509
FPUS65 KTFX 232238
AFPTFX
CENTRAL AND SOUTHWEST MONTANA AREA FORECAST
NATIONAL WEATHER SERVICE GREAT FALLS MT
437 PM MDT SUN AUG 23 2026
MTZ301>314-316>318-241200-
CENTRAL MONTANA-
NATIONAL WEATHER SERVICE GREAT FALLS MT
437 PM MDT SUN AUG 23 2026
...SEVERE THUNDERSTORM WATCH 617 IN EFFECT UNTIL 7 PM MDT THIS
EVENING FOR NORTHERN BLAINE COUNTY...BEARS PAW MOUNTAINS AND
SOUTHERN BLAINE...JUDITH BASIN COUNTY AND JUDITH GAP...FERGUS
COUNTY BELOW 4500FT...SNOWY AND JUDITH MOUNTAINS...
TONIGHT
MOSTLY CLEAR. SLIGHT CHANCE OF THUNDERSTORMS IN THE
EVENING. SOME THUNDERSTORMS MAY BE SEVERE. LOWS 50 TO 60...45 TO
55 IN THE MOUNTAINS.
MONDAY...SUNNY. HIGHS 75 TO 80
65 TO 75 IN THE MOUNTAINS.
MONDAY NIGHT...MOSTLY CLEAR. LOWS 50 TO 55
45 TO 50 IN THE
MOUNTAINS.
TUESDAY
MOSTLY CLEAR. HIGHS 75 TO 85.
WEDNESDAY
PARTLY CLOUDY. LOWS 50 TO 55. HIGHS 80 TO 90.
THURSDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 55 TO
60. HIGHS 85 TO 95.
FRIDAY
MOSTLY CLEAR. LOWS 50 TO 60. HIGHS 80 TO 90.
MTZ315-319>330-241200-
SOUTHWEST MONTANA-
NATIONAL WEATHER SERVICE GREAT FALLS MT
437 PM MDT SUN AUG 23 2026
...SEVERE THUNDERSTORM WATCH 617 IN EFFECT UNTIL 7 PM MDT THIS
EVENING FOR BIG BELT, BRIDGER AND CASTLE MOUNTAINS...MISSOURI
HEADWATERS...MADISON RIVER VALLEY...GALLATIN VALLEY...BEAVERHEAD
AND WESTERN MADISON BELOW 6000FT...RUBY MOUNTAINS AND SOUTHERN
BEAVERHEAD MOUNTAINS...GALLATIN AND MADISON COUNTY MOUNTAINS AND
CENTENNIAL MOUNTAINS...
TONIGHT
MOSTLY CLEAR. SLIGHT CHANCE OF THUNDERSTORMS IN THE
EVENING. PATCHY SMOKE THROUGH THE NIGHT. SOME THUNDERSTORMS MAY
BE SEVERE. LOWS 45 TO 50.
MONDAY...SUNNY. PATCHY SMOKE. HIGHS 75 TO 85
65 TO 75 IN THE
MOUNTAINS.
MONDAY NIGHT
MOSTLY CLOUDY. PATCHY SMOKE IN THE EVENING. LOWS
45 TO 55.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS 70 TO 80.
WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS 50 TO 55. HIGHS 75 TO 85.
THURSDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 50 TO 55. HIGHS 75 TO 85.
FRIDAY
PARTLY CLOUDY. LOWS 45 TO 55. HIGHS 75 TO 85.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page