALOUSE/HELLS CANYON-CLEARWATER/NEZ PERCE-
211 AM PST THU DEC 18 2025
TODAY
* SKY/WEATHER.........SNOW. RAIN AND SLIGHT CHANCE OF FREEZING RAIN
IN THE AFTERNOON. AREAS OF BLOWING SNOW IN THE AFTERNOON. SNOW
LEVEL 3000 FEET.
* MAX TEMPERATURE.....43-53 VALLEYS AND 35-40 RIDGES.
* MIN HUMIDITY........67-77 PERCENT VALLEYS AND 77-87 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTH 5-15 MPH.
* RIDGE TOP............SOUTH 15-25 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....SOUTH 15 MPH UNTIL 1400, THEN 20 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...90 PERCENT.
TONIGHT
* SKY/WEATHER.........PATCHY BLOWING SNOW IN THE EVENING. BLOWING
SNOW AFTER MIDNIGHT. FREEZING RAIN IN THE EVENING. RAIN AND SNOW.
SNOW LEVEL 6000 FEET.
* MIN TEMPERATURE.....30-40 VALLEYS AND 25-30 RIDGES.
* MAX HUMIDITY........85-95 PERCENT VALLEYS AND 95-100 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 UNTIL 2400, THEN 25 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...100 PERCENT.
FRIDAY
* SKY/WEATHER.........BLOWING SNOW IN THE MORNING. AREAS OF BLOWING
SNOW IN THE AFTERNOON. RAIN IN THE MORNING. SNOW. SNOW LEVEL 3000
FEET.
* MAX TEMPERATURE.....43-53 VALLEYS AND 30-40 RIDGES.
* MIN HUMIDITY........62-72 PERCENT VALLEYS AND 76-86 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 5-15 MPH.
* RIDGE TOP............WEST 20-30 MPH DECREASING TO 10-20 MPH IN
THE AFTERNOON.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1200, THEN 3 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 PALOUSE/HELLS CANYON...AND
100 PERCENT IN THE CLEARWATER/NEZ PERCE.
SATURDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW. CHANCE OF SNOW
40 PERCENT. LOWS 25-35. HIGHS 35-45. MIN HUMIDITIES 55-65 PERCENT.
SOUTHWEST WINDS 5-15 MPH.
SUNDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW AND RAIN LIKELY. CHANCE OF
PRECIPITATION 70 PERCENT. LOWS 20-30. HIGHS 35-45. MIN HUMIDITIES
65-75 PERCENT. SOUTH WINDS 10-15 MPH.
MONDAY
MOSTLY CLOUDY WITH SNOW WITH RAIN LIKELY. CHANCE OF
PRECIPITATION 80 PERCENT. LOWS 30-40. HIGHS 35-45. SOUTHWEST WINDS
10-15 MPH.
TUESDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW AND RAIN. CHANCE OF
PRECIPITATION 40 PERCENT. LOWS 25-35. HIGHS 35-45.
WEDNESDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW AND RAIN. CHANCE OF
PRECIPITATION 30 PERCENT. LOWS 30-40. HIGHS 40-50.
MTZ104-105-182300-
KOOTENAI-FLATHEAD/GLACIER PARK-
311 AM MST THU DEC 18 2025
TODAY
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW. PATCHY BLOWING
SNOW IN THE AFTERNOON.
* MAX TEMPERATURE.....35-45 VALLEYS AND 30-35 RIDGES.
* MIN HUMIDITY........72-82 PERCENT VALLEYS AND 78-88 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTH 10-20 MPH.
* RIDGE TOP............SOUTH 15-25 MPH.
* MIXING HEIGHT.......2 KFT AGL.
* TRANSPORT WINDS.....SOUTHWEST 20 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...50 PERCENT.
TONIGHT
* SKY/WEATHER.........BLOWING SNOW. SNOW AND RAIN. SNOW LEVEL 4500
FEET.
* MIN TEMPERATURE.....25-30 VALLEYS AND 15-25 RIDGES.
* MAX HUMIDITY........89-99 PERCENT VALLEYS AND 81-91 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 30-40 MPH.
* RIDGE TOP............SOUTHWEST 35-45 MPH.
* MIXING HEIGHT.......1-2 KFT AGL.
* TRANSPORT WINDS.....SOUTH 20 MPH UNTIL 2100, THEN SOUTHWEST 30
MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...100 PERCENT.
FRIDAY
* SKY/WEATHER.........PARTLY CLOUDY. PATCHY BLOWING SNOW. CHANCE OF
SNOW.
* MAX TEMPERATURE.....35-40 VALLEYS AND 25-35 RIDGES.
* MIN HUMIDITY........50-60 PERCENT VALLEYS AND 63-73 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO VARIABLE LESS THAN 7 MPH.
* RIDGE TOP............WEST 35-45 MPH DECREASING TO 25-35 MPH IN
THE AFTERNOON.
* MIXING HEIGHT.......3 KFT AGL UNTIL 1100, THEN 4 KFT AGL.
* TRANSPORT WINDS.....WEST 35 MPH UNTIL 1500, THEN 25 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...10 PERCENT IN THE KOOTENAI...AND 50 PERCENT
IN THE FLATHEAD/GLACIER PARK.
SATURDAY
MOSTLY CLOUDY WITH SNOW. PATCHY BLOWING SNOW. CHANCE OF
SNOW 90 PERCENT. LOWS 20-30. HIGHS 30-40. MIN HUMIDITIES 65-75 PERCENT.
SOUTHWEST WINDS 15-25 MPH.
SUNDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW. CHANCE OF SNOW 50 PERCENT.
LOWS 20-30. HIGHS 30-40. MIN HUMIDITIES 65-75 PERCENT. SOUTHWEST WINDS
15-25 MPH.
MONDAY
MOSTLY CLOUDY WITH SNOW AND RAIN LIKELY. CHANCE OF
PRECIPITATION 70 PERCENT. LOWS 25-35. HIGHS 35-45. SOUTHWEST WINDS
10-20 MPH.
TUESDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW. CHANCE OF SNOW
40 PERCENT. LOWS 25-35. HIGHS 35-45.
WEDNESDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW. CHANCE OF SNOW
40 PERCENT. LOWS 20-30. HIGHS 30-40.
MTZ106-108-182300-
WEST LOLO-EAST LOLO-
311 AM MST THU DEC 18 2025
TODAY
* SKY/WEATHER.........MOSTLY CLOUDY. AREAS OF BLOWING SNOW IN THE
AFTERNOON.
* MAX TEMPERATURE.....35-40.
* MIN HUMIDITY........63-73 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO VARIABLE LESS THAN 7 MPH.
* RIDGE TOP............SOUTHWEST 15-25 MPH.
* MIXING HEIGHT.......1-2 KFT AGL.
* TRANSPORT WINDS.....SOUTHWEST 15 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...60 PERCENT IN THE WEST LOLO...AND 40 PERCENT
IN THE EAST LOLO.
TONIGHT
* SKY/WEATHER.........BLOWING SNOW. SNOW AND RAIN. SNOW LEVEL 5500
FEET.
* MIN TEMPERATURE.....20-30.
* MAX HUMIDITY........91-97 PERCENT VALLEYS AND 85-95 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 20-30 MPH.
* RIDGE TOP............SOUTHWEST 30-40 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....SOUTHWEST 20 MPH UNTIL 0100, THEN WEST 25
MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...100 PERCENT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. BLOWING SNOW IN THE MORNING.
PATCHY BLOWING SNOW IN THE AFTERNOON. SNOW.
* MAX TEMPERATURE.....30-40.
* MIN HUMIDITY........54-64 PERCENT VALLEYS AND 63-73 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 5-15 MPH.
* RIDGE TOP............WEST 30-40 MPH DECREASING TO 20-30 MPH IN
THE AFTERNOON.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1000, THEN 4 KFT AGL UNTIL
1300, THEN 5 KFT AGL UNTIL 1600, THEN 4 KFT AGL.
* TRANSPORT WINDS.....WEST 30 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...60 PERCENT IN THE WEST LOLO...AND 80 PERCENT
IN THE EAST LOLO.
SATURDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW. CHANCE OF SNOW
50 PERCENT. LOWS 20-30. HIGHS 30-40. MIN HUMIDITIES 55-65 PERCENT.
SOUTHWEST WINDS 10-20 MPH.
SUNDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW. CHANCE OF SNOW 30 PERCENT.
LOWS 20-30. HIGHS 35-45. MIN HUMIDITIES 65-75 PERCENT. SOUTH WINDS
10-15 MPH.
MONDAY
MOSTLY CLOUDY WITH SNOW AND RAIN LIKELY. CHANCE OF
PRECIPITATION 60 PERCENT. LOWS 30-40. HIGHS 35-45. SOUTHWEST WINDS
10-15 MPH.
TUESDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW. CHANCE OF SNOW
30 PERCENT. LOWS 25-35. HIGHS 35-45.
WEDNESDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW. CHANCE OF SNOW
30 PERCENT. LOWS 25-35. HIGHS 35-45.
MTZ107-182300-
FLATHEAD RESERVATION-
311 AM MST THU DEC 18 2025
TODAY
* SKY/WEATHER.........MOSTLY CLOUDY. PATCHY BLOWING SNOW IN THE
AFTERNOON. RAIN IN THE AFTERNOON.
* MAX TEMPERATURE.....40-45 VALLEYS AND 30-35 RIDGES.
* MIN HUMIDITY........63-73 PERCENT VALLEYS AND 72-82 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTH 10-20 MPH.
* RIDGE TOP............SOUTHWEST 10-20 MPH INCREASING TO 20-30 MPH
IN THE AFTERNOON.
* MIXING HEIGHT.......1-2 KFT AGL.
* TRANSPORT WINDS.....SOUTH 15 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...30 PERCENT.
TONIGHT
* SKY/WEATHER.........PATCHY BLOWING SNOW IN THE EVENING. BLOWING
SNOW AFTER MIDNIGHT. RAIN AND SNOW. SNOW LEVEL 5000 FEET.
* MIN TEMPERATURE.....30-35 VALLEYS AND 15-20 RIDGES.
* MAX HUMIDITY........77-87 PERCENT VALLEYS AND 97 PERCENT RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 20-30 MPH.
* RIDGE TOP............SOUTHWEST 30-40 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....SOUTHWEST 20 MPH UNTIL 0300, THEN WEST 20
MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...90 PERCENT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. BLOWING SNOW IN THE MORNING.
PATCHY BLOWING SNOW IN THE AFTERNOON. SNOW LIKELY.
* MAX TEMPERATURE.....40-45 VALLEYS AND 25-30 RIDGES.
* MIN HUMIDITY........47-57 PERCENT VALLEYS AND 62-72 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 20-30 MPH.
* RIDGE TOP............WEST 25-35 MPH.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 0900, THEN 4 KFT AGL UNTIL
1200, THEN 5 KFT AGL UNTIL 1600, THEN 4 KFT AGL.
* TRANSPORT WINDS.....WEST 25 MPH UNTIL 0800, THEN 30 MPH UNTIL
1600, THEN 20 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...40 PERCENT IN AREAS WEST OF HIGHWAY 93...AND
80 PERCENT IN THE MISSION MTNS AND AREAS EAST OF HIGHWAY 93.
SATURDAY
MOSTLY CLOUDY WITH SNOW LIKELY. CHANCE OF SNOW 70 PERCENT.
LOWS 25-35. HIGHS 35-45. MIN HUMIDITIES 55-65 PERCENT. SOUTHWEST WINDS
10-20 MPH.
SUNDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW. CHANCE OF SNOW 30 PERCENT.
LOWS 25-35. HIGHS 35-45. MIN HUMIDITIES 60-70 PERCENT. SOUTH WINDS
10-20 MPH.
MONDAY
MOSTLY CLOUDY WITH SNOW LIKELY AND CHANCE OF RAIN. CHANCE OF
PRECIPITATION 60 PERCENT. LOWS 30-40. HIGHS 40-50. SOUTH WINDS
5-15 MPH.
TUESDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW AND RAIN. CHANCE OF
PRECIPITATION 30 PERCENT. LOWS 30-40. HIGHS 35-45.
WEDNESDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW AND RAIN. CHANCE OF
PRECIPITATION 40 PERCENT. LOWS 25-35. HIGHS 35-45.
MTZ109-182300-
BITTERROOT-
311 AM MST THU DEC 18 2025
TODAY
* SKY/WEATHER.........MOSTLY CLOUDY. SNOW LIKELY. AREAS OF BLOWING
SNOW IN THE AFTERNOON.
* MAX TEMPERATURE.....40-45 VALLEYS AND 30-35 RIDGES.
* MIN HUMIDITY........63-73 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTH 10-20 MPH.
* RIDGE TOP............SOUTH 15-25 MPH.
* MIXING HEIGHT.......1-2 KFT AGL.
* TRANSPORT WINDS.....SOUTH 15 MPH UNTIL 1200, THEN SOUTHWEST 20
MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...80 PERCENT IN THE DARBY, SULA, AND WEST FORK
DISTRICTS...AND 30 PERCENT IN AREAS NORTH OF HAMILTON.
TONIGHT
* SKY/WEATHER.........BLOWING SNOW. SNOW AND RAIN. SNOW LEVEL 6000
FEET.
* MIN TEMPERATURE.....23-33.
* MAX HUMIDITY........81-91 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 25-35 MPH.
* RIDGE TOP............SOUTHWEST 30-40 MPH.
* MIXING HEIGHT.......1-2 KFT AGL.
* TRANSPORT WINDS.....SOUTHWEST 25 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...100 PERCENT.
FRIDAY
* SKY/WEATHER.........BLOWING SNOW. RAIN IN THE MORNING. SNOW. SNOW
LEVEL 4000 FEET.
* MAX TEMPERATURE.....45-50 VALLEYS AND 30-35 RIDGES.
* MIN HUMIDITY........58-68 PERCENT VALLEYS AND 69-79 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 10-15 MPH.
* RIDGE TOP............WEST 30-40 MPH DECREASING TO 15-25 MPH IN
THE AFTERNOON.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1100, THEN 4 KFT AGL.
* TRANSPORT WINDS.....WEST 25 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...100 PERCENT.
SATURDAY
COLDER. MOSTLY CLOUDY WITH CHANCE OF SNOW. CHANCE OF SNOW
40 PERCENT. LOWS 20-30. HIGHS 25-35. MIN HUMIDITIES 50-60 PERCENT.
SOUTHWEST WINDS 10-20 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SNOW. CHANCE OF SNOW 50 PERCENT.
LOWS 15-25. HIGHS 35-45. MIN HUMIDITIES 60-70 PERCENT. SOUTH WINDS
10-20 MPH.
MONDAY
MOSTLY CLOUDY WITH SNOW AND RAIN LIKELY. CHANCE OF
PRECIPITATION 60 PERCENT. LOWS 30-40. HIGHS 35-45. SOUTHWEST WINDS
10-20 MPH.
TUESDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW. CHANCE OF SNOW
30 PERCENT. LOWS 25-35. HIGHS 35-45.
WEDNESDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW. CHANCE OF SNOW
30 PERCENT. LOWS 25-35. HIGHS 35-45.
MTZ110-111-182300-
DEERLODGE/WEST BEAVERHEAD-EAST BEAVERHEAD-
311 AM MST THU DEC 18 2025
TODAY
* SKY/WEATHER.........MOSTLY CLOUDY. PATCHY BLOWING SNOW IN THE
AFTERNOON.
* MAX TEMPERATURE.....35-40 VALLEYS AND 25-35 RIDGES.
* MIN HUMIDITY........46-56 PERCENT VALLEYS AND 59-69 PERCENT
RIDGES.
* 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 1100, THEN 2
KFT AGL.
* TRANSPORT WINDS.....SOUTHWEST 15 MPH UNTIL 1100, THEN 25 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...10 PERCENT.
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. PATCHY BLOWING SNOW. SNOW AND
CHANCE OF RAIN. SNOW LEVEL 6000 FEET.
* MIN TEMPERATURE.....20-30.
* MAX HUMIDITY........70-80 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 25-35 MPH.
* RIDGE TOP............SOUTHWEST 30-40 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....SOUTHWEST 25 MPH UNTIL 0100, THEN 30 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT IN THE DEERLODGE/WEST
BEAVERHEAD...AND 0 PERCENT IN THE EAST BEAVERHEAD.
* CWR (> 0.10 INCH)...90 PERCENT IN THE DEERLODGE/WEST
BEAVERHEAD...AND 20 PERCENT IN THE EAST BEAVERHEAD.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. PATCHY BLOWING SNOW. RAIN
LIKELY IN THE MORNING. SNOW. SNOW LEVEL 5500 FEET.
* MAX TEMPERATURE.....40-50 VALLEYS AND 30-35 RIDGES.
* MIN HUMIDITY........52-62 PERCENT VALLEYS AND 61-71 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 30-40 MPH.
* RIDGE TOP............SOUTHWEST 30-40 MPH DECREASING TO 20-30 MPH
IN THE AFTERNOON.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL UNTIL 0900, THEN 3
KFT AGL.
* TRANSPORT WINDS.....WEST 35 MPH UNTIL 1600, THEN 25 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...90 PERCENT IN THE DEERLODGE/WEST
BEAVERHEAD...AND 40 PERCENT IN THE EAST BEAVERHEAD.
SATURDAY
COLDER. PARTLY CLOUDY WITH CHANCE OF SNOW. CHANCE OF SNOW
50 PERCENT. LOWS 15-25. HIGHS 25-35. MIN HUMIDITIES 40-50 PERCENT. WEST
WINDS 10-20 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SNOW. CHANCE OF SNOW 30 PERCENT.
LOWS 15-25. HIGHS 35-45. MIN HUMIDITIES 55-65 PERCENT. SOUTH WINDS
10-20 MPH.
MONDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW AND RAIN. CHANCE OF
PRECIPITATION 50 PERCENT. LOWS 30-40. HIGHS 35-45. SOUTHWEST WINDS
10-20 MPH.
TUESDAY
MOSTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. CHANCE OF SNOW
20 PERCENT. LOWS 25-35. HIGHS 35-45.
WEDNESDAY
MOSTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. CHANCE OF SNOW
20 PERCENT. LOWS 25-35. HIGHS 40-50.
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