843
FNUS55 KMSO 201827
FWFMSO
FIRE WEATHER PLANNING FORECAST FOR WRN MONTANA AND N CNTRL IDAHO
NATIONAL WEATHER SERVICE MISSOULA MT
1226 PM MDT TUE OCT 20 2026
DISCUSSION
IDAHO (ZONES 102 AND 103): AUTOMATED INTERIM UPDATE. A SIGNIFICANT
CHANGE ARRIVES THURSDAY NIGHT INTO FRIDAY AS A POTENT COLD FRONT
PUSHES THROUGH THE REGION, WITH MUCH COLDER TEMPERATURES AND
PRECIPITATION EXPECTED. TAKING A QUICK LOOK AT THE NEXT 48 HOURS...
TONIGHT'S WEATHER, PARTLY CLOUDY. WEDNESDAY, PARTLY CLOUDY.
WEDNESDAY NIGHT, PARTLY CLOUDY. THURSDAY, MOSTLY CLOUDY. SLIGHT
CHANCE OF RAIN IN THE MORNING, THEN CHANCE OF RAIN SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. IT'LL BE COOLER.
NORTHWEST MT (ZONES 104 AND 105): AUTOMATED INTERIM UPDATE. A
SIGNIFICANT CHANGE ARRIVES THURSDAY NIGHT INTO FRIDAY AS A POTENT
COLD FRONT PUSHES THROUGH THE REGION, WITH MUCH COLDER TEMPERATURES
AND PRECIPITATION EXPECTED. TAKING A QUICK LOOK AT THE NEXT
48 HOURS... TONIGHT'S WEATHER, MOSTLY CLEAR. WEDNESDAY, MOSTLY
SUNNY. WEDNESDAY NIGHT, PARTLY CLOUDY. THURSDAY, PARTLY CLOUDY. A
40 PERCENT CHANCE OF RAIN IN THE AFTERNOON. HUMIDITIES WILL BE
HIGHER.
WEST CENTRAL MT (ZONES 106, 107 AND 108): AUTOMATED INTERIM UPDATE. A
SIGNIFICANT CHANGE ARRIVES THURSDAY NIGHT INTO FRIDAY AS A POTENT
COLD FRONT PUSHES THROUGH THE REGION, WITH MUCH COLDER TEMPERATURES
AND PRECIPITATION EXPECTED. TAKING A QUICK LOOK AT THE NEXT
48 HOURS... TONIGHT'S WEATHER, MOSTLY CLEAR. WEDNESDAY, MOSTLY
SUNNY. WEDNESDAY NIGHT, PARTLY CLOUDY. THURSDAY, PARTLY CLOUDY. A
20 PERCENT CHANCE OF RAIN IN THE AFTERNOON. HUMIDITIES WILL BE
HIGHER.
SOUTHWEST MT (ZONES 109, 110 AND 111): AUTOMATED INTERIM UPDATE. A
SIGNIFICANT CHANGE ARRIVES THURSDAY NIGHT INTO FRIDAY AS A POTENT
COLD FRONT PUSHES THROUGH THE REGION, WITH MUCH COLDER TEMPERATURES
AND PRECIPITATION EXPECTED. TAKING A QUICK LOOK AT THE NEXT
48 HOURS... TONIGHT'S WEATHER, MOSTLY CLEAR. WEDNESDAY, MOSTLY
SUNNY. HUMIDITIES WILL BE HIGHER. WEDNESDAY NIGHT, PARTLY CLOUDY.
THURSDAY, PARTLY CLOUDY.
IDZ102-103-211000-
PALOUSE/HELLS CANYON-CLEARWATER/NEZ PERCE-
1126 AM PDT TUE OCT 20 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....35-45.
* MAX HUMIDITY........60-70 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 2-5 MPH.
* RIDGE TOP............EAST 5-10 MPH BECOMING SOUTHEAST AFTER
MIDNIGHT.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....70-80 VALLEYS AND 60-65 RIDGES.
* MIN HUMIDITY........30-40 PERCENT VALLEYS AND 37-47 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............SOUTH 5-10 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL UNTIL 1200, THEN 3
KFT AGL UNTIL 1400, THEN 6 KFT AGL UNTIL 1700, THEN 4 KFT AGL.
* TRANSPORT WINDS.....SOUTHEAST 10 MPH UNTIL 1400, THEN SOUTHWEST
10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....45-50 VALLEYS AND 38-48 RIDGES.
* MAX HUMIDITY........80-90 PERCENT VALLEYS AND 71-81 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHEAST 5-10 MPH.
* RIDGE TOP............SOUTHEAST 5-10 MPH.
* 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)...0 PERCENT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF RAIN IN THE
MORNING. SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.....65-75 VALLEYS AND 55-60 RIDGES.
* MIN HUMIDITY........55-65 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO VARIABLE LESS THAN 7 MPH.
* RIDGE TOP............SOUTHEAST 5-10 MPH.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1200, THEN 4 KFT AGL UNTIL
1400, THEN 5 KFT AGL UNTIL 1700, THEN 3 KFT AGL.
* TRANSPORT WINDS.....SOUTHEAST 10 MPH UNTIL 1400, THEN SOUTHWEST
10 MPH.
* CHANCE LIGHTNING....15 PERCENT OVER THE PALOUSE/HELLS
CANYON...AND 20 PERCENT TOWARD THE CLEARWATER/NEZ PERCE.
* CWR (> 0.10 INCH)...10 PERCENT.
FRIDAY
COOLER. RAIN SHOWERS. CHANCE OF SHOWERS NEAR 100 PERCENT.
LOWS 35-45. HIGHS 45-55. MIN HUMIDITIES 40-50 PERCENT. WEST WINDS
10-15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 30-40. HIGHS 50-60. MIN HUMIDITIES
35-45 PERCENT. SOUTH WINDS 5-10 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 35-45. HIGHS 50-60. SOUTHEAST WINDS
10-15 MPH.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN AND SNOW. CHANCE OF
PRECIPITATION 20 PERCENT. LOWS 35-45. HIGHS 55-65.
TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN AND SNOW. CHANCE OF
PRECIPITATION 20 PERCENT. LOWS 35-45. HIGHS 50-60.
MTZ104-105-211000-
KOOTENAI-FLATHEAD/GLACIER PARK-
1226 PM MDT TUE OCT 20 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....35-40.
* MAX HUMIDITY........88-98 PERCENT VALLEYS AND 57-67 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTH 5-10 MPH.
* RIDGE TOP............SOUTH 10-15 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....65-75 VALLEYS AND 50-60 RIDGES.
* MIN HUMIDITY........29-39 PERCENT VALLEYS AND 35-45 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............SOUTH 5-15 MPH.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1300, THEN 4 KFT AGL.
* TRANSPORT WINDS.....SOUTH 10 MPH UNTIL 1400, THEN SOUTHWEST 10
MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....35-45.
* MAX HUMIDITY........92-100 PERCENT VALLEYS AND 60-70 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTH 5-10 MPH.
* RIDGE TOP............SOUTH 10-15 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....SOUTH 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....65-70 VALLEYS AND 55-60 RIDGES.
* MIN HUMIDITY........36-46 PERCENT VALLEYS AND 44-54 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO VARIABLE LESS THAN 7 MPH.
* RIDGE TOP............SOUTHEAST 5-15 MPH BECOMING SOUTH UP TO 5
MPH IN THE AFTERNOON.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1200, THEN 4 KFT AGL UNTIL
1400, THEN 6 KFT AGL UNTIL 1700, THEN 3 KFT AGL.
* TRANSPORT WINDS.....SOUTH 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
FRIDAY
COOLER. CLOUDY WITH RAIN. CHANCE OF RAIN 80 PERCENT. LOWS
40-50. HIGHS 45-55. MIN HUMIDITIES 50-60 PERCENT. WEST WINDS 10-15 MPH.
SATURDAY
MOSTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. CHANCE OF SNOW
20 PERCENT. LOWS 30-40. HIGHS 45-55. MIN HUMIDITIES 45-55 PERCENT.
SOUTHWEST WINDS 5-10 MPH.
SUNDAY
MOSTLY CLOUDY WITH SLIGHT CHANCE OF RAIN AND SNOW. CHANCE OF
PRECIPITATION 20 PERCENT. LOWS 25-35. HIGHS 40-50. NORTHEAST WINDS
10-15 MPH.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. CHANCE OF SNOW
20 PERCENT. LOWS 25-35. HIGHS 45-55.
TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. CHANCE OF SNOW
20 PERCENT. LOWS 30-40. HIGHS 45-55.
MTZ106-108-211000-
WEST LOLO-EAST LOLO-
1226 PM MDT TUE OCT 20 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....35-40.
* MAX HUMIDITY........76-86 PERCENT VALLEYS AND 62-72 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 1-3 MPH.
* RIDGE TOP............SOUTHEAST 5-10 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....65-75 VALLEYS AND 58-68 RIDGES.
* MIN HUMIDITY........27-37 PERCENT VALLEYS AND 34-44 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO VARIABLE LESS THAN 7 MPH.
* RIDGE TOP............SOUTH 5-10 MPH BECOMING SOUTHWEST IN THE
AFTERNOON.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1300, THEN 4 KFT AGL UNTIL
1500, THEN 5 KFT AGL UNTIL 1700, THEN 4 KFT AGL.
* TRANSPORT WINDS.....SOUTH 10 MPH UNTIL 1400, THEN SOUTHWEST 10
MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....33-43 VALLEYS AND 40-45 RIDGES.
* MAX HUMIDITY........78-88 PERCENT VALLEYS AND 69-79 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 1-3 MPH.
* RIDGE TOP............SOUTH 5-10 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT OVER THE WEST LOLO...AND NEAR 0
PERCENT TOWARD THE EAST LOLO.
* CWR (> 0.10 INCH)...0 PERCENT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....58-68.
* MIN HUMIDITY........42-52 PERCENT VALLEYS AND 49-59 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO VARIABLE LESS THAN 7 MPH.
* RIDGE TOP............SOUTHEAST UP TO 5 MPH.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1200, THEN 4 KFT AGL UNTIL
1400, THEN 5 KFT AGL UNTIL 1700, THEN 2 KFT AGL.
* TRANSPORT WINDS.....SOUTH 10 MPH.
* CHANCE LIGHTNING....15 PERCENT OVER THE WEST LOLO...AND NEAR 0
PERCENT TOWARD THE EAST LOLO.
* CWR (> 0.10 INCH)...0 PERCENT.
FRIDAY
COOLER. CLOUDY WITH RAIN. CHANCE OF RAIN 90 PERCENT. LOWS
40-50. HIGHS 45-55. MIN HUMIDITIES 45-55 PERCENT. WEST WINDS 10-15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 30-40. HIGHS 45-55. MIN HUMIDITIES
45-55 PERCENT. SOUTHWEST WINDS 5-10 MPH.
SUNDAY
MOSTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. CHANCE OF SNOW
20 PERCENT. LOWS 30-40. HIGHS 45-55. EAST WINDS 5-10 MPH.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. CHANCE OF SNOW
20 PERCENT. LOWS 30-40. HIGHS 45-55.
TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. CHANCE OF SNOW
20 PERCENT. LOWS 30-40. HIGHS 45-55.
MTZ107-211000-
FLATHEAD RESERVATION-
1226 PM MDT TUE OCT 20 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....35-45.
* MAX HUMIDITY........82-92 PERCENT VALLEYS AND 68-78 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 1-3 MPH.
* RIDGE TOP............SOUTHEAST 5-15 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....65-70 VALLEYS AND 50-55 RIDGES.
* MIN HUMIDITY........34-44 PERCENT VALLEYS AND 43-53 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.......BELOW 500 FT TO 1 KFT AGL UNTIL 1300, THEN 3
KFT AGL.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT OVER AREAS WEST OF HIGHWAY 93...AND
NEAR 0 PERCENT TOWARD THE MISSION MTNS AND AREAS EAST OF HIGHWAY
93.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....35-45.
* MAX HUMIDITY........79-89 PERCENT VALLEYS AND 66-76 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTH 5-10 MPH.
* RIDGE TOP............SOUTH 10-15 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....65-70 VALLEYS AND 50-55 RIDGES.
* MIN HUMIDITY........42-52 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............SOUTHEAST 5-15 MPH.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1300, THEN 4 KFT AGL UNTIL
1700, THEN 1-2 KFT AGL.
* TRANSPORT WINDS.....SOUTHEAST 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
FRIDAY
COOLER. CLOUDY WITH RAIN. CHANCE OF RAIN 90 PERCENT. LOWS
40-50. HIGHS 50-60. MIN HUMIDITIES 50-60 PERCENT. WEST WINDS 10-15 MPH.
SATURDAY
PARTLY CLOUDY WITH CHANCE OF RAIN. CHANCE OF RAIN
30 PERCENT. LOWS 30-40. HIGHS 50-60. MIN HUMIDITIES 45-55 PERCENT.
SOUTHWEST WINDS 5-10 MPH.
SUNDAY
MOSTLY CLOUDY WITH SLIGHT CHANCE OF RAIN AND SNOW. CHANCE OF
PRECIPITATION 20 PERCENT. LOWS 30-40. HIGHS 45-55. NORTHEAST WINDS
5-10 MPH.
MONDAY
PARTLY CLOUDY. LOWS 30-40. HIGHS 50-60.
TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN AND SNOW. CHANCE OF
PRECIPITATION 20 PERCENT. LOWS 30-40. HIGHS 50-60.
MTZ109-211000-
BITTERROOT-
1226 PM MDT TUE OCT 20 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....35-45.
* MAX HUMIDITY........76-86 PERCENT VALLEYS AND 56-66 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 2-5 MPH.
* RIDGE TOP............EAST 5-10 MPH BECOMING SOUTHEAST AFTER
MIDNIGHT.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 2200, THEN
SOUTHEAST 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....70-75 VALLEYS AND 55-60 RIDGES.
* MIN HUMIDITY........37-47 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 1200, THEN 4 KFT AGL UNTIL
1400, THEN 6 KFT AGL UNTIL 1700, THEN 4 KFT AGL.
* TRANSPORT WINDS.....SOUTH 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....40-45.
* MAX HUMIDITY........85-95 PERCENT VALLEYS AND 70-80 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTH 5-10 MPH.
* RIDGE TOP............SOUTH 5-10 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....SOUTH 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....70-75 VALLEYS AND 55-60 RIDGES.
* MIN HUMIDITY........46-56 PERCENT VALLEYS AND 55-65 PERCENT
RIDGES.
* 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 1100, THEN 3
KFT AGL UNTIL 1300, THEN 6 KFT AGL UNTIL 1700, THEN 3 KFT AGL.
* TRANSPORT WINDS.....SOUTH 15 MPH.
* CHANCE LIGHTNING....20 PERCENT OVER THE DARBY, SULA, AND WEST
FORK DISTRICTS...AND 15 PERCENT TOWARD AREAS NORTH OF HAMILTON.
* CWR (> 0.10 INCH)...10 PERCENT.
FRIDAY
COLDER. CLOUDY WITH RAIN SHOWERS WITH POSSIBLE SNOW AND
THUNDERSTORMS. CHANCE OF PRECIPITATION 90 PERCENT. LOWS 35-45. HIGHS
40-50. MIN HUMIDITIES 40-50 PERCENT. WEST WINDS 15-25 MPH.
SATURDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. CHANCE OF SNOW
20 PERCENT. LOWS 25-35. HIGHS 45-55. MIN HUMIDITIES 30-40 PERCENT.
SOUTHWEST WINDS 5-10 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 30-40. HIGHS 50-60. SOUTH WINDS 5-10 MPH.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. CHANCE OF SNOW
20 PERCENT. LOWS 30-40. HIGHS 50-60.
TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN AND SNOW. CHANCE OF
PRECIPITATION 20 PERCENT. LOWS 30-40. HIGHS 50-60.
MTZ110-111-211000-
DEERLODGE/WEST BEAVERHEAD-EAST BEAVERHEAD-
1226 PM MDT TUE OCT 20 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....23-33 VALLEYS AND 35-40 RIDGES.
* MAX HUMIDITY........85-95 PERCENT VALLEYS AND 72-82 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHEAST 5-10 MPH.
* RIDGE TOP............SOUTHEAST 5-10 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL.
* TRANSPORT WINDS.....SOUTHEAST 10 MPH UNTIL 0300, THEN SOUTH 10
MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....65-70 VALLEYS AND 50-60 RIDGES.
* MIN HUMIDITY........33-43 PERCENT VALLEYS AND 43-53 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTH 5-15 MPH.
* RIDGE TOP............SOUTH 5-15 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL UNTIL 1100, THEN 3
KFT AGL UNTIL 1300, THEN 6 KFT AGL UNTIL 1700, THEN 4 KFT AGL.
* TRANSPORT WINDS.....SOUTH 15 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....28-38 VALLEYS AND 35-40 RIDGES.
* MAX HUMIDITY........92-100 PERCENT VALLEYS AND 78-88 PERCENT
RIDGES.
* 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 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....65-70 VALLEYS AND 50-60 RIDGES.
* MIN HUMIDITY........35-45 PERCENT VALLEYS AND 49-59 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTH 10-20 MPH.
* RIDGE TOP............SOUTH 10-20 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL UNTIL 1100, THEN 4
KFT AGL UNTIL 1300, THEN 6 KFT AGL UNTIL 1700, THEN 3 KFT AGL.
* TRANSPORT WINDS.....SOUTH 15 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
FRIDAY
COLDER, RAIN. CHANCE OF RAIN NEAR 100 PERCENT. LOWS 35-45.
HIGHS 40-50. MIN HUMIDITIES 45-55 PERCENT. SOUTHWEST WINDS 10-20 MPH.
SATURDAY
PARTLY CLOUDY WITH CHANCE OF SNOW. CHANCE OF SNOW
40 PERCENT. LOWS 25-35. HIGHS 40-50. MIN HUMIDITIES 40-50 PERCENT. WEST
WINDS 15-25 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 25-35. HIGHS 45-55. SOUTH WINDS
10-15 MPH.
MONDAY
PARTLY CLOUDY. LOWS 25-35. HIGHS 45-55.
TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. CHANCE OF SNOW
20 PERCENT. LOWS 25-35. HIGHS 45-55.
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