FPUS86 KMFR 180939
TVLMFR

FORECAST FOR MOUNTAIN PASSES
NATIONAL WEATHER SERVICE MEDFORD, OR
239 AM PDT MON MAY 18 2026

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CANYON CREEK PASS-
LOCATION...OREGON INTERSTATE 5 NEAR MILEPOST 81
239 AM PDT MON MAY 18 2026

.TODAY...PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS AROUND
67. 
.TONIGHT...MOSTLY CLEAR. LOWS AROUND 38. 
.TUESDAY...SUNNY. HIGHS AROUND 70. 
.TUESDAY NIGHT...MOSTLY CLEAR IN THE EVENING THEN BECOMING PARTLY
CLOUDY. LOWS AROUND 44. 
.WEDNESDAY...PARTLY CLOUDY THEN BECOMING SUNNY IN THE AFTERNOON
THEN BECOMING MOSTLY CLEAR. HIGHS AROUND 70. 

$$

SEXTON SUMMIT-
LOCATION...OREGON INTERSTATE 5 NEAR MILEPOST 69
239 AM PDT MON MAY 18 2026

.TODAY...PARTLY CLOUDY EARLY IN THE MORNING THEN CLEARING. HIGHS
AROUND 65. 
.TONIGHT...CLEAR. LOWS 42-43. 
.TUESDAY...SUNNY. HIGHS 68-69. 
.TUESDAY NIGHT...MOSTLY CLEAR IN THE EVENING THEN BECOMING PARTLY
CLOUDY. LOWS 47-48. 
.WEDNESDAY...SUNNY THEN BECOMING MOSTLY CLEAR. HIGHS AROUND 70. 

$$

HAYES HILL SUMMIT-
LOCATION...OREGON HIGHWAY 199 NEAR MILEPOST 16
239 AM PDT MON MAY 18 2026

.TODAY...PARTLY CLOUDY EARLY IN THE MORNING THEN BECOMING SUNNY.
HIGHS AROUND 72. 
.TONIGHT...MOSTLY CLEAR. LOWS AROUND 41. 
.TUESDAY...SUNNY. HIGHS AROUND 76. 
.TUESDAY NIGHT...MOSTLY CLEAR. LOWS AROUND 46. 
.WEDNESDAY...SUNNY THEN BECOMING MOSTLY CLEAR. HIGHS AROUND 77. 

$$

WILLAMETTE PASS-
LOCATION...OREGON HIGHWAY 58 NEAR MILEPOST 62
239 AM PDT MON MAY 18 2026

.TODAY...MOSTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS 54-56.
.TONIGHT...MOSTLY CLEAR. LOWS 31-35. 
.TUESDAY...SUNNY. HIGHS 59-62. 
.TUESDAY NIGHT...PARTLY CLOUDY. LOWS 36-40. 
.WEDNESDAY...MOSTLY CLEAR. HIGHS 63-66. 

$$

DIAMOND LAKE SUMMIT-
LOCATION...OREGON HIGHWAY 138 NEAR MILEPOST 83
239 AM PDT MON MAY 18 2026

.TODAY...MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY
CLOUDY. HIGHS 55-57. 
.TONIGHT...MOSTLY CLEAR. LOWS AROUND 30. 
.TUESDAY...SUNNY. HIGHS 60-63. 
.TUESDAY NIGHT...PARTLY CLOUDY. LOWS 32-35. 
.WEDNESDAY...MOSTLY CLEAR. HIGHS 65-67. 

$$

CRATER LAKE-
LOCATION...OREGON HIGHWAY 62 NEAR MILEPOST 65
239 AM PDT MON MAY 18 2026

.TODAY...MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY EARLY IN THE
AFTERNOON THEN BECOMING MOSTLY CLOUDY. HIGHS 52-57. 
.TONIGHT...MOSTLY CLEAR. LOWS AROUND 30. 
.TUESDAY...SUNNY. HIGHS 57-62. 
.TUESDAY NIGHT...PARTLY CLOUDY. LOWS 31-35. 
.WEDNESDAY...MOSTLY CLEAR. HIGHS 62-67. 

$$

LAKE OF THE WOODS-
LOCATION...OREGON HIGHWAY 140 NEAR MILEPOST 33
239 AM PDT MON MAY 18 2026

.TODAY...MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY LATE IN THE
MORNING THEN BECOMING SUNNY THEN BECOMING PARTLY CLOUDY LATE IN
THE AFTERNOON. HIGHS AROUND 60. 
.TONIGHT...CLEAR. LOWS 32-34. 
.TUESDAY...SUNNY. HIGHS 63-66. 
.TUESDAY NIGHT...MOSTLY CLEAR. LOWS 36-38. 
.WEDNESDAY...SUNNY THEN BECOMING MOSTLY CLEAR. HIGHS AROUND 70. 

$$

SISKIYOU SUMMIT-
LOCATION...OREGON INTERSTATE 5 NEAR MILEPOST 4
239 AM PDT MON MAY 18 2026

.TODAY...PARTLY CLOUDY IN THE MORNING THEN BECOMING SUNNY. HIGHS
59-64. 
.TONIGHT...CLEAR. LOWS AROUND 40. 
.TUESDAY...SUNNY. HIGHS 62-69. 
.TUESDAY NIGHT...MOSTLY CLEAR. LOWS 43-45. 
.WEDNESDAY...SUNNY THEN BECOMING MOSTLY CLEAR. HIGHS 66-73. 

$$

BLACK BUTTE SUMMIT-
LOCATION...CALIFORNIA INTERSTATE 5 NEAR MILEPOST 742
239 AM PDT MON MAY 18 2026

.TODAY...SUNNY. HIGHS 64-68. 
.TONIGHT...CLEAR. LOWS 37-39. 
.TUESDAY...SUNNY. HIGHS 70-75. 
.TUESDAY NIGHT...MOSTLY CLEAR. LOWS 42-44. 
.WEDNESDAY...SUNNY THEN BECOMING MOSTLY CLEAR. HIGHS 75-78. 

$$

GRASS LAKE/MT HEBRON SUMMIT-
LOCATION...CALIFORNIA HIGHWAY 97 NEAR MILEPOST 20
239 AM PDT MON MAY 18 2026

.TODAY...SUNNY THEN BECOMING PARTLY CLOUDY LATE IN THE MORNING
THEN BECOMING SUNNY. HIGHS 64-65. 
.TONIGHT...CLEAR. LOWS AROUND 32. 
.TUESDAY...SUNNY. HIGHS AROUND 70. 
.TUESDAY NIGHT...MOSTLY CLEAR. LOWS 36-37. 
.WEDNESDAY...SUNNY THEN BECOMING MOSTLY CLEAR. HIGHS 74-75. 

$$

WARNER MOUNTAIN SUMMIT-
LOCATION...OREGON HIGHWAY 140 NEAR MILEPOST 4
239 AM PDT MON MAY 18 2026

.TODAY...MOSTLY CLOUDY. HIGHS 56-57. 
.TONIGHT...MOSTLY CLEAR. LOWS 31-32. 
.TUESDAY...SUNNY. HIGHS 62-64. 
.TUESDAY NIGHT...PARTLY CLOUDY IN THE EVENING THEN CLEARING. LOWS
AROUND 38. 
.WEDNESDAY...PARTLY CLOUDY THEN BECOMING SUNNY IN THE AFTERNOON
THEN BECOMING PARTLY CLOUDY. HIGHS 68-69. 

$$

CEDAR PASS-
LOCATION...CALIFORNIA HIGHWAY 299 NEAR MILEPOST 51
239 AM PDT MON MAY 18 2026

.TODAY...PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY IN THE LATE
MORNING AND EARLY AFTERNOON THEN BECOMING PARTLY CLOUDY. HIGHS
53-55. NORTHEAST WINDS AROUND 20 MPH EARLY IN THE MORNING
BECOMING LIGHT. 
.TONIGHT...MOSTLY CLEAR. LOWS AROUND 36. 
.TUESDAY...SUNNY. HIGHS AROUND 60. 
.TUESDAY NIGHT...MOSTLY CLEAR. LOWS AROUND 41. 
.WEDNESDAY...PARTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY
CLEAR. HIGHS 64-66. 

$$

VISIT US AT WWW.WEATHER.GOV/MEDFORD