745  
FPUS65 KTFX 212230  
SFPMT  
 
STATE FORECAST FOR MONTANA  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
430 PM MDT THU MAY 21 2026  
 
MTZ001>007-043-221000-  
WEST OF THE CONTINENTAL DIVIDE-  
NATIONAL WEATHER SERVICE MISSOULA MT  
430 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  
430 PM MDT THU MAY 21 2026  
   
TONIGHT...PARTLY CLOUDY. 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  
430 PM MDT THU MAY 21 2026  
   
TONIGHT...PARTLY CLOUDY. 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  
430 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  
430 PM MDT THU MAY 21 2026  
 
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR  
PORTIONS OF SOUTH CENTRAL MONTANA...  
   
TONIGHT  
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS. LOWS IN  
THE LOWER 30S TO THE LOWER 40S.    
FRIDAY  
SUNNY. HIGHS OF AROUND 60 TO AROUND 70.    
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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