032  
FPUS65 KTFX 181200  
SFPMT  
 
STATE FORECAST FOR MONTANA  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
600 AM MDT THU JUN 18 2026  
 
MTZ001>007-043-182200-  
WEST OF THE CONTINENTAL DIVIDE-  
NATIONAL WEATHER SERVICE MISSOULA MT  
600 AM MDT THU JUN 18 2026  
 
.../NOTICE/ THE AREA FORECAST PRODUCT (AFP) AND STATE FORECAST  
PRODUCT (SFP) FOR MONTANA WILL BE DISCONTINUED JUNE 29, 2026...  
   
TODAY
 
MOSTLY SUNNY. HIGHS IN THE MID 70S TO LOWER 80S.    
TONIGHT
 
MOSTLY CLEAR. LOWS IN THE 40S.    
JUNETEENTH
 
PARTLY CLOUDY. HIGHS IN THE UPPER 70S TO MID 80S.    
SATURDAY
 
PARTLY CLOUDY. LOWS IN THE MID 40S TO LOWER 50S.  
HIGHS IN THE MID 70S TO LOWER 80S.    
SUNDAY
 
MOSTLY CLEAR. LOWS IN THE 40S TO LOWER 50S. HIGHS IN  
THE MID 70S TO LOWER 80S.    
MONDAY
 
MOSTLY CLEAR. LOWS IN THE 40S. HIGHS IN THE MID 70S TO  
LOWER 80S.  
 

 
 
MTZ301>314-316>318-182200-  
CENTRAL MONTANA-  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
600 AM MDT THU JUN 18 2026  
   
TODAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS THROUGH THE DAY.  
SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 60 TO 70...  
55 TO 65 IN THE MOUNTAINS.    
TONIGHT
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS 40 TO 45...35 TO 40 IN THE MOUNTAINS.    
JUNETEENTH
 
SUNNY THEN BECOMING PARTLY CLOUDY IN THE AFTERNOON  
THEN BECOMING MOSTLY CLOUDY. HIGHS 70 TO 75...60 TO 70 IN THE  
MOUNTAINS.    
SATURDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS 45 TO 50. HIGHS 70 TO 80.    
SUNDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS 45 TO 50. HIGHS 60 TO 70.    
MONDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS. LOWS  
40 TO 45. HIGHS 60 TO 70.  

 
 
MTZ315-319>330-182200-  
SOUTHWEST MONTANA-  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
600 AM MDT THU JUN 18 2026  
   
TODAY...SUNNY. HIGHS 70 TO 80
 
60 TO 70 IN THE MOUNTAINS.    
TONIGHT
 
PARTLY CLOUDY. LOWS 40 TO 45.    
JUNETEENTH
 
MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. HIGHS  
70 TO 80...65 TO 75 IN THE MOUNTAINS.    
SATURDAY
 
MOSTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS 45 TO 50. HIGHS 65 TO 75.    
SUNDAY
 
PARTLY CLOUDY. LOWS 40 TO 50. HIGHS 65 TO 75.    
MONDAY
 
MOSTLY CLEAR. LOWS 40 TO 45. HIGHS 65 TO 75.  

 
 
MTZ016>027-059>062-182200-  
NORTHEAST MONTANA-  
NATIONAL WEATHER SERVICE GLASGOW MT  
600 AM MDT THU JUN 18 2026  
   
TODAY
 
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN THE MORNING,  
THEN A CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.  
HIGHS NEAR 70.    
TONIGHT
 
MOSTLY CLEAR. A CHANCE OF RAIN SHOWERS AND A SLIGHT  
CHANCE OF THUNDERSTORMS IN THE EVENING. LOWS IN THE 40S.    
JUNETEENTH
 
SUNNY IN THE MORNING THEN BECOMING PARTLY CLOUDY.  
HIGHS NEAR 70.    
SATURDAY
 
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND  
THUNDERSTORMS. HIGHS IN THE 70S. LOWS IN THE MID 40S TO LOWER  
50S.    
SUNDAY
 
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND A SLIGHT  
CHANCE OF THUNDERSTORMS. HIGHS NEAR 70. LOWS NEAR 50.    
MONDAY
 
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. HIGHS IN THE MID 60S TO LOWER 70S. LOWS IN THE  
UPPER 40S.  
 

 
 
MTZ028>042-056>058-063>068-182200-  
SOUTH CENTRAL AND SOUTHEAST MONTANA-  
NATIONAL WEATHER SERVICE BILLINGS MT  
600 AM MDT THU JUN 18 2026  
   
TODAY
 
SUNNY. SLIGHT CHANCE OF THUNDERSTORMS. HIGHS OF AROUND  
70 TO AROUND 80.    
TONIGHT
 
PARTLY CLOUDY. LOWS IN THE LOWER 40S TO THE LOWER 50S.   
JUNETEENTH
 
MOSTLY SUNNY. HIGHS IN THE LOWER 70S TO THE LOWER  
80S.    
FRIDAY NIGHT
 
MOSTLY CLOUDY. LOWS IN THE UPPER 40S TO THE UPPER  
50S.    
SATURDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. HIGHS IN THE LOWER 70S TO THE LOWER 80S.   
SATURDAY NIGHT...MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS WEST
 
 
AND SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS EAST. LOWS IN THE  
UPPER 40S TO THE UPPER 50S.    
SUNDAY...PARTLY SUNNY. CHANCE OF THUNDERSTORMS WEST
 
AND CHANCE  
OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS EAST. HIGHS IN THE  
UPPER 60S TO THE UPPER 70S.    
SUNDAY NIGHT
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS WEST...AND SLIGHT CHANCE OF THUNDERSTORMS  
EAST. LOWS IN THE MID 40S TO THE MID 50S.    
MONDAY
 
PARTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. HIGHS IN THE LOWER 70S.  
 

 
 
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