359
FNUS55 KMSO 231937
FWFMSO
FIRE WEATHER PLANNING FORECAST FOR WRN MONTANA AND N CNTRL IDAHO
NATIONAL WEATHER SERVICE MISSOULA MT
137 PM MDT SUN AUG 23 2026
...RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR PORTIONS
OF DEERLODGE/WEST BEAVERHEAD...
DISCUSSION
IDAHO (ZONES 102 AND 103): A DRY COLD FRONT WILL BRING ELEVATED FIRE
WEATHER, THROUGH THIS EVENING WITH DRY, WINDY, AND UNSTABLE CONDITIONS.
HIGH PRESSURE RETURNS EARLY NEXT WEEK, BRINGING ABOVE-NORMAL
TEMPERATURES AND POOR OVERNIGHT RELATIVE HUMIDITY RECOVERIES ACROSS MID-
SLOPES AND RIDGES.
NORTHWEST MT (ZONES 104 AND 105): A DRY COLD FRONT WILL BRING ELEVATED
FIRE WEATHER, THROUGH THIS EVENING WITH DRY, WINDY, AND UNSTABLE
CONDITIONS. HIGH PRESSURE RETURNS EARLY NEXT WEEK, BRINGING ABOVE-
NORMAL TEMPERATURES AND POOR OVERNIGHT RELATIVE HUMIDITY RECOVERIES
ACROSS MID-SLOPES AND RIDGES.
WEST CENTRAL MT (ZONES 106, 107 AND 108): A DRY COLD FRONT WILL BRING
ELEVATED FIRE WEATHER, THROUGH THIS EVENING WITH DRY, WINDY, AND
UNSTABLE CONDITIONS. HIGH PRESSURE RETURNS EARLY NEXT WEEK, BRINGING
ABOVE-NORMAL TEMPERATURES AND POOR OVERNIGHT RELATIVE HUMIDITY
RECOVERIES ACROSS MID-SLOPES AND RIDGES.
SOUTHWEST MT (ZONES 109, 110 AND 111): A DRY COLD FRONT WILL BRING
ELEVATED TO CRITICAL FIRE WEATHER (FIRE ZONE 110), THROUGH THIS EVENING
WITH DRY, WINDY, AND UNSTABLE CONDITIONS. THUNDERSTORMS WILL IMPACT
AREAS ALONG AND EAST OF I-15 BY MID-AFTERNOON THROUGH THE EVENING, WITH
STRONG OUTFLOW WINDS AND LIGHTNING BEING THE PRIMARY STORM THREATS. HIGH
PRESSURE REBUILDS MONDAY, LEADING TO ABOVE-NORMAL TEMPERATURES AND POOR
OVERNIGHT MID-SLOPE RELATIVE HUMIDITY RECOVERIES. NEAR-DAILY AFTERNOON
SHOWERS AND THUNDERSTORMS RETURN NEXT WEEK.
VIEW WEATHER BRIEFING VIDEOS ON OUR YOUTUBE CHANNEL
AT HTTPS://WWW.YOUTUBE.COM/NWSMISSOULA
IDZ102-103-241945-
PALOUSE/HELLS CANYON-CLEARWATER/NEZ PERCE-
1237 PM PDT SUN AUG 23 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR. PATCHY SMOKE.
* MIN TEMPERATURE.....45-55.
* MAX HUMIDITY........65-75 PERCENT VALLEYS AND 58-68 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTHWEST 5-10 MPH IN THE EVENING BECOMING
DOWNSLOPE/DOWNVALLEY 2-5 MPH.
* RIDGE TOP............NORTHWEST 5-15 MPH BECOMING SOUTHWEST UP TO
5 MPH AFTER MIDNIGHT.
* MIXING HEIGHT.......7 KFT AGL UNTIL 1900. BELOW 500 FT TO 1 KFT
AGL AFTER 2000.
* TRANSPORT WINDS.....NORTHWEST 15 MPH UNTIL 2200, THEN VARIABLE
LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
MONDAY
* SKY/WEATHER.........PARTLY CLOUDY. PATCHY SMOKE.
* MAX TEMPERATURE.....88-98 VALLEYS AND 75-80 RIDGES.
* MIN HUMIDITY........13-23 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............SOUTHWEST UP TO 5 MPH BECOMING WEST 5-10 MPH
IN THE AFTERNOON.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1100. 7 KFT AGL AFTER 1500.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 1200, THEN
WEST 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. PATCHY SMOKE.
* MIN TEMPERATURE.....50-60.
* MAX HUMIDITY........53-63 PERCENT VALLEYS AND 44-54 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......VARIABLE LESS THAN 5 MPH IN THE EVENING
BECOMING DOWNSLOPE/DOWNVALLEY 2-5 MPH.
* RIDGE TOP............NORTH UP TO 5 MPH BECOMING SOUTHEAST 5-10
MPH AFTER MIDNIGHT.
* MIXING HEIGHT.......6 KFT AGL UNTIL 1900. BELOW 500 FT TO 1 KFT
AGL AFTER 2000.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
TUESDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....93-103 VALLEYS AND 80-85 RIDGES.
* MIN HUMIDITY........13-23 PERCENT VALLEYS AND 19-29 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 SOUTHWEST IN THE
AFTERNOON.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL UNTIL 1000. GREATER
THAN 12 KFT AGL AFTER 1400.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 1200, THEN
SOUTHWEST 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT OVER THE PALOUSE/HELLS
CANYON...AND 15 PERCENT TOWARD THE CLEARWATER/NEZ PERCE.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY
PARTLY CLOUDY. LOWS 60-70. HIGHS 85-95. MIN HUMIDITIES
10-20 PERCENT. SOUTHEAST WINDS 5-10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 55-65. HIGHS 80-90. MIN HUMIDITIES
15-25 PERCENT. WEST WINDS 5-10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 50-60. HIGHS 75-85. WEST WINDS 5-10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 50-60. HIGHS 75-85.
SUNDAY
MOSTLY CLEAR. LOWS 45-55. HIGHS 75-85.
MTZ104-105-241945-
KOOTENAI-FLATHEAD/GLACIER PARK-
137 PM MDT SUN AUG 23 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. PATCHY SMOKE.
* MIN TEMPERATURE.....45-55.
* MAX HUMIDITY........90-100 PERCENT VALLEYS AND 60-70 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......SOUTHWEST 5-10 MPH IN THE EVENING BECOMING
DOWNSLOPE/DOWNVALLEY 2-5 MPH.
* RIDGE TOP............WEST 15-25 MPH.
* MIXING HEIGHT.......6 KFT AGL UNTIL 2000. BELOW 500 FT TO 1 KFT
AGL AFTER 2100.
* TRANSPORT WINDS.....WEST 20 MPH UNTIL 2300, THEN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
MONDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....80-90 VALLEYS AND 65-75 RIDGES.
* MIN HUMIDITY........19-29 PERCENT VALLEYS AND 29-39 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. 7 KFT AGL AFTER 1500.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....45-55.
* MAX HUMIDITY........86-96 PERCENT VALLEYS AND 58-68 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTHEAST 5-10 MPH.
* RIDGE TOP............NORTHEAST 10-15 MPH.
* MIXING HEIGHT.......7 KFT AGL UNTIL 1900. BELOW 500 FT TO 1 KFT
AGL AFTER 2000.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 2000, THEN
EAST 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
TUESDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....85-95 VALLEYS AND 70-80 RIDGES.
* MIN HUMIDITY........12-22 PERCENT VALLEYS AND 23-33 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............EAST 5-15 MPH BECOMING SOUTH 5-10 MPH IN THE
AFTERNOON.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1100. 10 KFT AGL AFTER
1600.
* TRANSPORT WINDS.....EAST 10 MPH UNTIL 1200. SOUTHWEST 10 MPH
AFTER 1500.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND
THUNDERSTORMS. CHANCE OF PRECIPITATION 20 PERCENT. LOWS 55-65. HIGHS
80-90. MIN HUMIDITIES 15-25 PERCENT. EAST WINDS 5-10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 55-65. HIGHS 75-85. MIN HUMIDITIES
15-25 PERCENT. SOUTH WINDS 10-15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 50-60. HIGHS 70-80. SOUTHWEST WINDS
10-15 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 50-60. HIGHS 70-80.
SUNDAY
MOSTLY CLEAR. LOWS 45-55. HIGHS 65-75.
MTZ106-108-241945-
WEST LOLO-EAST LOLO-
137 PM MDT SUN AUG 23 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR. PATCHY SMOKE.
* MIN TEMPERATURE.....45-55.
* MAX HUMIDITY........74-84 PERCENT VALLEYS AND 52-62 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 10-15 MPH IN THE EVENING BECOMING
DOWNSLOPE/DOWNVALLEY 5-10 MPH.
* RIDGE TOP............WEST 10-20 MPH.
* MIXING HEIGHT.......6 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....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
MONDAY
* SKY/WEATHER.........MOSTLY SUNNY. PATCHY SMOKE.
* MAX TEMPERATURE.....80-90 VALLEYS AND 73-83 RIDGES.
* MIN HUMIDITY........9-19 PERCENT VALLEYS AND 18-28 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO VARIABLE LESS THAN 7 MPH.
* RIDGE TOP............WEST 5-10 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL UNTIL 1000. 7 KFT
AGL AFTER 1500.
* TRANSPORT WINDS.....WEST 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. PATCHY SMOKE.
* MIN TEMPERATURE.....43-53 VALLEYS AND 50-55 RIDGES.
* MAX HUMIDITY........64-74 PERCENT VALLEYS AND 45-55 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 2-5 MPH.
* RIDGE TOP............NORTH 5-10 MPH BECOMING EAST 10-15 MPH 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.
TUESDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....85-95 VALLEYS AND 78-88 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............EAST UP TO 5 MPH.
* MIXING HEIGHT.......1-2 KFT AGL UNTIL 1100. 11 KFT AGL AFTER
1500.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 1300.
SOUTHWEST 10 MPH AFTER 1500.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND
THUNDERSTORMS. CHANCE OF PRECIPITATION 20 PERCENT. LOWS 55-65. HIGHS
85-95. MIN HUMIDITIES 15-25 PERCENT. DIURNAL TERRAIN WINDS TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 55-65. HIGHS 80-90. MIN HUMIDITIES
15-25 PERCENT. SOUTHWEST WINDS 5-10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 50-60. HIGHS 75-85. WEST WINDS 10-15 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 50-60. HIGHS 70-80.
SUNDAY
MOSTLY CLEAR. LOWS 45-55. HIGHS 70-80.
MTZ107-241945-
FLATHEAD RESERVATION-
137 PM MDT SUN AUG 23 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....45-55.
* MAX HUMIDITY........68-78 PERCENT VALLEYS AND 55-65 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 5-15 MPH IN THE EVENING BECOMING
DOWNSLOPE/DOWNVALLEY 2-5 MPH.
* RIDGE TOP............WEST 15-25 MPH DECREASING TO 5-15 MPH AFTER
MIDNIGHT.
* MIXING HEIGHT.......7 KFT AGL UNTIL 2000. BELOW 500 FT TO 1 KFT
AGL AFTER 2200.
* TRANSPORT WINDS.....WEST 20 MPH UNTIL 2100, THEN SOUTHWEST 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.
MONDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....85-90 VALLEYS AND 60-65 RIDGES.
* MIN HUMIDITY........15-25 PERCENT VALLEYS AND 26-36 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. 7 KFT
AGL AFTER 1500.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....45-55.
* MAX HUMIDITY........70-80 PERCENT VALLEYS AND 53-63 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......DOWNSLOPE/DOWNVALLEY 1-3 MPH.
* RIDGE TOP............NORTHEAST 5-10 MPH BECOMING SOUTHEAST 10-15
MPH AFTER MIDNIGHT.
* MIXING HEIGHT.......6 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.
TUESDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....90-95 VALLEYS AND 70-75 RIDGES.
* MIN HUMIDITY........12-22 PERCENT VALLEYS AND 21-31 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............SOUTHEAST 5-15 MPH BECOMING SOUTHWEST UP TO
5 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL UNTIL 1100. 9 KFT
AGL AFTER 1600.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 1300.
SOUTHWEST 10 MPH AFTER 1400.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND
THUNDERSTORMS. CHANCE OF PRECIPITATION 20 PERCENT. LOWS 55-65. HIGHS
85-95. MIN HUMIDITIES 15-25 PERCENT. EAST WINDS 5-10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 55-65. HIGHS 85-95. MIN HUMIDITIES
15-25 PERCENT. SOUTHWEST WINDS 10-15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 55-65. HIGHS 80-90. SOUTHWEST WINDS
10-15 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 50-60. HIGHS 75-85.
SUNDAY
MOSTLY CLEAR. LOWS 50-60. HIGHS 75-85.
MTZ109-241945-
BITTERROOT-
137 PM MDT SUN AUG 23 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR. PATCHY SMOKE.
* MIN TEMPERATURE.....45-50.
* MAX HUMIDITY........79-89 PERCENT VALLEYS AND 54-64 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTH 10-15 MPH IN THE EVENING BECOMING
DOWNSLOPE/DOWNVALLEY 5-10 MPH.
* RIDGE TOP............WEST 5-15 MPH.
* MIXING HEIGHT.......7 KFT AGL UNTIL 1900. BELOW 500 FT TO 1 KFT
AGL AFTER 2000.
* TRANSPORT WINDS.....WEST 15 MPH UNTIL 2200, THEN VARIABLE LESS
THAN 10 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
MONDAY
* SKY/WEATHER.........MOSTLY SUNNY. PATCHY SMOKE.
* MAX TEMPERATURE.....85-90 VALLEYS AND 70-75 RIDGES.
* MIN HUMIDITY........14-24 PERCENT.
* 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. 8 KFT
AGL AFTER 1400.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 1200, THEN
WEST 10 MPH UNTIL 1500, THEN 15 MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. PATCHY SMOKE.
* MIN TEMPERATURE.....50-55.
* MAX HUMIDITY........62-72 PERCENT VALLEYS AND 42-52 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......VARIABLE LESS THAN 5 MPH IN THE EVENING
BECOMING DOWNSLOPE/DOWNVALLEY 2-5 MPH.
* RIDGE TOP............NORTH UP TO 5 MPH BECOMING SOUTHEAST 5-10
MPH AFTER MIDNIGHT.
* MIXING HEIGHT.......6 KFT AGL UNTIL 1900. BELOW 500 FT TO 1 KFT
AGL AFTER 2000.
* TRANSPORT WINDS.....NORTHWEST 10 MPH UNTIL 2000. VARIABLE LESS
THAN 10 MPH AFTER 0400.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
TUESDAY
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS.
SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.....90-95 VALLEYS AND 75-80 RIDGES.
* MIN HUMIDITY........16-26 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO VARIABLE LESS THAN 7 MPH.
* RIDGE TOP............SOUTH 5-10 MPH BECOMING SOUTHWEST UP TO 5
MPH IN THE AFTERNOON.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL UNTIL 1000, THEN 3
KFT AGL UNTIL 1100, THEN 6 KFT AGL UNTIL 1200, THEN 8 KFT AGL
UNTIL 1300, THEN 11 KFT AGL UNTIL 1500, THEN 12 KFT AGL UNTIL
1700, THEN 10 KFT AGL.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 1100, THEN
SOUTHWEST 10 MPH.
* CHANCE LIGHTNING....20 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
PARTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. CHANCE OF PRECIPITATION 30 PERCENT. LOWS
55-65. HIGHS 80-90. MIN HUMIDITIES 15-25 PERCENT. SOUTH WINDS 5-10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 55-65. HIGHS 80-90. MIN HUMIDITIES
15-25 PERCENT. SOUTH WINDS 5-10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 50-60. HIGHS 75-85. SOUTHWEST WINDS
5-10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 50-60. HIGHS 70-80.
SUNDAY
MOSTLY CLEAR. LOWS 45-55. HIGHS 70-80.
MTZ111-241945-
EAST BEAVERHEAD-
137 PM MDT SUN AUG 23 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. PATCHY SMOKE AFTER MIDNIGHT.
* MIN TEMPERATURE.....45-50.
* MAX HUMIDITY........77-87 PERCENT VALLEYS AND 47-57 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 10-20 MPH IN THE EVENING BECOMING
DOWNSLOPE/DOWNVALLEY 5-10 MPH.
* RIDGE TOP............WEST 10-20 MPH DECREASING TO 5-10 MPH AFTER
MIDNIGHT.
* MIXING HEIGHT.......10 KFT AGL UNTIL 1900. BELOW 500 FT TO 1 KFT
AGL AFTER 2000.
* TRANSPORT WINDS.....WEST 25 MPH UNTIL 2000, THEN 15 MPH UNTIL
0100, THEN VARIABLE LESS THAN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
MONDAY
* SKY/WEATHER.........PARTLY CLOUDY. PATCHY SMOKE IN THE MORNING.
* MAX TEMPERATURE.....85-90 VALLEYS AND 70-75 RIDGES.
* MIN HUMIDITY........11-20 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 5-15 MPH.
* RIDGE TOP............WEST 5-15 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL UNTIL 1000. 11 KFT
AGL AFTER 1500.
* TRANSPORT WINDS.....SOUTHWEST 10 MPH UNTIL 1200, THEN WEST 20
MPH.
* CHANCE LIGHTNING....15 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
AND THUNDERSTORMS.
* MIN TEMPERATURE.....45-55.
* MAX HUMIDITY........69-79 PERCENT VALLEYS AND 43-53 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......VARIABLE LESS THAN 5 MPH BECOMING SOUTH 5-10
MPH AFTER MIDNIGHT.
* RIDGE TOP............SOUTH 5-10 MPH.
* MIXING HEIGHT.......9 KFT AGL UNTIL 1900. BELOW 500 FT TO 1 KFT
AGL AFTER 2000.
* TRANSPORT WINDS.....WEST 15 MPH UNTIL 2000, THEN NORTH 10 MPH
UNTIL 2100, THEN SOUTHEAST 10 MPH.
* CHANCE LIGHTNING....15 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
TUESDAY
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS
IN THE AFTERNOON.
* MAX TEMPERATURE.....85-90 VALLEYS AND 70-75 RIDGES.
* MIN HUMIDITY........16-26 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, THEN 3
KFT AGL UNTIL 1100, THEN 5 KFT AGL UNTIL 1200, THEN 8 KFT AGL
UNTIL 1300, THEN 11 KFT AGL UNTIL 1700, THEN 10 KFT AGL.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 1100, THEN
WEST 10 MPH UNTIL 1400, THEN 15 MPH.
* CHANCE LIGHTNING....20 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
WEDNESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND
THUNDERSTORMS. CHANCE OF PRECIPITATION 20 PERCENT. LOWS 50-60. HIGHS
80-90. MIN HUMIDITIES 20-30 PERCENT. SOUTH WINDS 5-10 MPH.
THURSDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND
THUNDERSTORMS. CHANCE OF PRECIPITATION 20 PERCENT. LOWS 50-60. HIGHS
80-90. MIN HUMIDITIES 10-20 PERCENT. SOUTH WINDS 10-20 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 50-60. HIGHS 75-85. SOUTHWEST WINDS
10-20 MPH.
SATURDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS. CHANCE OF
SHOWERS 20 PERCENT. LOWS 50-60. HIGHS 75-85.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS. CHANCE OF
SHOWERS 20 PERCENT. LOWS 45-55. HIGHS 70-80.
MTZ110-241945-
DEERLODGE/WEST BEAVERHEAD-
137 PM MDT SUN AUG 23 2026
..RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT THIS EVENING
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. PATCHY SMOKE.
* MIN TEMPERATURE.....28-38 VALLEYS AND 40-45 RIDGES.
* MAX HUMIDITY........84-94 PERCENT VALLEYS AND 57-67 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......WEST 10-20 MPH IN THE EVENING BECOMING
DOWNSLOPE/DOWNVALLEY 5-10 MPH.
* RIDGE TOP............WEST 20-30 MPH DECREASING TO 5-10 MPH AFTER
MIDNIGHT.
* MIXING HEIGHT.......9 KFT AGL UNTIL 1900. BELOW 500 FT TO 1 KFT
AGL AFTER 2000.
* TRANSPORT WINDS.....WEST 20 MPH UNTIL 2100. VARIABLE LESS THAN 10
MPH AFTER 0400.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
MONDAY
* SKY/WEATHER.........PARTLY CLOUDY. PATCHY SMOKE.
* MAX TEMPERATURE.....80-85 VALLEYS AND 70-75 RIDGES.
* MIN HUMIDITY........12-22 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING 10-15 MPH IN THE AFTERNOON.
* RIDGE TOP............WEST 5-15 MPH.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL UNTIL 1000. 10 KFT
AGL AFTER 1500.
* TRANSPORT WINDS.....SOUTHWEST 10 MPH UNTIL 1300, THEN WEST 15
MPH.
* CHANCE LIGHTNING....0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. PATCHY SMOKE.
* MIN TEMPERATURE.....35-45 VALLEYS AND 45-50 RIDGES.
* MAX HUMIDITY........66-76 PERCENT VALLEYS AND 44-54 PERCENT
RIDGES.
* 20-FOOT WINDS.......
* LOWER ELEVATION......NORTH 5-10 MPH BECOMING VARIABLE LESS THAN 5
MPH AFTER MIDNIGHT.
* RIDGE TOP............NORTH 5-10 MPH BECOMING SOUTHEAST UP TO 5
MPH AFTER MIDNIGHT.
* MIXING HEIGHT.......9 KFT AGL UNTIL 1900. BELOW 500 FT TO 1 KFT
AGL AFTER 2000.
* TRANSPORT WINDS.....WEST 15 MPH UNTIL 2000, THEN VARIABLE LESS
THAN 10 MPH.
* CHANCE LIGHTNING....NEAR 0 PERCENT.
* CWR (> 0.10 INCH)...0 PERCENT.
TUESDAY
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS.
SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.....80-85 VALLEYS AND 70-75 RIDGES.
* MIN HUMIDITY........16-26 PERCENT.
* 20-FOOT WINDS.......
* LOWER ELEVATION......CALM TO BECOMING UPSLOPE/UPVALLEY 4-8 MPH IN
THE AFTERNOON.
* RIDGE TOP............SOUTH UP TO 5 MPH BECOMING WEST 5-10 MPH IN
THE AFTERNOON.
* MIXING HEIGHT.......BELOW 500 FT TO 1 KFT AGL UNTIL 1000. 12 KFT
AGL AFTER 1400.
* TRANSPORT WINDS.....VARIABLE LESS THAN 10 MPH UNTIL 1100, THEN
SOUTHWEST 10 MPH UNTIL 1500, THEN WEST 15 MPH.
* CHANCE LIGHTNING....15 PERCENT.
* CWR (> 0.10 INCH)...10 PERCENT.
WEDNESDAY
PARTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. CHANCE OF PRECIPITATION 30 PERCENT. LOWS
50-60. HIGHS 80-90. MIN HUMIDITIES 15-25 PERCENT. SOUTH WINDS 5-10 MPH.
THURSDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN SHOWERS AND
THUNDERSTORMS. CHANCE OF PRECIPITATION 20 PERCENT. LOWS 50-60. HIGHS
75-85. MIN HUMIDITIES 10-20 PERCENT. SOUTHWEST WINDS 10-15 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 50-60. HIGHS 75-85. SOUTHWEST WINDS
10-15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 45-55. HIGHS 70-80.
SUNDAY
MOSTLY CLEAR. LOWS 40-50. HIGHS 70-80.
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