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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