421  
FPUS65 KTFX 200837  
AFPTFX  
 
CENTRAL AND SOUTHWEST MONTANA AREA FORECAST  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
ISSUED BY NATIONAL WEATHER SERVICE MISSOULA MT  
237 AM MDT TUE MAY 20 2025  
 
MTZ301>314-316>318-210015-  
CENTRAL MONTANA-  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
237 AM MDT TUE MAY 20 2025  
 
   
TODAY
 
INCREASING CLOUDS. PATCHY FOG IN THE MORNING. SLIGHT  
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. HIGHS 55 TO  
65...45 TO 55 IN THE MOUNTAINS. WEST WINDS 20 TO 25 MPH IN THE  
AFTERNOON.    
TONIGHT...PARTLY CLOUDY. LOWS 35 TO 40
 
25 TO 35 IN THE  
MOUNTAINS.    
WEDNESDAY
 
SUNNY IN THE MORNING THEN BECOMING PARTLY CLOUDY.  
SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON AND EVENING. HIGHS  
55 TO 65...45 TO 55 IN THE MOUNTAINS.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS 35 TO 40. HIGHS 60 TO 70.    
FRIDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS. LOWS 35 TO 45.  
HIGHS 55 TO 65.    
SATURDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS 40 TO 45. HIGHS 60 TO 65.  
 

 
 
MTZ315-319>330-210015-  
SOUTHWEST MONTANA-  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
237 AM MDT TUE MAY 20 2025  
 
   
TODAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN AND SNOW SHOWERS IN  
THE MORNING, THEN CHANCE OF RAIN SHOWERS, SNOW SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 50 TO 60...40 TO  
50 IN THE MOUNTAINS.    
TONIGHT
 
PARTLY CLOUDY. CHANCE OF SNOW SHOWERS, SLIGHT CHANCE  
OF SHOWERS AND THUNDERSTORMS. LOWS 25 TO 35.    
WEDNESDAY
 
SUNNY IN THE MORNING THEN BECOMING PARTLY CLOUDY.  
HIGHS 55 TO 60...45 TO 55 IN THE MOUNTAINS.    
THURSDAY
 
RAIN SHOWERS LIKELY AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS 30 TO 40. HIGHS 50 TO 60.    
FRIDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS 35 TO 40. HIGHS 55 TO 65.    
SATURDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS 35 TO 40. HIGHS 50 TO 60.  
 

 
 
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