611
FNUS55 KMSO 152003
FWFMSO
FIRE WEATHER PLANNING FORECAST FOR WRN MONTANA AND N CNTRL IDAHO
NATIONAL WEATHER SERVICE MISSOULA MT
202 PM MDT FRI MAY 15 2026
DISCUSSION
IDAHO (ZONES 102 AND 103): /NOTICE/ THE AFTERNOON FIRE WEATHER
ZONES SYNOPSIS AND FORECAST ARE AUTOMATICALLY GENERATED THROUGH LATE
SPRING. TAKING A QUICK LOOK AT THE NEXT 48 HOURS... TONIGHT'S
WEATHER, MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS UNTIL MIDNIGHT,
THEN CHANCE OF RAIN SHOWERS AND AREAS OF SNOW AFTER MIDNIGHT.
SATURDAY, RAIN AND SNOW LIKELY IN THE MORNING, THEN RAIN SHOWERS,
SNOW SHOWERS LIKELY AND A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. IT'LL BE MUCH COOLER. SNOW LEVEL 4500 FEET. SATURDAY
NIGHT, CHANCE OF RAIN SHOWERS. SNOW SHOWERS LIKELY AND A SLIGHT
CHANCE OF THUNDERSTORMS UNTIL MIDNIGHT, THEN SNOW LIKELY AFTER
MIDNIGHT. SNOW LEVEL 4500 FEET. SUNDAY, RAIN AND SNOW LIKELY IN THE
MORNING, THEN SNOW SHOWERS LIKELY WITH POSSIBLE SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. SNOW LEVEL 4500 FEET.
NORTHWEST MT (ZONES 104 AND 105): /NOTICE/ THE AFTERNOON FIRE
WEATHER ZONES SYNOPSIS AND FORECAST ARE AUTOMATICALLY GENERATED
THROUGH LATE SPRING. TAKING A QUICK LOOK AT THE NEXT 48 HOURS...
TONIGHT'S WEATHER, MOSTLY CLOUDY WITH A SLIGHT CHANCE OF RAIN. AREAS
OF SNOW. SATURDAY, RAIN AND SNOW LIKELY IN THE MORNING, THEN SNOW
SHOWERS, RAIN SHOWERS LIKELY AND A SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. IT'LL BE COOLER. SNOW LEVEL 4500 FEET. SATURDAY
NIGHT, MOSTLY CLOUDY WITH A CHANCE OF SNOW AND A SLIGHT CHANCE OF
RAIN. SUNDAY, MOSTLY CLOUDY WITH A CHANCE OF RAIN AND SNOW. SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HUMIDITIES WILL BE A LITTLE
LOWER.
WEST CENTRAL MT (ZONES 106, 107 AND 108): /NOTICE/ THE AFTERNOON
FIRE WEATHER ZONES SYNOPSIS AND FORECAST ARE AUTOMATICALLY GENERATED
THROUGH LATE SPRING. TAKING A QUICK LOOK AT THE NEXT 48 HOURS...
TONIGHT'S WEATHER, MOSTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN AND
SNOW AFTER MIDNIGHT. SATURDAY, A CHANCE OF RAIN AND SNOW IN THE
MORNING, THEN RAIN SHOWERS LIKELY WITH POSSIBLE SNOW SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. IT'LL BE MUCH COOLER. HUMIDITIES WILL
BE HIGHER. SATURDAY NIGHT, MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
RAIN AND SNOW. SUNDAY, SNOW WITH RAIN LIKELY IN THE MORNING, THEN
RAIN SHOWERS, SNOW SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
SOUTHWEST MT (ZONES 109, 110 AND 111): /NOTICE/ THE AFTERNOON FIRE
WEATHER ZONES SYNOPSIS AND FORECAST ARE AUTOMATICALLY GENERATED
THROUGH LATE SPRING. TAKING A QUICK LOOK AT THE NEXT 48 HOURS...
TONIGHT'S WEATHER, MOSTLY CLOUDY. A 20 PERCENT CHANCE OF SNOW AFTER
MIDNIGHT. SATURDAY, SNOW LIKELY AND A SLIGHT CHANCE OF RAIN IN THE
MORNING, THEN CHANCE OF RAIN SHOWERS, SNOW SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. IT'LL BE MUCH COOLER.
HUMIDITIES WILL BE HIGHER. SATURDAY NIGHT, MOSTLY CLOUDY WITH A
CHANCE OF SNOW. A CHANCE OF RAIN UNTIL MIDNIGHT. SUNDAY, A CHANCE OF
SNOW IN THE MORNING, THEN SNOW SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. IT'LL BE COOLER.
IDZ102-103-161000-
PALOUSE/HELLS CANYON-CLEARWATER/NEZ PERCE-
102 PM PDT FRI MAY 15 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF RAIN SHOWERS. CHANCE
OF SNOW AFTER MIDNIGHT. SNOW LEVEL 5500 FEET.
* MIN TEMPERATURE.....30-40.
* MAX HUMIDITY........74-84 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 10-15 MPH.
* RIDGE TOP............WEST 10-15 MPH.
* MIXING HEIGHT.......5 KFT AGL UNTIL 2000. BELOW 500 FT TO 1 KFT
AGL AFTER 2100.
* TRANSPORT WINDS.....WEST 15 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...10 PERCENT OVER THE PALOUSE/HELLS
CANYON...AND 30 PERCENT TOWARD THE CLEARWATER/NEZ PERCE.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY. SNOW AND RAIN IN THE MORNING,
THEN RAIN SHOWERS, SNOW SHOWERS LIKELY AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. SNOW LEVEL 4500 FEET.
* MAX TEMPERATURE.....48-58 VALLEYS AND 35-40 RIDGES.
* MIN HUMIDITY........54-64 PERCENT VALLEYS AND 64-74 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 10-20 MPH.
* RIDGE TOP............WEST 10-20 MPH.
* MIXING HEIGHT.......2 KFT AGL UNTIL 0900. 7 KFT AGL AFTER 1200.
* TRANSPORT WINDS.....WEST 15 MPH UNTIL 1200, THEN 20 MPH.
* CHANCE LIGHTNING....30 PERCENT OVER THE PALOUSE/HELLS
CANYON...AND 25 PERCENT TOWARD THE CLEARWATER/NEZ PERCE.
* CWR (> 0.10 INCH)...40 PERCENT OVER THE PALOUSE/HELLS
CANYON...AND 70 PERCENT TOWARD THE CLEARWATER/NEZ PERCE.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SNOW SHOWERS LIKELY AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING. CHANCE OF RAIN SHOWERS.
SNOW LIKELY AFTER MIDNIGHT. SNOW LEVEL 4500 FEET.
* MIN TEMPERATURE.....25-35.
* MAX HUMIDITY........76-86 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......VARIABLE LESS THAN 5 MPH IN THE EVENING
BECOMING DOWNSLOPE/DOWNVALLEY 1-3 MPH.
* RIDGE TOP............WEST 5-15 MPH.
* MIXING HEIGHT.......4 KFT AGL UNTIL 2000. BELOW 500 FT TO 1 KFT
AGL AFTER 2100.
* TRANSPORT WINDS.....WEST 15 MPH UNTIL 0100, THEN 10 MPH.
* CHANCE LIGHTNING....20 PERCENT OVER THE PALOUSE/HELLS
CANYON...AND 15 PERCENT TOWARD THE CLEARWATER/NEZ PERCE.
* CWR (> 0.10 INCH)...20 PERCENT OVER THE PALOUSE/HELLS
CANYON...AND 40 PERCENT TOWARD THE CLEARWATER/NEZ PERCE.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY. SNOW AND RAIN IN THE MORNING,
THEN SNOW SHOWERS WITH POSSIBLE RAIN SHOWERS AND THUNDERSTORMS IN
THE AFTERNOON. SNOW LEVEL 4500 FEET.
* MAX TEMPERATURE.....50-60 VALLEYS AND 35-45 RIDGES.
* MIN HUMIDITY........57-67 PERCENT VALLEYS AND 70-80 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTHWEST 5-15 MPH.
* RIDGE TOP............NORTHWEST 5-15 MPH.
* MIXING HEIGHT.......2 KFT AGL UNTIL 1000. 5 KFT AGL AFTER 1600.
* TRANSPORT WINDS.....NORTHWEST 10 MPH UNTIL 1600, THEN 10 MPH.
* CHANCE LIGHTNING....20 PERCENT.
* CWR (> 0.10 INCH)...20 PERCENT.
MONDAY
PARTLY CLOUDY. LOWS 30-40. HIGHS 55-65. MIN HUMIDITIES
30-40 PERCENT. NORTH WINDS 10-15 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 35-45. HIGHS 60-70. MIN HUMIDITIES
30-40 PERCENT. WEST WINDS 5-10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 40-50. HIGHS 65-75. SOUTHWEST WINDS
5-10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 40-50. HIGHS 65-75.
FRIDAY
PARTLY CLOUDY. LOWS 40-50. HIGHS 65-75.
MTZ104-105-161000-
KOOTENAI-FLATHEAD/GLACIER PARK-
202 PM MDT FRI MAY 15 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SNOW AND SLIGHT
CHANCE OF RAIN. SNOW LEVEL 5000 FEET.
* MIN TEMPERATURE.....30-35.
* MAX HUMIDITY........91-100 PERCENT VALLEYS AND 75-85 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 5-10 MPH BECOMING VARIABLE LESS
THAN 5 MPH AFTER MIDNIGHT.
* RIDGE TOP............SOUTHWEST 20-30 MPH.
* MIXING HEIGHT.......5 KFT AGL UNTIL 2000. BELOW 500 FT TO 1 KFT
AGL AFTER 2100.
* TRANSPORT WINDS.....SOUTHWEST 20 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...20 PERCENT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY. SNOW AND RAIN LIKELY IN THE
MORNING, THEN SNOW SHOWERS, RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. SNOW LEVEL 4500 FEET.
* MAX TEMPERATURE.....50-55 VALLEYS AND 35-45 RIDGES.
* MIN HUMIDITY........44-54 PERCENT VALLEYS AND 62-72 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 10-20 MPH.
* RIDGE TOP............SOUTHWEST 10-20 MPH.
* MIXING HEIGHT.......2 KFT AGL UNTIL 0900. 6 KFT AGL AFTER 1200.
* TRANSPORT WINDS.....SOUTHWEST 15 MPH UNTIL 1300, THEN WEST 20
MPH.
* CHANCE LIGHTNING....25 PERCENT.
* CWR (> 0.10 INCH)...50 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW AND SLIGHT
CHANCE OF RAIN. SNOW LEVEL 4500 FEET.
* MIN TEMPERATURE.....25-35.
* MAX HUMIDITY........96-100 PERCENT VALLEYS AND 83-93 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......VARIABLE LESS THAN 5 MPH IN THE EVENING
BECOMING DOWNSLOPE/DOWNVALLEY 1-3 MPH.
* RIDGE TOP............WEST 10-20 MPH DECREASING TO 5-10 MPH AFTER
MIDNIGHT.
* MIXING HEIGHT.......3 KFT AGL UNTIL 2100, THEN BELOW 500 FT TO 1
KFT AGL.
* TRANSPORT WINDS.....WEST 15 MPH UNTIL 0400, THEN NORTHWEST 10
MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT OVER THE KOOTENAI...AND 20
PERCENT TOWARD THE FLATHEAD/GLACIER PARK.
* CWR (> 0.10 INCH)...20 PERCENT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW AND RAIN.
SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. SNOW LEVEL 4500
FEET.
* MAX TEMPERATURE.....50-60 VALLEYS AND 38-48 RIDGES.
* MIN HUMIDITY........31-41 PERCENT VALLEYS AND 59-69 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTH 10-15 MPH.
* RIDGE TOP............NORTH 10-20 MPH.
* MIXING HEIGHT.......2 KFT AGL UNTIL 0900. 8 KFT AGL AFTER 1400.
* TRANSPORT WINDS.....NORTH 15 MPH.
* CHANCE LIGHTNING....20 PERCENT.
* CWR (> 0.10 INCH)...10 PERCENT OVER THE KOOTENAI...AND 30 PERCENT
TOWARD THE FLATHEAD/GLACIER PARK.
MONDAY
PARTLY CLOUDY. LOWS 30-40. HIGHS 50-60. MIN HUMIDITIES
30-40 PERCENT. NORTH WINDS 10-15 MPH.
TUESDAY
PARTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. CHANCE OF PRECIPITATION 30 PERCENT. LOWS 30-40. HIGHS
55-65. MIN HUMIDITIES 35-45 PERCENT. SOUTHWEST WINDS 10-15 MPH.
WEDNESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN. CHANCE OF RAIN
20 PERCENT. LOWS 35-45. HIGHS 60-70. SOUTHWEST WINDS 10-15 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 40-50. HIGHS 60-70.
FRIDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN. CHANCE OF RAIN
20 PERCENT. LOWS 40-50. HIGHS 60-70.
MTZ106-108-161000-
WEST LOLO-EAST LOLO-
202 PM MDT FRI MAY 15 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SNOW AFTER
MIDNIGHT. SNOW LEVEL 5500 FEET.
* MIN TEMPERATURE.....30-35.
* MAX HUMIDITY........84-94 PERCENT VALLEYS AND 72-82 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 10-20 MPH.
* RIDGE TOP............WEST 20-30 MPH DECREASING TO 10-20 MPH AFTER
MIDNIGHT.
* MIXING HEIGHT.......6 KFT AGL UNTIL 2000. BELOW 500 FT TO 1 KFT
AGL AFTER 2100.
* TRANSPORT WINDS.....WEST 20 MPH UNTIL 0100, THEN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...10 PERCENT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW AND RAIN IN THE
MORNING, THEN CHANCE OF RAIN SHOWERS, SNOW SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. SNOW LEVEL 5000 FEET.
* MAX TEMPERATURE.....45-55 VALLEYS AND 35-45 RIDGES.
* MIN HUMIDITY........43-53 PERCENT VALLEYS AND 58-68 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 10-20 MPH.
* RIDGE TOP............WEST 15-25 MPH.
* MIXING HEIGHT.......2 KFT AGL UNTIL 0900. 7 KFT AGL AFTER 1200.
* TRANSPORT WINDS.....WEST 15 MPH UNTIL 1200, THEN 20 MPH.
* CHANCE LIGHTNING....25 PERCENT OVER THE WEST LOLO...AND 20
PERCENT TOWARD THE EAST LOLO.
* CWR (> 0.10 INCH)...50 PERCENT OVER THE WEST LOLO...AND 20
PERCENT TOWARD THE EAST LOLO.
SATURDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF RAIN AND
SNOW. SNOW LEVEL 4000 FEET.
* MIN TEMPERATURE.....25-35.
* MAX HUMIDITY........86-96 PERCENT VALLEYS AND 76-86 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 5-10 MPH.
* RIDGE TOP............WEST 15-25 MPH DECREASING TO 5-15 MPH AFTER
MIDNIGHT.
* MIXING HEIGHT.......5 KFT AGL UNTIL 2100, THEN BELOW 500 FT TO 1
KFT AGL.
* TRANSPORT WINDS.....WEST 20 MPH UNTIL 2200, THEN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...10 PERCENT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY. SNOW LIKELY AND RAIN IN THE
MORNING, THEN SNOW SHOWERS, RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. SNOW LEVEL 4500 FEET.
* MAX TEMPERATURE.....45-55 VALLEYS AND 38-48 RIDGES.
* MIN HUMIDITY........43-53 PERCENT VALLEYS AND 63-73 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTHWEST 5-15 MPH.
* RIDGE TOP............NORTHWEST 5-15 MPH.
* MIXING HEIGHT.......2 KFT AGL UNTIL 0900. 6 KFT AGL AFTER 1100.
* TRANSPORT WINDS.....NORTHWEST 10 MPH UNTIL 1100, THEN NORTH 15
MPH.
* CHANCE LIGHTNING....20 PERCENT OVER THE WEST LOLO...AND 25
PERCENT TOWARD THE EAST LOLO.
* CWR (> 0.10 INCH)...20 PERCENT OVER THE WEST LOLO...AND 50
PERCENT TOWARD THE EAST LOLO.
MONDAY
PARTLY CLOUDY WITH CHANCE OF RAIN AND SNOW. CHANCE OF
PRECIPITATION 30 PERCENT. LOWS 30-40. HIGHS 50-60. MIN HUMIDITIES
30-40 PERCENT. NORTH WINDS 10-15 MPH.
TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND
THUNDERSTORMS. CHANCE OF PRECIPITATION 20 PERCENT. LOWS 30-40. HIGHS
55-65. MIN HUMIDITIES 25-35 PERCENT. WEST WINDS 5-10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 35-45. HIGHS 60-70. WEST WINDS
10-15 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 40-50. HIGHS 65-75.
FRIDAY
PARTLY CLOUDY. LOWS 40-50. HIGHS 65-75.
MTZ107-161000-
FLATHEAD RESERVATION-
202 PM MDT FRI MAY 15 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW AFTER
MIDNIGHT. SNOW LEVEL 5000 FEET.
* MIN TEMPERATURE.....30-40.
* MAX HUMIDITY........71-81 PERCENT VALLEYS AND 85-95 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 10-20 MPH.
* RIDGE TOP............WEST 20-30 MPH DECREASING TO 10-20 MPH AFTER
MIDNIGHT.
* MIXING HEIGHT.......6 KFT AGL UNTIL 2000. BELOW 500 FT TO 1 KFT
AGL AFTER 2100.
* TRANSPORT WINDS.....WEST 20 MPH UNTIL 2400, THEN SOUTHWEST 10
MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...10 PERCENT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY. SNOW LIKELY AND CHANCE OF RAIN
IN THE MORNING, THEN RAIN SHOWERS, SNOW SHOWERS LIKELY AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. SNOW LEVEL 4500 FEET.
* MAX TEMPERATURE.....55-60 VALLEYS AND 30-35 RIDGES.
* MIN HUMIDITY........44-54 PERCENT VALLEYS AND 68-78 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 10-20 MPH.
* RIDGE TOP............SOUTHWEST 15-25 MPH.
* MIXING HEIGHT.......3 KFT AGL UNTIL 0900. 7 KFT AGL AFTER 1700.
* TRANSPORT WINDS.....SOUTHWEST 15 MPH UNTIL 1300, THEN WEST 20
MPH.
* CHANCE LIGHTNING....25 PERCENT.
* CWR (> 0.10 INCH)...20 PERCENT OVER AREAS WEST OF HIGHWAY
93...AND 40 PERCENT TOWARD THE MISSION MTNS AND AREAS EAST OF
HIGHWAY 93.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN AND
SNOW. SNOW LEVEL 4500 FEET.
* MIN TEMPERATURE.....30-35.
* MAX HUMIDITY........79-89 PERCENT VALLEYS AND 92 PERCENT RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 5-15 MPH DECREASING TO VARIABLE
LESS THAN 5 MPH AFTER MIDNIGHT.
* RIDGE TOP............WEST 15-25 MPH DECREASING TO 5-15 MPH AFTER
MIDNIGHT.
* MIXING HEIGHT.......5 KFT AGL UNTIL 2000. BELOW 500 FT TO 1 KFT
AGL AFTER 2100.
* TRANSPORT WINDS.....SOUTHWEST 15 MPH UNTIL 0100, THEN VARIABLE
LESS THAN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT OVER AREAS WEST OF HIGHWAY 93...AND
20 PERCENT TOWARD THE MISSION MTNS AND AREAS EAST OF HIGHWAY 93.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY. SNOW WITH RAIN LIKELY IN THE
MORNING, THEN CHANCE OF RAIN SHOWERS WITH POSSIBLE SNOW SHOWERS
AND THUNDERSTORMS LIKELY IN THE AFTERNOON. SNOW LEVEL 4500 FEET.
* MAX TEMPERATURE.....55-60 VALLEYS AND 30-35 RIDGES.
* MIN HUMIDITY........44-54 PERCENT VALLEYS AND 60-70 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTHWEST 5-15 MPH.
* RIDGE TOP............NORTHWEST 5-15 MPH INCREASING TO 15-25 MPH
IN THE AFTERNOON.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 0900. 7 KFT AGL AFTER 1400.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 0900, THEN
NORTH 15 MPH.
* CHANCE LIGHTNING....15 PERCENT OVER AREAS WEST OF HIGHWAY
93...AND 20 PERCENT TOWARD THE MISSION MTNS AND AREAS EAST OF
HIGHWAY 93.
* CWR (> 0.10 INCH)...20 PERCENT.
MONDAY
PARTLY CLOUDY. LOWS 30-40. HIGHS 55-65. MIN HUMIDITIES
30-40 PERCENT. NORTH WINDS 10-15 MPH.
TUESDAY
PARTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. CHANCE OF PRECIPITATION 30 PERCENT. LOWS 35-45. HIGHS
60-70. MIN HUMIDITIES 30-40 PERCENT. SOUTHWEST WINDS 5-10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 40-50. HIGHS 65-75. SOUTHWEST WINDS
10-15 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 40-50. HIGHS 65-75.
FRIDAY
PARTLY CLOUDY. LOWS 45-55. HIGHS 65-75.
MTZ109-161000-
BITTERROOT-
202 PM MDT FRI MAY 15 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SNOW AFTER
MIDNIGHT. SNOW LEVEL 6000 FEET.
* MIN TEMPERATURE.....30-40.
* MAX HUMIDITY........77-87 PERCENT VALLEYS AND 71-81 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTHWEST 10-15 MPH BECOMING VARIABLE LESS
THAN 5 MPH AFTER MIDNIGHT.
* RIDGE TOP............WEST 15-25 MPH DECREASING TO 10-15 MPH AFTER
MIDNIGHT.
* MIXING HEIGHT.......7 KFT AGL UNTIL 1900. BELOW 500 FT TO 1 KFT
AGL AFTER 2100.
* TRANSPORT WINDS.....WEST 20 MPH UNTIL 2100, THEN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...10 PERCENT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY. SNOW AND RAIN LIKELY IN THE
MORNING, THEN CHANCE OF SNOW SHOWERS, RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. SNOW LEVEL 5000 FEET.
* MAX TEMPERATURE.....50-55 VALLEYS AND 35-40 RIDGES.
* MIN HUMIDITY........32-42 PERCENT VALLEYS AND 54-64 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING 5-15 MPH IN THE AFTERNOON.
* RIDGE TOP............WEST 15-25 MPH.
* MIXING HEIGHT.......3 KFT AGL UNTIL 1000. 6 KFT AGL AFTER 1300.
* TRANSPORT WINDS.....WEST 10 MPH UNTIL 1000, THEN 20 MPH.
* CHANCE LIGHTNING....20 PERCENT.
* CWR (> 0.10 INCH)...40 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN IN THE
EVENING. CHANCE OF SNOW. SNOW LEVEL 4000 FEET.
* MIN TEMPERATURE.....20-30.
* MAX HUMIDITY........71-81 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 5-15 MPH BECOMING VARIABLE LESS THAN 5
MPH AFTER MIDNIGHT.
* RIDGE TOP............WEST 15-25 MPH DECREASING TO 10-15 MPH AFTER
MIDNIGHT.
* MIXING HEIGHT.......5 KFT AGL UNTIL 2000. BELOW 500 FT TO 1 KFT
AGL AFTER 2100.
* TRANSPORT WINDS.....WEST 20 MPH UNTIL 2100, THEN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...20 PERCENT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY. SNOW LIKELY IN THE MORNING,
THEN SNOW SHOWERS, RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. SNOW LEVEL 4500 FEET.
* MAX TEMPERATURE.....50-55 VALLEYS AND 35-40 RIDGES.
* MIN HUMIDITY........43-53 PERCENT VALLEYS AND 65-75 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING NORTHWEST 5-15 MPH IN THE
AFTERNOON.
* RIDGE TOP............NORTHWEST 10-20 MPH.
* MIXING HEIGHT.......2 KFT AGL UNTIL 0900, THEN 5 KFT AGL UNTIL
1100, THEN 7 KFT AGL UNTIL 1700, THEN 5 KFT AGL.
* TRANSPORT WINDS.....NORTHWEST 10 MPH UNTIL 1100, THEN NORTH 15
MPH.
* CHANCE LIGHTNING....25 PERCENT.
* CWR (> 0.10 INCH)...40 PERCENT.
MONDAY
PARTLY CLOUDY WITH CHANCE OF SNOW. CHANCE OF SNOW 40 PERCENT.
LOWS 30-40. HIGHS 45-55. MIN HUMIDITIES 25-35 PERCENT. NORTH WINDS
10-20 MPH.
TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND
THUNDERSTORMS. CHANCE OF PRECIPITATION 20 PERCENT. LOWS 30-40. HIGHS
50-60. MIN HUMIDITIES 25-35 PERCENT. WEST WINDS 5-10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 35-45. HIGHS 55-65. WEST WINDS
10-15 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 35-45. HIGHS 60-70.
FRIDAY
PARTLY CLOUDY. LOWS 40-50. HIGHS 65-75.
MTZ110-111-161000-
DEERLODGE/WEST BEAVERHEAD-EAST BEAVERHEAD-
202 PM MDT FRI MAY 15 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....30-40.
* MAX HUMIDITY........64-74 PERCENT VALLEYS AND 53-63 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTHWEST 10-15 MPH BECOMING VARIABLE LESS
THAN 5 MPH AFTER MIDNIGHT.
* RIDGE TOP............WEST 10-20 MPH.
* MIXING HEIGHT.......9 KFT AGL UNTIL 2000. BELOW 500 FT TO 1 KFT
AGL AFTER 2100.
* TRANSPORT WINDS.....WEST 20 MPH UNTIL 2100, THEN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW IN THE MORNING.
CHANCE OF SNOW SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. SNOW LEVEL 6500 FEET.
* MAX TEMPERATURE.....48-58 VALLEYS AND 40-50 RIDGES.
* MIN HUMIDITY........34-44 PERCENT VALLEYS AND 43-53 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 15-25 MPH.
* RIDGE TOP............WEST 15-25 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL UNTIL 0800. 8 KFT
AGL AFTER 1400.
* TRANSPORT WINDS.....SOUTHWEST 10 MPH UNTIL 0900, THEN WEST 20
MPH.
* CHANCE LIGHTNING....20 PERCENT.
* CWR (> 0.10 INCH)...10 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN IN THE EVENING.
CHANCE OF SNOW. SNOW LEVEL 5000 FEET.
* MIN TEMPERATURE.....20-30.
* MAX HUMIDITY........79-89 PERCENT VALLEYS AND 70-80 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTHWEST 10-20 MPH BECOMING WEST 5-10 MPH
AFTER MIDNIGHT.
* RIDGE TOP............NORTHWEST 20-30 MPH.
* MIXING HEIGHT.......6 KFT AGL UNTIL 2000. 1-2 KFT AGL AFTER 0100.
* TRANSPORT WINDS.....NORTHWEST 20 MPH UNTIL 0100, THEN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...10 PERCENT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW IN THE MORNING,
THEN SNOW SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
* MAX TEMPERATURE.....40-50 VALLEYS AND 30-35 RIDGES.
* MIN HUMIDITY........44-54 PERCENT VALLEYS AND 52-62 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING NORTH 15-25 MPH IN THE
AFTERNOON.
* RIDGE TOP............NORTHWEST 15-25 MPH.
* MIXING HEIGHT.......3 KFT AGL UNTIL 0800. 8 KFT AGL AFTER 1200.
* TRANSPORT WINDS.....NORTHWEST 15 MPH UNTIL 1400, THEN NORTH 20
MPH.
* CHANCE LIGHTNING....25 PERCENT OVER THE DEERLODGE/WEST
BEAVERHEAD...AND 20 PERCENT TOWARD THE EAST BEAVERHEAD.
* CWR (> 0.10 INCH)...40 PERCENT OVER THE DEERLODGE/WEST
BEAVERHEAD...AND 20 PERCENT TOWARD THE EAST BEAVERHEAD.
MONDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW AND SLIGHT CHANCE OF
THUNDERSTORMS. CHANCE OF PRECIPITATION 30 PERCENT. LOWS 25-35. HIGHS
40-50. MIN HUMIDITIES 25-35 PERCENT. NORTH WINDS 20-30 MPH.
TUESDAY
PARTLY CLOUDY WITH CHANCE OF SNOW SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. CHANCE OF PRECIPITATION 30 PERCENT. LOWS 25-35. HIGHS
50-60. MIN HUMIDITIES 20-30 PERCENT. WEST WINDS 10-20 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 30-40. HIGHS 55-65. WEST WINDS
10-15 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 35-45. HIGHS 60-70.
FRIDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND
THUNDERSTORMS. CHANCE OF PRECIPITATION 20 PERCENT. LOWS 35-45. HIGHS
60-70.
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