543
FPUS65 KTFX 220200
SFPMT
STATE FORECAST FOR MONTANA
NATIONAL WEATHER SERVICE GREAT FALLS MT
800 PM MDT THU MAY 21 2026
MTZ001>007-043-221000-
WEST OF THE CONTINENTAL DIVIDE-
NATIONAL WEATHER SERVICE MISSOULA MT
800 PM MDT THU MAY 21 2026
TONIGHT
PARTLY CLOUDY. LOWS IN THE 30S.
FRIDAY
PARTLY CLOUDY. HIGHS IN THE MID 60S TO LOWER 70S.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 30S TO LOWER 40S.
SATURDAY
PARTLY CLOUDY. HIGHS IN THE 70S TO LOWER 80S.
SUNDAY
MOSTLY CLEAR. LOWS IN THE 40S. HIGHS IN THE MID 70S TO
LOWER 80S.
MEMORIAL DAY
PARTLY CLOUDY. A CHANCE OF RAIN. LOWS IN THE 40S.
HIGHS IN THE MID 70S TO LOWER 80S.
TUESDAY
MOSTLY CLOUDY WITH RAIN SHOWERS LIKELY. LOWS IN THE
UPPER 30S TO MID 40S. HIGHS IN THE MID 60S TO LOWER 70S.
MTZ301>314-316>318-221000-
CENTRAL MONTANA-
NATIONAL WEATHER SERVICE GREAT FALLS MT
800 PM MDT THU MAY 21 2026
REST OF TONIGHT
MOSTLY CLEAR. SLIGHT CHANCE OF RAIN SHOWERS IN
THE EVENING. LOWS 35 TO 40...25 TO 35 IN THE MOUNTAINS.
FRIDAY...PARTLY CLOUDY. HIGHS 60 TO 70
50 TO 60 IN THE
MOUNTAINS.
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS. LOWS 40 TO 45...35 TO
40 IN THE MOUNTAINS.
SATURDAY
MOSTLY CLEAR. HIGHS 70 TO 80.
SUNDAY
MOSTLY CLEAR. LOWS 45 TO 50. HIGHS 75 TO 85.
MEMORIAL DAY
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN. LOWS 45 TO
50. HIGHS 75 TO 85.
TUESDAY
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS 45 TO 55. HIGHS 70 TO 80.
MTZ315-319>330-221000-
SOUTHWEST MONTANA-
NATIONAL WEATHER SERVICE GREAT FALLS MT
800 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE EVENING. LOWS 30 TO 35...25 TO 30 IN THE MOUNTAINS.
FRIDAY...PARTLY CLOUDY. HIGHS 60 TO 65
50 TO 60 IN THE
MOUNTAINS.
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS. LOWS 30 TO 40.
SATURDAY
PARTLY CLOUDY. HIGHS 65 TO 75.
SUNDAY
PARTLY CLOUDY. LOWS 40 TO 45. HIGHS 65 TO 75.
MEMORIAL DAY
PARTLY CLOUDY. LOWS 40 TO 45. HIGHS 70 TO 80.
TUESDAY
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS 40 TO 50. HIGHS 60 TO 70.
MTZ016>027-059>062-221000-
NORTHEAST MONTANA-
NATIONAL WEATHER SERVICE GLASGOW MT
800 PM MDT THU MAY 21 2026
TONIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS. LOWS NEAR
40.
FRIDAY
PARTLY CLOUDY. HIGHS IN THE MID TO UPPER 60S.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS NEAR 40.
SATURDAY
PARTLY CLOUDY. HIGHS IN THE 70S.
SUNDAY
MOSTLY CLEAR. HIGHS IN THE 80S. LOWS IN THE MID 40S TO
LOWER 50S.
MEMORIAL DAY
MOSTLY CLEAR. HIGHS NEAR 90. LOWS IN THE LOWER TO
MID 50S.
TUESDAY
PARTLY CLOUDY WITH A CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS. HIGHS NEAR 90. LOWS IN THE MID 50S TO
LOWER 60S.
MTZ028>042-056>058-063>068-221000-
SOUTH CENTRAL AND SOUTHEAST MONTANA-
NATIONAL WEATHER SERVICE BILLINGS MT
800 PM MDT THU MAY 21 2026
TONIGHT
MOSTLY CLOUDY. SCATTERED RAIN SHOWERS. LOWS OF AROUND
30 TO AROUND 40.
FRIDAY
SUNNY. HIGHS IN THE LOWER 60S TO THE LOWER 70S.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 30S TO THE MID
40S.
SATURDAY
SUNNY. HIGHS IN THE LOWER 70S TO THE LOWER 80S.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S TO THE
LOWER 50S.
SUNDAY THROUGH MEMORIAL DAY
MOSTLY CLEAR. LOWS IN THE MID 40S
TO THE MID 50S. HIGHS IN THE LOWER 80S TO THE LOWER 90S.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S TO THE UPPER
50S.
TUESDAY
MOSTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. HIGHS IN THE UPPER 70S TO LOWER 90S.
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