168
FPUS65 KTFX 180634
AFPTFX
CENTRAL AND SOUTHWEST MONTANA AREA FORECAST
NATIONAL WEATHER SERVICE GREAT FALLS MT
1233 AM MDT FRI SEP 18 2026
MTZ301>314-316>318-191200-
CENTRAL MONTANA-
NATIONAL WEATHER SERVICE GREAT FALLS MT
1233 AM MDT FRI SEP 18 2026
...FLASH FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH SATURDAY
EVENING FOR LITTLE BELT AND HIGHWOOD MOUNTAINS...
REST OF TONIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS. HIGHS
70 TO 75...60 TO 70 IN THE MOUNTAINS. LOWS 45 TO 55...40 TO 50 IN
THE MOUNTAINS.
SATURDAY...CLOUDY. CHANCE OF RAIN. HIGHS 60 TO 70
50 TO 60 IN
THE MOUNTAINS.
SATURDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS THROUGH
THE NIGHT. PATCHY FOG AFTER MIDNIGHT. LOWS 45 TO 50...40 TO 45 IN
THE MOUNTAINS.
SUNDAY
MOSTLY CLEAR. HIGHS 65 TO 75.
MONDAY
MOSTLY CLEAR. LOWS 45 TO 50. HIGHS 70 TO 75.
TUESDAY
MOSTLY CLEAR. LOWS 45 TO 50. HIGHS 70 TO 80.
WEDNESDAY
MOSTLY CLEAR. LOWS 45 TO 50. HIGHS 70 TO 80.
MTZ315-319>330-191200-
SOUTHWEST MONTANA-
NATIONAL WEATHER SERVICE GREAT FALLS MT
1233 AM MDT FRI SEP 18 2026
...FLASH FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH SATURDAY
EVENING FOR BIG BELT, BRIDGER AND CASTLE MOUNTAINS...ELKHORN AND
BOULDER MOUNTAINS...GALLATIN VALLEY...
...FLASH FLOOD WATCH IN EFFECT FROM THIS AFTERNOON THROUGH
SATURDAY AFTERNOON FOR NORTHWEST BEAVERHEAD COUNTY...
REST OF TONIGHT
CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. RAIN
AND CHANCE OF THUNDERSTORMS. PATCHY FOG AFTER MIDNIGHT. SOME
THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL. HIGHS 60 TO 70...55 TO
65 IN THE MOUNTAINS. LOWS 40 TO 50.
SATURDAY
CLOUDY. PATCHY FOG IN THE MORNING. RAIN SHOWERS AND
CHANCE OF THUNDERSTORMS THROUGH THE DAY. SOME THUNDERSTORMS MAY
PRODUCE HEAVY RAINFALL. HIGHS 55 TO 60...45 TO 55 IN THE
MOUNTAINS.
SATURDAY NIGHT
MOSTLY CLOUDY. RAIN SHOWERS LIKELY AND SLIGHT
CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. PATCHY FOG AFTER
MIDNIGHT. SOME THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL. LOWS
35 TO 45.
SUNDAY
PARTLY CLOUDY. PATCHY FOG. SLIGHT CHANCE OF RAIN
SHOWERS. HIGHS 60 TO 70.
MONDAY
MOSTLY CLEAR. LOWS 40 TO 45. HIGHS 65 TO 75.
TUESDAY
PARTLY CLOUDY. LOWS 40 TO 45. HIGHS 65 TO 75.
WEDNESDAY
MOSTLY CLEAR. LOWS 40 TO 50. HIGHS 65 TO 75.
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