380  
FPUS86 KMFR 180943  
TVLMFR  
 
FORECAST FOR MOUNTAIN PASSES  
NATIONAL WEATHER SERVICE MEDFORD, OR  
243 AM PDT THU SEP 18 2025  
 

 
 
CANYON CREEK PASS-  
LOCATION...OREGON INTERSTATE 5 NEAR MILEPOST 81  
243 AM PDT THU SEP 18 2025  
   
TODAY
 
MOSTLY CLOUDY EARLY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS AROUND 73.    
TONIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY  
CLOUDY. LOWS AROUND 50.    
FRIDAY
 
PARTLY CLOUDY. HIGHS AROUND 80.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS AROUND 54.    
SATURDAY
 
SUNNY THEN BECOMING MOSTLY CLEAR. HIGHS AROUND 81.  
 

 
 
SEXTON SUMMIT-  
LOCATION...OREGON INTERSTATE 5 NEAR MILEPOST 69  
243 AM PDT THU SEP 18 2025  
   
TODAY
 
PARTLY CLOUDY THEN BECOMING SUNNY IN THE LATE MORNING  
AND EARLY AFTERNOON THEN BECOMING PARTLY CLOUDY. HIGHS 68-69.    
TONIGHT
 
PARTLY CLOUDY. LOWS 54-55.    
FRIDAY
 
PARTLY CLOUDY. HIGHS 75-76.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS 58-59.    
SATURDAY
 
SUNNY THEN BECOMING MOSTLY CLEAR. HIGHS 77-78.  
 

 
 
HAYES HILL SUMMIT-  
LOCATION...OREGON HIGHWAY 199 NEAR MILEPOST 16  
243 AM PDT THU SEP 18 2025  
   
TODAY
 
SUNNY UNTIL EARLY AFTERNOON THEN BECOMING PARTLY CLOUDY.  
HIGHS AROUND 81.    
TONIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY  
CLOUDY. LOWS AROUND 52.    
FRIDAY
 
PARTLY CLOUDY. HIGHS AROUND 86.    
FRIDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY  
CLOUDY. LOWS AROUND 55.    
SATURDAY
 
MOSTLY CLEAR. HIGHS AROUND 86.  
 

 
 
WILLAMETTE PASS-  
LOCATION...OREGON HIGHWAY 58 NEAR MILEPOST 62  
243 AM PDT THU SEP 18 2025  
   
TODAY
 
SUNNY. HIGHS 71-73.    
TONIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY  
CLOUDY. LOWS AROUND 50.    
FRIDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS 70-73.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS 47-51.    
SATURDAY
 
PARTLY CLOUDY THEN BECOMING MOSTLY CLEAR. HIGHS  
66-69.  
 

 
 
DIAMOND LAKE SUMMIT-  
LOCATION...OREGON HIGHWAY 138 NEAR MILEPOST 83  
243 AM PDT THU SEP 18 2025  
   
TODAY
 
SUNNY IN THE MORNING THEN BECOMING PARTLY CLOUDY. HIGHS  
73-76.    
TONIGHT
 
MOSTLY CLOUDY. LOWS 48-49.    
FRIDAY
 
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN  
THE AFTERNOON. HIGHS 71-74.    
FRIDAY NIGHT
 
MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS IN  
THE EVENING. LOWS 47-49.    
SATURDAY
 
PARTLY CLOUDY THEN CLEARING. SLIGHT CHANCE OF  
THUNDERSTORMS. HIGHS AROUND 70.  
 

 
 
CRATER LAKE-  
LOCATION...OREGON HIGHWAY 62 NEAR MILEPOST 65  
243 AM PDT THU SEP 18 2025  
   
TODAY
 
SUNNY UNTIL EARLY AFTERNOON THEN BECOMING PARTLY CLOUDY.  
HIGHS 70-74.    
TONIGHT
 
MOSTLY CLOUDY. LOWS 46-47.    
FRIDAY
 
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN  
THE AFTERNOON. HIGHS 68-72.    
FRIDAY NIGHT
 
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF  
THUNDERSTORMS IN THE EVENING. LOWS 45-47.    
SATURDAY
 
PARTLY CLOUDY THEN CLEARING. SLIGHT CHANCE OF  
THUNDERSTORMS. HIGHS 64-69.  
 

 
 
LAKE OF THE WOODS-  
LOCATION...OREGON HIGHWAY 140 NEAR MILEPOST 33  
243 AM PDT THU SEP 18 2025  
   
TODAY
 
SUNNY EARLY IN THE MORNING THEN BECOMING PARTLY CLOUDY.  
HIGHS 74-77.    
TONIGHT
 
MOSTLY CLOUDY. LOWS 48-49.    
FRIDAY
 
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN  
THE AFTERNOON. HIGHS 71-74.    
FRIDAY NIGHT
 
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF  
THUNDERSTORMS IN THE EVENING. LOWS AROUND 50.    
SATURDAY
 
PARTLY CLOUDY THEN CLEARING. SLIGHT CHANCE OF  
THUNDERSTORMS. HIGHS 69-74.  
 

 
 
SISKIYOU SUMMIT-  
LOCATION...OREGON INTERSTATE 5 NEAR MILEPOST 4  
243 AM PDT THU SEP 18 2025  
   
TODAY
 
SUNNY EARLY IN THE MORNING THEN BECOMING PARTLY CLOUDY.  
HIGHS 72-80.    
TONIGHT
 
MOSTLY CLOUDY. LOWS 53-56.    
FRIDAY
 
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN  
THE AFTERNOON. HIGHS 72-79.    
FRIDAY NIGHT
 
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF  
THUNDERSTORMS IN THE EVENING. LOWS 56-58.    
SATURDAY
 
PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY IN THE  
AFTERNOON THEN BECOMING MOSTLY CLEAR. SLIGHT CHANCE OF  
THUNDERSTORMS. HIGHS 71-79.  
 

 
 
BLACK BUTTE SUMMIT-  
LOCATION...CALIFORNIA INTERSTATE 5 NEAR MILEPOST 742  
243 AM PDT THU SEP 18 2025  
   
TODAY
 
PARTLY CLOUDY UNTIL EARLY AFTERNOON THEN BECOMING MOSTLY  
CLOUDY. HIGHS 81-84.    
TONIGHT
 
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF  
THUNDERSTORMS. LOWS 53-56.    
FRIDAY
 
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF  
THUNDERSTORMS. HIGHS 75-78.    
FRIDAY NIGHT
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF  
THUNDERSTORMS. LOWS 53-56.    
SATURDAY
 
PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY IN THE  
AFTERNOON THEN BECOMING PARTLY CLOUDY. A 30 PERCENT CHANCE OF  
THUNDERSTORMS. HIGHS 76-79.  
 

 
 
GRASS LAKE/MT HEBRON SUMMIT-  
LOCATION...CALIFORNIA HIGHWAY 97 NEAR MILEPOST 20  
243 AM PDT THU SEP 18 2025  
   
TODAY
 
PARTLY CLOUDY UNTIL EARLY AFTERNOON THEN BECOMING MOSTLY  
CLOUDY. HIGHS AROUND 80.    
TONIGHT
 
MOSTLY CLOUDY WITH A 10 PERCENT CHANCE OF  
THUNDERSTORMS. LOWS 47-48.    
FRIDAY
 
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF  
THUNDERSTORMS. HIGHS 76-77.    
FRIDAY NIGHT
 
MOSTLY CLOUDY. A 30 PERCENT CHANCE OF  
THUNDERSTORMS IN THE EVENING. LOWS AROUND 47.    
SATURDAY
 
PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY IN THE  
AFTERNOON THEN BECOMING MOSTLY CLEAR. A 30 PERCENT CHANCE OF  
THUNDERSTORMS. HIGHS 74-76.  
 

 
 
WARNER MOUNTAIN SUMMIT-  
LOCATION...OREGON HIGHWAY 140 NEAR MILEPOST 4  
243 AM PDT THU SEP 18 2025  
   
TODAY
 
PARTLY CLOUDY EARLY IN THE MORNING THEN BECOMING MOSTLY  
CLOUDY. HIGHS 78-79.    
TONIGHT
 
MOSTLY CLOUDY. LOWS AROUND 52.    
FRIDAY
 
MOSTLY CLOUDY. HIGHS 73-74.    
FRIDAY NIGHT
 
MOSTLY CLOUDY. LOWS AROUND 50.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS. HIGHS 71-73.  
 

 
 
CEDAR PASS-  
LOCATION...CALIFORNIA HIGHWAY 299 NEAR MILEPOST 51  
243 AM PDT THU SEP 18 2025  
   
TODAY
 
MOSTLY CLOUDY. HIGHS 73-76.    
TONIGHT
 
CLOUDY. LOWS AROUND 54.    
FRIDAY
 
CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS IN THE  
AFTERNOON. HIGHS 66-69.    
FRIDAY NIGHT
 
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF  
THUNDERSTORMS IN THE EVENING. LOWS AROUND 51.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS. HIGHS 65-68.  
 

 
 
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