074
FNUS55 KMSO 300938
FWFMSO
FIRE WEATHER PLANNING FORECAST FOR WRN MONTANA AND N CNTRL IDAHO
NATIONAL WEATHER SERVICE MISSOULA MT
338 AM MDT THU APR 30 2026
DISCUSSION
IDAHO (ZONES 102 AND 103): A RIDGE OF HIGH PRESSURE WILL BE BUILDING
OVER THE AREA TODAY INTO FRIDAY CAUSING WARM AND DRY CONDITIONS.
ISOLATED SHOWERS COULD DEVELOP ACROSS SOUTHERN 102/103 SATURDAY AND
SUNDAY AFTERNOON.
NORTHWEST MT (ZONES 104 AND 105): A RIDGE OF HIGH PRESSURE WILL BE
BUILDING OVER THE AREA TODAY INTO FRIDAY CAUSING WARM AND DRY
CONDITIONS. A WEAK DISTURBANCE WILL DROP INTO THE AREA FROM THE NORTH
DURING THE WEEKEND BRINGING IN SLIGHTLY COOLER AIR ALONG WITH
NORTHEASTERLY WINDS AND ISOLATED SHOWERS.
WEST CENTRAL MT (ZONES 106, 107 AND 108): A RIDGE OF HIGH PRESSURE WILL BE
BUILDING OVER THE AREA TODAY INTO FRIDAY CAUSING WARM AND DRY
CONDITIONS. A WEAK DISTURBANCE WILL DROP INTO THE AREA FROM THE NORTH
DURING THE WEEKEND BRINGING IN SLIGHTLY COOLER AIR ALONG WITH
NORTHEASTERLY WINDS.
SOUTHWEST MT (ZONES 109, 110 AND 111): A RIDGE OF HIGH PRESSURE WILL BE
BUILDING OVER THE AREA TODAY INTO FRIDAY CAUSING WARM AND DRY
CONDITIONS. A WEAK DISTURBANCE WILL DROP INTO THE AREA FROM THE NORTH
DURING THE WEEKEND BRINGING IN SLIGHTLY COOLER AIR ALONG WITH GUSTY
NORTHEASTERLY WINDS. SCATTERED SHOWERS ARE EXPECTED TO DEVELOP SUNDAY
AFTERNOON.
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IDZ102-103-010945-
PALOUSE/HELLS CANYON-CLEARWATER/NEZ PERCE-
238 AM PDT THU APR 30 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....65-75 VALLEYS AND 50-60 RIDGES.
* MIN HUMIDITY........24-34 PERCENT VALLEYS AND 30-40 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............EAST 5-10 MPH.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1000. 9 KFT AGL AFTER 1300.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT OVER THE PALOUSE/HELLS CANYON...AND
NEAR 0 PERCENT TOWARD THE CLEARWATER/NEZ PERCE.
* CWR (> 0.10 INCH)...0 PERCENT.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....33-43.
* MAX HUMIDITY........54-64 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTHEAST 5-10 MPH IN THE EVENING BECOMING
DOWNSLOPE/DOWNVALLEY 2-5 MPH.
* RIDGE TOP............NORTHEAST 5-10 MPH BECOMING SOUTHEAST AFTER
MIDNIGHT.
* MIXING HEIGHT.......7 KFT AGL UNTIL 1900. BELOW 500 FT TO 1 KFT
AGL AFTER 2000.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT OVER THE PALOUSE/HELLS CANYON...AND
NEAR 0 PERCENT TOWARD THE CLEARWATER/NEZ PERCE.
* CWR (> 0.10 INCH)...0 PERCENT.
FRIDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....73-83 VALLEYS AND 55-65 RIDGES.
* MIN HUMIDITY........19-29 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............SOUTH 5-10 MPH BECOMING SOUTHWEST IN THE
AFTERNOON.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1000. 8 KFT AGL AFTER 1400.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
SATURDAY
PARTLY CLOUDY. LOWS 45-55. HIGHS 70-80. MIN HUMIDITIES
15-25 PERCENT. SOUTHEAST WINDS 5-10 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 45-55. HIGHS 70-80. MIN HUMIDITIES
20-30 PERCENT. NORTHEAST WINDS 5-10 MPH.
MONDAY
MOSTLY CLEAR. LOWS 45-55. HIGHS 70-80. NORTHEAST WINDS
5-10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 45-55. HIGHS 70-80.
WEDNESDAY
MOSTLY CLEAR. LOWS 45-55. HIGHS 65-75.
MTZ104-105-010945-
KOOTENAI-FLATHEAD/GLACIER PARK-
338 AM MDT THU APR 30 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....65-75 VALLEYS AND 50-60 RIDGES.
* MIN HUMIDITY........22-32 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............NORTHWEST 5-10 MPH.
* MIXING HEIGHT.......2 KFT AGL UNTIL 1000. 8 KFT AGL AFTER 1300.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT OVER THE KOOTENAI...AND NEAR 0
PERCENT TOWARD THE FLATHEAD/GLACIER PARK.
* CWR (> 0.10 INCH)...0 PERCENT.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....30-40.
* MAX HUMIDITY........75-85 PERCENT VALLEYS AND 63-73 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 1-3 MPH.
* RIDGE TOP............SOUTHWEST 5-10 MPH.
* MIXING HEIGHT.......6 KFT AGL UNTIL 2000, THEN BELOW 500 FT TO 1
KFT AGL.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
FRIDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....70-75 VALLEYS AND 53-63 RIDGES.
* MIN HUMIDITY........14-24 PERCENT VALLEYS AND 31-41 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............SOUTHWEST 5-15 MPH.
* MIXING HEIGHT.......2 KFT AGL UNTIL 1000. 9 KFT AGL AFTER 1400.
* TRANSPORT WINDS.....SOUTHWEST 10 MPH.
* CHANCE LIGHTNING....0 PERCENT OVER THE KOOTENAI...AND NEAR 0
PERCENT TOWARD THE FLATHEAD/GLACIER PARK.
* CWR (> 0.10 INCH)...0 PERCENT.
SATURDAY
PARTLY CLOUDY. LOWS 40-50. HIGHS 65-75. MIN HUMIDITIES
20-30 PERCENT. EAST WINDS 10-15 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN. CHANCE OF RAIN
20 PERCENT. LOWS 40-50. HIGHS 65-75. MIN HUMIDITIES 20-30 PERCENT.
NORTHEAST WINDS 10-15 MPH.
MONDAY
MOSTLY CLEAR. LOWS 40-50. HIGHS 65-75. NORTHEAST WINDS
5-10 MPH.
TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN. CHANCE OF RAIN
20 PERCENT. LOWS 40-50. HIGHS 65-75.
WEDNESDAY
MOSTLY CLEAR. LOWS 40-50. HIGHS 65-75.
MTZ106-108-010945-
WEST LOLO-EAST LOLO-
338 AM MDT THU APR 30 2026
TODAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....60-70 VALLEYS AND 53-63 RIDGES.
* MIN HUMIDITY........25-35 PERCENT VALLEYS AND 31-41 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO VARIABLE LESS THAN 7 MPH.
* RIDGE TOP............NORTHEAST 5-10 MPH.
* MIXING HEIGHT.......2 KFT AGL UNTIL 1000. 9 KFT AGL AFTER 1300.
* 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.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....30-40.
* MAX HUMIDITY........65-75 PERCENT VALLEYS AND 59-69 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 2-5 MPH.
* RIDGE TOP............NORTHEAST 5-15 MPH BECOMING SOUTH 5-10 MPH
AFTER MIDNIGHT.
* MIXING HEIGHT.......6 KFT AGL UNTIL 2000, THEN BELOW 500 FT TO 1
KFT AGL.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
FRIDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....65-75 VALLEYS AND 58-68 RIDGES.
* MIN HUMIDITY........13-23 PERCENT VALLEYS AND 24-34 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............SOUTHWEST 5-10 MPH.
* MIXING HEIGHT.......2 KFT AGL UNTIL 1000. 9 KFT AGL AFTER 1400.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 1200, THEN
WEST 10 MPH.
* CHANCE LIGHTNING....0 PERCENT OVER THE WEST LOLO...AND NEAR 0
PERCENT TOWARD THE EAST LOLO.
* CWR (> 0.10 INCH)...0 PERCENT.
SATURDAY
PARTLY CLOUDY. LOWS 40-50. HIGHS 65-75. MIN HUMIDITIES
20-30 PERCENT. SOUTHEAST WINDS 5-10 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 40-50. HIGHS 65-75. MIN HUMIDITIES
25-35 PERCENT. NORTHEAST WINDS 5-10 MPH.
MONDAY
MOSTLY CLEAR. LOWS 40-50. HIGHS 65-75. NORTHEAST WINDS
5-10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 40-50. HIGHS 65-75.
WEDNESDAY
PARTLY CLOUDY. LOWS 40-50. HIGHS 65-75.
MTZ107-010945-
FLATHEAD RESERVATION-
338 AM MDT THU APR 30 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....65-70 VALLEYS AND 45-50 RIDGES.
* MIN HUMIDITY........25-35 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............NORTH 5-15 MPH.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1000. 8 KFT AGL AFTER 1300.
* 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.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....35-40.
* MAX HUMIDITY........55-65 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 1-3 MPH.
* RIDGE TOP............NORTHEAST 5-15 MPH BECOMING SOUTH AFTER
MIDNIGHT.
* MIXING HEIGHT.......7 KFT AGL UNTIL 1900. BELOW 500 FT TO 1 KFT
AGL AFTER 2000.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
FRIDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....70-75 VALLEYS AND 50-55 RIDGES.
* MIN HUMIDITY........21-31 PERCENT VALLEYS AND 27-37 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............SOUTH 5-15 MPH BECOMING WEST IN THE
AFTERNOON.
* MIXING HEIGHT.......3 KFT AGL UNTIL 1100. 8 KFT AGL AFTER 1300.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 1400, THEN
SOUTHWEST 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.
SATURDAY
PARTLY CLOUDY. LOWS 45-55. HIGHS 70-80. MIN HUMIDITIES
25-35 PERCENT. EAST WINDS 5-10 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 45-55. HIGHS 70-80. MIN HUMIDITIES
25-35 PERCENT. NORTHEAST WINDS 5-10 MPH.
MONDAY
MOSTLY CLEAR. LOWS 45-55. HIGHS 70-80. NORTHEAST WINDS
5-10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 45-55. HIGHS 70-80.
WEDNESDAY
MOSTLY CLEAR. LOWS 45-55. HIGHS 65-75.
MTZ109-010945-
BITTERROOT-
338 AM MDT THU APR 30 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....65-70 VALLEYS AND 45-50 RIDGES.
* MIN HUMIDITY........19-29 PERCENT VALLEYS AND 32-42 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............EAST 5-10 MPH BECOMING NORTHEAST 10-15 MPH
IN THE AFTERNOON.
* MIXING HEIGHT.......2 KFT AGL UNTIL 1000. 8 KFT AGL AFTER 1300.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 1300, THEN
NORTHEAST 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....30-40.
* MAX HUMIDITY........63-73 PERCENT VALLEYS AND 56-66 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTH 5-10 MPH IN THE EVENING BECOMING
DOWNSLOPE/DOWNVALLEY 2-5 MPH.
* RIDGE TOP............NORTHEAST 10-15 MPH BECOMING SOUTHEAST 5-10
MPH AFTER MIDNIGHT.
* MIXING HEIGHT.......6 KFT AGL UNTIL 2000, THEN 1-2 KFT AGL.
* TRANSPORT WINDS.....NORTHEAST 10 MPH UNTIL 2400, THEN VARIABLE
LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
FRIDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....70-75 VALLEYS AND 55-60 RIDGES.
* MIN HUMIDITY........13-23 PERCENT VALLEYS AND 22-32 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............SOUTH 5-10 MPH BECOMING WEST IN THE
AFTERNOON.
* MIXING HEIGHT.......2 KFT AGL UNTIL 1000. 8 KFT AGL AFTER 1500.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT OVER THE DARBY, SULA, AND WEST
FORK DISTRICTS...AND 0 PERCENT TOWARD AREAS NORTH OF HAMILTON.
* CWR (> 0.10 INCH)...0 PERCENT.
SATURDAY
PARTLY CLOUDY. LOWS 40-50. HIGHS 65-75. MIN HUMIDITIES
15-25 PERCENT. SOUTH WINDS 5-10 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN. CHANCE OF RAIN
20 PERCENT. LOWS 40-50. HIGHS 65-75. MIN HUMIDITIES 20-30 PERCENT.
NORTHEAST WINDS 5-10 MPH.
MONDAY
PARTLY CLOUDY. LOWS 40-50. HIGHS 65-75. NORTHEAST WINDS
10-15 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 40-50. HIGHS 65-75.
WEDNESDAY
MOSTLY CLEAR. LOWS 40-50. HIGHS 60-70.
MTZ110-111-010945-
DEERLODGE/WEST BEAVERHEAD-EAST BEAVERHEAD-
338 AM MDT THU APR 30 2026
TODAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....55-60 VALLEYS AND 45-50 RIDGES.
* MIN HUMIDITY........24-34 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTH 10-15 MPH.
* RIDGE TOP............NORTH 5-15 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL UNTIL 0900. 9 KFT
AGL AFTER 1200.
* TRANSPORT WINDS.....NORTHEAST 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....25-35.
* MAX HUMIDITY........64-74 PERCENT VALLEYS AND 54-64 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTHEAST 10-15 MPH IN THE EVENING BECOMING
DOWNSLOPE/DOWNVALLEY 5-10 MPH.
* RIDGE TOP............NORTHEAST 10-15 MPH BECOMING SOUTHEAST 5-10
MPH AFTER MIDNIGHT.
* MIXING HEIGHT.......7 KFT AGL UNTIL 2000. BELOW 500 FT TO 1 KFT
AGL AFTER 2100.
* TRANSPORT WINDS.....NORTHEAST 10 MPH UNTIL 0100, THEN VARIABLE
LESS THAN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
FRIDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....65-70 VALLEYS AND 50-60 RIDGES.
* MIN HUMIDITY........12-22 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 1000. 8 KFT AGL AFTER 1400.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
SATURDAY
MOSTLY CLEAR. LOWS 35-45. HIGHS 60-70. MIN HUMIDITIES
10-20 PERCENT. SOUTH WINDS 10-15 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF RAIN SHOWERS. CHANCE OF SHOWERS
30 PERCENT. LOWS 40-50. HIGHS 60-70. MIN HUMIDITIES 20-30 PERCENT.
NORTHEAST WINDS 10-15 MPH.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN. CHANCE OF RAIN
20 PERCENT. LOWS 40-50. HIGHS 60-70. NORTHEAST WINDS 10-15 MPH.
TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN. CHANCE OF RAIN
20 PERCENT. LOWS 35-45. HIGHS 60-70.
WEDNESDAY
PARTLY CLOUDY. LOWS 35-45. HIGHS 60-70.
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