212
FNUS55 KMSO 040850
FWFMSO
FIRE WEATHER PLANNING FORECAST FOR WRN MONTANA AND N CNTRL IDAHO
NATIONAL WEATHER SERVICE MISSOULA MT
250 AM MDT TUE AUG 4 2026
DISCUSSION
IDAHO (ZONES 102, 103): REGIONAL WILDFIRE SMOKE WILL REMAIN THROUGH THE
NEXT SEVERAL DAYS UNDER A RELATIVELY STABLE AIR MASS. BUILDING HIGH
PRESSURE WILL BRING A GRADUAL WARMING AND DRYING TREND THROUGH THE REST
OF THE WEEK, THOUGH WINDS REMAIN LIGHT.
NORTHWEST MT (ZONES 104, 105): REGIONAL WILDFIRE SMOKE WILL REMAIN
THROUGH THE NEXT SEVERAL DAYS UNDER A RELATIVELY STABLE AIR MASS. A
NORTHEASTERLY GRADIENT TONIGHT MAY HELP THIN THE SMOKE SLIGHTLY.
BUILDING HIGH PRESSURE WILL BRING A GRADUAL WARMING AND DRYING TREND
THROUGH THE REST OF THE WEEK, THOUGH WINDS REMAIN RELATIVELY LIGHT.
WEST CENTRAL MT (ZONES 106, 107, 108): REGIONAL WILDFIRE SMOKE WILL
REMAIN THROUGH THE NEXT SEVERAL DAYS UNDER A RELATIVELY STABLE AIR MASS.
A NORTHEASTERLY GRADIENT TONIGHT MAY HELP THIN THE SMOKE SLIGHTLY.
BUILDING HIGH PRESSURE WILL BRING A GRADUAL WARMING AND DRYING TREND
THROUGH THE REST OF THE WEEK, THOUGH WINDS REMAIN LIGHT.
SOUTHWEST MT (ZONES 109, 110, 111): REGIONAL WILDFIRE SMOKE WILL REMAIN
THROUGH THE NEXT SEVERAL DAYS UNDER A RELATIVELY STABLE AIR MASS. A
NORTHEASTERLY GRADIENT TONIGHT MAY HELP THIN THE SMOKE SLIGHTLY.
BUILDING HIGH PRESSURE WILL BRING A GRADUAL WARMING AND DRYING TREND
THROUGH THE REST OF THE WEEK, THOUGH WINDS REMAIN LIGHT.
IDZ102-103-050900-
PALOUSE/HELLS CANYON-CLEARWATER/NEZ PERCE-
150 AM PDT TUE AUG 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY. AREAS OF SMOKE.
* MAX TEMPERATURE.....83-93 VALLEYS AND 70-75 RIDGES.
* MIN HUMIDITY........8-18 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............EAST 5-10 MPH BECOMING NORTHWEST IN THE
AFTERNOON.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL UNTIL 1000. 7 KFT
AGL AFTER 1300.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR. PATCHY SMOKE.
* MIN TEMPERATURE.....50-55 VALLEYS AND 43-53 RIDGES.
* MAX HUMIDITY........24-34 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 2-5 MPH.
* RIDGE TOP............NORTHWEST 5-15 MPH BECOMING EAST 5-10 MPH
AFTER MIDNIGHT.
* MIXING HEIGHT.......6 KFT AGL UNTIL 2000, THEN BELOW 500 FT TO 1
KFT AGL.
* TRANSPORT WINDS.....NORTHWEST 10 MPH UNTIL 2400, THEN VARIABLE
LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY. PATCHY SMOKE.
* MAX TEMPERATURE.....88-98 VALLEYS AND 75-85 RIDGES.
* MIN HUMIDITY........5-15 PERCENT.
* 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.......BELOW 500 FT TO 1 KFT AGL UNTIL 1000. 8 KFT
AGL AFTER 1400.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 1100, THEN
WEST 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
THURSDAY
CLEAR. LOWS 55-65. HIGHS 90-100. MIN HUMIDITIES
10-20 PERCENT. SOUTH WINDS 5-10 MPH.
FRIDAY
CLEAR. LOWS 60-70. HIGHS 90-100. MIN HUMIDITIES
15-25 PERCENT. SOUTHWEST WINDS 10-15 MPH.
SATURDAY
CLEAR. LOWS 60-70. HIGHS 85-95. WEST WINDS 10-15 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 55-65. HIGHS 80-90.
MONDAY
MOSTLY CLEAR. LOWS 55-65. HIGHS 80-90.
MTZ104-105-050900-
KOOTENAI-FLATHEAD/GLACIER PARK-
250 AM MDT TUE AUG 4 2026
TODAY
* SKY/WEATHER.........PARTLY CLOUDY. PATCHY SMOKE IN THE MORNING.
* MAX TEMPERATURE.....75-85 VALLEYS AND 60-70 RIDGES.
* MIN HUMIDITY........10-20 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............SOUTHEAST 5-10 MPH BECOMING WEST IN THE
AFTERNOON.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL UNTIL 0900. 8 KFT
AGL AFTER 1700.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 1300, THEN
WEST 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.....45-55.
* MAX HUMIDITY........71-81 PERCENT VALLEYS AND 43-53 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 2-5 MPH.
* RIDGE TOP............WEST 5-10 MPH.
* MIXING HEIGHT.......7 KFT AGL UNTIL 2000. BELOW 500 FT TO 1 KFT
AGL AFTER 2100.
* TRANSPORT WINDS.....WEST 10 MPH.
* CHANCE LIGHTNING....0 PERCENT OVER THE KOOTENAI...AND NEAR 0
PERCENT TOWARD THE FLATHEAD/GLACIER PARK.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....85-95 VALLEYS AND 70-75 RIDGES.
* MIN HUMIDITY........13-18 PERCENT VALLEYS AND 20-30 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............WEST 5-10 MPH.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1000. 9 KFT AGL AFTER 1400.
* TRANSPORT WINDS.....WEST 10 MPH UNTIL 1300, THEN 15 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
THURSDAY
CLEAR. LOWS 50-60. HIGHS 80-90. MIN HUMIDITIES
15-25 PERCENT. SOUTHWEST WINDS 10-15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 55-65. HIGHS 85-95. MIN HUMIDITIES
15-25 PERCENT. SOUTHWEST WINDS 10-15 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 55-65. HIGHS 80-90. SOUTHWEST WINDS
10-20 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 55-65. HIGHS 80-90.
MONDAY
MOSTLY CLEAR. LOWS 50-60. HIGHS 75-85.
MTZ106-108-050900-
WEST LOLO-EAST LOLO-
250 AM MDT TUE AUG 4 2026
TODAY
* SKY/WEATHER.........PARTLY CLOUDY. PATCHY SMOKE.
* MAX TEMPERATURE.....75-85 VALLEYS AND 68-78 RIDGES.
* MIN HUMIDITY........9-19 PERCENT VALLEYS AND 18-28 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 NORTHWEST IN THE
AFTERNOON.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1000. 8 KFT AGL AFTER 1300.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 1400, 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.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR. PATCHY SMOKE IN THE EVENING.
* MIN TEMPERATURE.....45-55.
* MAX HUMIDITY........54-64 PERCENT VALLEYS AND 41-51 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 5-10 MPH.
* RIDGE TOP............WEST 5-10 MPH.
* MIXING HEIGHT.......7 KFT AGL UNTIL 2000. BELOW 500 FT TO 1 KFT
AGL AFTER 2100.
* TRANSPORT WINDS.....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.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY. PATCHY SMOKE IN THE AFTERNOON.
* MAX TEMPERATURE.....80-90 VALLEYS AND 73-83 RIDGES.
* MIN HUMIDITY........10-15 PERCENT VALLEYS AND 13-23 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............WEST 5-10 MPH.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1000. 9 KFT AGL AFTER 1300.
* TRANSPORT WINDS.....WEST 10 MPH UNTIL 1600, THEN 15 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
THURSDAY
CLEAR. LOWS 50-60. HIGHS 85-95. MIN HUMIDITIES
10-20 PERCENT. SOUTHWEST WINDS 5-10 MPH.
FRIDAY
CLEAR. LOWS 55-65. HIGHS 85-95. MIN HUMIDITIES 15-25 PERCENT.
SOUTHWEST WINDS 10-15 MPH.
SATURDAY
CLEAR. LOWS 55-65. HIGHS 85-95. SOUTHWEST WINDS 10-20 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 55-65. HIGHS 80-90.
MONDAY
MOSTLY CLEAR. LOWS 55-65. HIGHS 80-90.
MTZ107-050900-
FLATHEAD RESERVATION-
250 AM MDT TUE AUG 4 2026
TODAY
* SKY/WEATHER.........PARTLY CLOUDY. PATCHY SMOKE IN THE MORNING.
* MAX TEMPERATURE.....80-85 VALLEYS AND 60-65 RIDGES.
* MIN HUMIDITY........10-20 PERCENT VALLEYS AND 19-29 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO VARIABLE LESS THAN 7 MPH.
* RIDGE TOP............SOUTHEAST 5-15 MPH BECOMING NORTHWEST IN THE
AFTERNOON.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1000. 9 KFT AGL AFTER 1600.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....45-55.
* MAX HUMIDITY........58-68 PERCENT VALLEYS AND 43-53 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 1-3 MPH.
* RIDGE TOP............NORTH 5-15 MPH BECOMING WEST 5-10 MPH AFTER
MIDNIGHT.
* MIXING HEIGHT.......8 KFT AGL UNTIL 2000. BELOW 500 FT TO 1 KFT
AGL AFTER 2100.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT OVER AREAS WEST OF HIGHWAY
93...AND 0 PERCENT TOWARD THE MISSION MTNS AND AREAS EAST OF
HIGHWAY 93.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....85-90 VALLEYS AND 65-70 RIDGES.
* MIN HUMIDITY........12-17 PERCENT VALLEYS AND 14-24 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............WEST 5-10 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL UNTIL 1000. 10 KFT
AGL AFTER 1400.
* TRANSPORT WINDS.....SOUTHWEST 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
THURSDAY
CLEAR. LOWS 55-65. HIGHS 90-100. MIN HUMIDITIES
10-20 PERCENT. SOUTHWEST WINDS 5-10 MPH.
FRIDAY
CLEAR. LOWS 55-65. HIGHS 90-100. MIN HUMIDITIES
10-20 PERCENT. SOUTHWEST WINDS 10-15 MPH.
SATURDAY
CLEAR. LOWS 55-65. HIGHS 85-95. SOUTHWEST WINDS 10-20 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 55-65. HIGHS 85-95.
MONDAY
MOSTLY CLEAR. LOWS 55-65. HIGHS 85-95.
MTZ109-050900-
BITTERROOT-
250 AM MDT TUE AUG 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY. AREAS OF SMOKE.
* MAX TEMPERATURE.....80-85 VALLEYS AND 65-70 RIDGES.
* MIN HUMIDITY........12-22 PERCENT VALLEYS AND 18-28 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO VARIABLE LESS THAN 7 MPH.
* RIDGE TOP............EAST UP TO 5 MPH INCREASING TO NORTHWEST
10-15 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1000. 8 KFT AGL AFTER 1400.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 1200, THEN
WEST 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR. PATCHY SMOKE.
* MIN TEMPERATURE.....45-50.
* MAX HUMIDITY........58-68 PERCENT VALLEYS AND 44-54 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTH 5-10 MPH IN THE EVENING BECOMING
DOWNSLOPE/DOWNVALLEY 2-5 MPH.
* RIDGE TOP............NORTHWEST 10-15 MPH BECOMING WEST 5-10 MPH
AFTER MIDNIGHT.
* MIXING HEIGHT.......6 KFT AGL UNTIL 2000, THEN BELOW 500 FT TO 1
KFT AGL.
* TRANSPORT WINDS.....NORTHWEST 10 MPH UNTIL 0200, THEN VARIABLE
LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT OVER THE DARBY, SULA, AND WEST FORK
DISTRICTS...AND NEAR 0 PERCENT TOWARD AREAS NORTH OF HAMILTON.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY. PATCHY SMOKE.
* MAX TEMPERATURE.....85-90 VALLEYS AND 70-75 RIDGES.
* MIN HUMIDITY........10-19 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............SOUTHWEST 5-10 MPH.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1000. 8 KFT AGL AFTER 1400.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 1100, THEN
WEST 10 MPH UNTIL 1500, THEN 15 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
THURSDAY
CLEAR. LOWS 50-60. HIGHS 85-95. MIN HUMIDITIES
10-20 PERCENT. SOUTHWEST WINDS 5-10 MPH.
FRIDAY
CLEAR. LOWS 55-65. HIGHS 85-95. MIN HUMIDITIES 15-25 PERCENT.
SOUTHWEST WINDS 10-15 MPH.
SATURDAY
CLEAR. LOWS 55-65. HIGHS 85-95. WEST WINDS 10-20 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 55-65. HIGHS 80-90.
MONDAY
MOSTLY CLEAR. LOWS 55-65. HIGHS 80-90.
MTZ110-111-050900-
DEERLODGE/WEST BEAVERHEAD-EAST BEAVERHEAD-
250 AM MDT TUE AUG 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY. AREAS OF SMOKE.
* MAX TEMPERATURE.....75-80 VALLEYS AND 65-70 RIDGES.
* MIN HUMIDITY........14-24 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............NORTHEAST 5-10 MPH BECOMING NORTHWEST 10-15
MPH IN THE AFTERNOON.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1000. 9 KFT AGL AFTER 1700.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 1200, THEN
WEST 10 MPH UNTIL 1700, THEN 15 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR. PATCHY SMOKE.
* MIN TEMPERATURE.....33-43 VALLEYS AND 40-45 RIDGES.
* MAX HUMIDITY........65-75 PERCENT VALLEYS AND 43-53 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTH 10-15 MPH IN THE EVENING BECOMING
DOWNSLOPE/DOWNVALLEY 5-10 MPH.
* RIDGE TOP............NORTH 5-15 MPH.
* MIXING HEIGHT.......7 KFT AGL UNTIL 2000. BELOW 500 FT TO 1 KFT
AGL AFTER 2100.
* TRANSPORT WINDS.....NORTHWEST 15 MPH UNTIL 2000. VARIABLE LESS
THAN 10 MPH AFTER 0300.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY. PATCHY SMOKE.
* MAX TEMPERATURE.....80-85 VALLEYS AND 70-75 RIDGES.
* MIN HUMIDITY........8-17 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING WEST 10-15 MPH IN THE
AFTERNOON.
* RIDGE TOP............WEST UP TO 5 MPH INCREASING TO 5-15 MPH IN
THE AFTERNOON.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL UNTIL 0900. 10 KFT
AGL AFTER 1600.
* TRANSPORT WINDS.....WEST 10 MPH UNTIL 1300, THEN 15 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
THURSDAY
CLEAR. LOWS 50-60. HIGHS 85-95. MIN HUMIDITIES
10-20 PERCENT. WEST WINDS 10-15 MPH.
FRIDAY
CLEAR. LOWS 55-65. HIGHS 85-95. MIN HUMIDITIES 15-25 PERCENT.
WEST WINDS 10-20 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 55-65. HIGHS 85-95. WEST WINDS
10-20 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 55-65. HIGHS 85-95.
MONDAY
MOSTLY CLEAR. LOWS 50-60. HIGHS 80-90.
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