931  
FPUS86 KMFR 041353  
TVLMFR  
 
FORECAST FOR MOUNTAIN PASSES  
NATIONAL WEATHER SERVICE MEDFORD, OR  
653 AM PDT MON MAY 4 2026  
 
 
 
CANYON CREEK PASS-  
LOCATION...OREGON INTERSTATE 5 NEAR MILEPOST 81  
653 AM PDT MON MAY 4 2026  
   
TODAY  
MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY EARLY IN THE  
AFTERNOON THEN BECOMING SUNNY. HIGHS AROUND 70.    
TONIGHT  
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY  
CLOUDY. LOWS AROUND 49.    
TUESDAY  
MOSTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS  
AROUND 74.    
TUESDAY NIGHT  
MOSTLY CLEAR. LOWS AROUND 49.    
WEDNESDAY  
SUNNY THEN BECOMING MOSTLY CLEAR. HIGHS AROUND 79.  
 
 
 
SEXTON SUMMIT-  
LOCATION...OREGON INTERSTATE 5 NEAR MILEPOST 69  
653 AM PDT MON MAY 4 2026  
   
TODAY  
MOSTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS 64-65.   
TONIGHT  
PARTLY CLOUDY. LOWS AROUND 48.    
TUESDAY  
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS  
AROUND 70.    
TUESDAY NIGHT  
MOSTLY CLEAR. LOWS AROUND 50.    
WEDNESDAY  
SUNNY IN THE MORNING THEN BECOMING CLEAR. HIGHS  
74-75.  
 
 
 
HAYES HILL SUMMIT-  
LOCATION...OREGON HIGHWAY 199 NEAR MILEPOST 16  
653 AM PDT MON MAY 4 2026  
   
TODAY  
MOSTLY CLOUDY EARLY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS AROUND 72.    
TONIGHT  
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY  
CLEAR. LOWS AROUND 48.    
TUESDAY  
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS  
AROUND 79.    
TUESDAY NIGHT  
MOSTLY CLEAR. LOWS AROUND 49.    
WEDNESDAY  
SUNNY THEN BECOMING MOSTLY CLEAR. HIGHS AROUND 84.  
 
 
 
WILLAMETTE PASS-  
LOCATION...OREGON HIGHWAY 58 NEAR MILEPOST 62  
653 AM PDT MON MAY 4 2026  
   
TODAY  
SUNNY. HIGHS 66-67.    
TONIGHT  
MOSTLY CLEAR. LOWS 42-46.    
TUESDAY  
SUNNY. HIGHS 66-67.    
TUESDAY NIGHT  
MOSTLY CLEAR. LOWS 43-46.    
WEDNESDAY  
SUNNY THEN BECOMING MOSTLY CLEAR. HIGHS AROUND 70.  
 
 
 
DIAMOND LAKE SUMMIT-  
LOCATION...OREGON HIGHWAY 138 NEAR MILEPOST 83  
653 AM PDT MON MAY 4 2026  
   
TODAY  
SUNNY UNTIL EARLY AFTERNOON THEN BECOMING PARTLY CLOUDY.  
A 10 PERCENT CHANCE OF RAIN IN THE AFTERNOON. HIGHS 65-68.    
TONIGHT  
MOSTLY CLEAR. LOWS AROUND 40.    
TUESDAY  
SUNNY. HIGHS 65-67.    
TUESDAY NIGHT  
MOSTLY CLEAR. LOWS AROUND 40.    
WEDNESDAY  
SUNNY THEN BECOMING MOSTLY CLEAR. HIGHS AROUND 70.  
 
 
 
CRATER LAKE-  
LOCATION...OREGON HIGHWAY 62 NEAR MILEPOST 65  
653 AM PDT MON MAY 4 2026  
   
TODAY  
SUNNY IN THE MORNING, THEN PARTLY CLOUDY WITH A  
10 PERCENT CHANCE OF RAIN IN THE AFTERNOON. HIGHS 62-67.    
TONIGHT  
MOSTLY CLEAR. LOWS 37-42.    
TUESDAY  
SUNNY. HIGHS 61-67.    
TUESDAY NIGHT  
MOSTLY CLEAR. LOWS 38-42.    
WEDNESDAY  
SUNNY THEN BECOMING MOSTLY CLEAR. HIGHS 65-70.  
 
 
 
LAKE OF THE WOODS-  
LOCATION...OREGON HIGHWAY 140 NEAR MILEPOST 33  
653 AM PDT MON MAY 4 2026  
   
TODAY  
SUNNY IN THE MORNING, THEN PARTLY CLOUDY WITH A  
10 PERCENT CHANCE OF RAIN IN THE AFTERNOON. HIGHS 64-67.    
TONIGHT  
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN IN THE  
EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT. LOWS 42-43.    
TUESDAY  
SUNNY. HIGHS 66-69.    
TUESDAY NIGHT  
CLEAR. LOWS 42-43.    
WEDNESDAY  
CLEAR. HIGHS 70-72.  
 
 
 
SISKIYOU SUMMIT-  
LOCATION...OREGON INTERSTATE 5 NEAR MILEPOST 4  
653 AM PDT MON MAY 4 2026  
   
TODAY  
MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY LATE IN THE  
MORNING THEN BECOMING SUNNY THEN BECOMING PARTLY CLOUDY LATE IN  
THE AFTERNOON. HIGHS 61-67. NORTHWEST WINDS AROUND 20 MPH LATE IN  
THE AFTERNOON.    
TONIGHT  
PARTLY CLOUDY. A 10 PERCENT CHANCE OF RAIN IN THE  
EVENING. LOWS 46-49. NORTH WINDS AROUND 20 MPH IN THE EVENING  
BECOMING LIGHT.    
TUESDAY  
PARTLY CLOUDY IN THE MORNING THEN BECOMING SUNNY.  
HIGHS 65-71.    
TUESDAY NIGHT  
CLEAR. LOWS AROUND 50.    
WEDNESDAY  
SUNNY IN THE MORNING THEN BECOMING CLEAR. HIGHS  
71-77.  
 
 
 
BLACK BUTTE SUMMIT-  
LOCATION...CALIFORNIA INTERSTATE 5 NEAR MILEPOST 742  
653 AM PDT MON MAY 4 2026  
   
TODAY  
MOSTLY CLOUDY IN THE MORNING, THEN PARTLY CLOUDY WITH A  
CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE  
AFTERNOON. HIGHS 63-68. CHANCE OF PRECIPITATION 30 PERCENT.    
TONIGHT  
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER  
MIDNIGHT. LOWS 44-46. CHANCE OF PRECIPITATION 20 PERCENT.    
TUESDAY  
PARTLY CLOUDY IN THE MORNING THEN BECOMING SUNNY.  
HIGHS 69-73.    
TUESDAY NIGHT  
MOSTLY CLEAR. LOWS 46-47.    
WEDNESDAY  
SUNNY THEN BECOMING MOSTLY CLEAR. HIGHS 75-79.  
 
 
 
GRASS LAKE/MT HEBRON SUMMIT-  
LOCATION...CALIFORNIA HIGHWAY 97 NEAR MILEPOST 20  
653 AM PDT MON MAY 4 2026  
   
TODAY  
MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY IN THE LATE  
MORNING AND EARLY AFTERNOON THEN BECOMING MOSTLY CLOUDY. CHANCE  
OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.  
HIGHS AROUND 70. CHANCE OF PRECIPITATION 30 PERCENT.    
TONIGHT  
PARTLY CLOUDY WITH A CHANCE OF SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR AFTER  
MIDNIGHT. LOWS AROUND 42. CHANCE OF PRECIPITATION 20 PERCENT.    
TUESDAY  
SUNNY. HIGHS 71-72.    
TUESDAY NIGHT  
MOSTLY CLEAR. LOWS 42-43.    
WEDNESDAY  
CLEAR. HIGHS 76-78.  
 
 
 
WARNER MOUNTAIN SUMMIT-  
LOCATION...OREGON HIGHWAY 140 NEAR MILEPOST 4  
653 AM PDT MON MAY 4 2026  
   
TODAY  
SUNNY. HIGHS AROUND 70.    
TONIGHT  
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY  
CLEAR. LOWS AROUND 45.    
TUESDAY  
SUNNY. HIGHS 67-69. NORTH WINDS AROUND 20 MPH IN THE  
AFTERNOON.    
TUESDAY NIGHT  
MOSTLY CLEAR. LOWS AROUND 44.    
WEDNESDAY  
SUNNY THEN BECOMING MOSTLY CLEAR. HIGHS 70-72.  
 
 
 
CEDAR PASS-  
LOCATION...CALIFORNIA HIGHWAY 299 NEAR MILEPOST 51  
653 AM PDT MON MAY 4 2026  
   
TODAY  
PARTLY CLOUDY IN THE MORNING, THEN MOSTLY CLOUDY WITH A  
CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE  
AFTERNOON. HIGHS 63-65. CHANCE OF PRECIPITATION 30 PERCENT.    
TONIGHT  
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF RAIN IN THE  
EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. LOWS 43-44.    
TUESDAY  
PARTLY CLOUDY IN THE MORNING THEN BECOMING SUNNY.  
HIGHS 64-65.    
TUESDAY NIGHT  
PARTLY CLOUDY IN THE EVENING THEN BECOMING  
MOSTLY CLEAR. LOWS 43-44. NORTH WINDS AROUND 20 MPH IN THE  
EVENING BECOMING LIGHT.    
WEDNESDAY  
SUNNY THEN BECOMING MOSTLY CLEAR. HIGHS 65-67.  
 
 
 
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