261
FPUS86 KMFR 012126
TVLMFR

FORECAST FOR MOUNTAIN PASSES
NATIONAL WEATHER SERVICE MEDFORD, OR
226 PM PDT MON SEP 1 2025

$$

CANYON CREEK PASS-
LOCATION...OREGON INTERSTATE 5 NEAR MILEPOST 81
226 PM PDT MON SEP 1 2025

.TONIGHT...MOSTLY CLEAR. LOWS AROUND 55.
.TUESDAY...SUNNY. SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS AROUND 96.
.TUESDAY NIGHT...MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
LOWS AROUND 61.
.WEDNESDAY AND WEDNESDAY NIGHT...PARTLY CLOUDY. HIGHS AROUND 92.
LOWS AROUND 60.
.THURSDAY...PARTLY CLOUDY THEN BECOMING SUNNY IN THE AFTERNOON
THEN BECOMING PARTLY CLOUDY. HIGHS AROUND 92.

$$

SEXTON SUMMIT-
LOCATION...OREGON INTERSTATE 5 NEAR MILEPOST 69
226 PM PDT MON SEP 1 2025

.TONIGHT...MOSTLY CLEAR. LOWS AROUND 60.
.TUESDAY...SUNNY. SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS AROUND 90.
.TUESDAY NIGHT...AREAS OF SMOKE IN THE EVENING. MOSTLY CLOUDY
WITH A 20 PERCENT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN
PARTLY CLOUDY AFTER MIDNIGHT. LOWS 65-67.
.WEDNESDAY...PARTLY CLOUDY. HIGHS 87-88.
.WEDNESDAY NIGHT...PARTLY CLOUDY IN THE EVENING THEN BECOMING
MOSTLY CLEAR. LOWS 64-65.
.THURSDAY...PARTLY CLOUDY. HIGHS AROUND 87.

$$

HAYES HILL SUMMIT-
LOCATION...OREGON HIGHWAY 199 NEAR MILEPOST 16
226 PM PDT MON SEP 1 2025

.TONIGHT...MOSTLY CLEAR. AREAS OF SMOKE. LOWS AROUND 55.
.TUESDAY...SUNNY. AREAS OF SMOKE THROUGH THE DAY. SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. HIGHS AROUND 101.
.TUESDAY NIGHT...PARTLY CLOUDY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING. LOWS AROUND 61.
.WEDNESDAY...PARTLY CLOUDY. HIGHS AROUND 98.
.WEDNESDAY NIGHT...PARTLY CLOUDY IN THE EVENING THEN BECOMING
MOSTLY CLEAR. LOWS AROUND 59.
.THURSDAY...PARTLY CLOUDY. HIGHS AROUND 96.

$$

WILLAMETTE PASS-
LOCATION...OREGON HIGHWAY 58 NEAR MILEPOST 62
226 PM PDT MON SEP 1 2025

.TONIGHT...PARTLY CLOUDY EARLY IN THE EVENING THEN CLEARING.
AREAS OF SMOKE. LOWS 50-54.
.TUESDAY...SUNNY IN THE MORNING THEN BECOMING PARTLY CLOUDY.
AREAS OF SMOKE IN THE MORNING. A 20 PERCENT CHANCE OF
THUNDERSTORMS. HIGHS 81-84.
.TUESDAY NIGHT...MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS. LOWS 56-59.
.WEDNESDAY...MOSTLY CLOUDY. A 30 PERCENT CHANCE OF THUNDERSTORMS
IN THE AFTERNOON. HIGHS AROUND 80.
.WEDNESDAY NIGHT...PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT.
LOWS 54-57.
.THURSDAY...PARTLY CLOUDY IN THE MORNING, THEN MOSTLY CLOUDY WITH
A 30 PERCENT CHANCE OF THUNDERSTORMS IN THE AFTERNOON AND
EVENING. HIGHS AROUND 80.

$$

DIAMOND LAKE SUMMIT-
LOCATION...OREGON HIGHWAY 138 NEAR MILEPOST 83
226 PM PDT MON SEP 1 2025

.TONIGHT...MOSTLY CLEAR. AREAS OF SMOKE AFTER MIDNIGHT. LOWS
51-52.
.TUESDAY...SUNNY IN THE MORNING THEN BECOMING PARTLY CLOUDY.
AREAS OF SMOKE IN THE MORNING. A 20 PERCENT CHANCE OF
THUNDERSTORMS. HIGHS 83-85.
.TUESDAY NIGHT...MOSTLY CLOUDY. AREAS OF SMOKE IN THE EVENING.
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN CHANCE OF SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. LOWS 55-56.
CHANCE OF PRECIPITATION 30 PERCENT.
.WEDNESDAY...MOSTLY CLOUDY. A 40 PERCENT CHANCE OF THUNDERSTORMS
IN THE AFTERNOON. HIGHS AROUND 80.
.WEDNESDAY NIGHT...PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT.
LOWS 54-56.
.THURSDAY...SUNNY IN THE MORNING, THEN PARTLY CLOUDY WITH A
30 PERCENT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. MOSTLY
CLOUDY IN THE EVENING. HIGHS AROUND 80.

$$

CRATER LAKE-
LOCATION...OREGON HIGHWAY 62 NEAR MILEPOST 65
226 PM PDT MON SEP 1 2025

.TONIGHT...MOSTLY CLEAR. AREAS OF SMOKE AFTER MIDNIGHT. LOWS
AROUND 50.
.TUESDAY...SUNNY IN THE MORNING THEN BECOMING PARTLY CLOUDY.
AREAS OF SMOKE IN THE MORNING. A 20 PERCENT CHANCE OF
THUNDERSTORMS. HIGHS 78-83.
.TUESDAY NIGHT...MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF
THUNDERSTORMS. LOWS 52-53.
.WEDNESDAY...PARTLY CLOUDY IN THE MORNING, THEN MOSTLY CLOUDY
WITH A 40 PERCENT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS
75-79.
.WEDNESDAY NIGHT...MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT.
LOWS 51-53.
.THURSDAY...SUNNY THEN BECOMING PARTLY CLOUDY IN THE AFTERNOON
THEN BECOMING MOSTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS
IN THE AFTERNOON. HIGHS 74-79.

$$

LAKE OF THE WOODS-
LOCATION...OREGON HIGHWAY 140 NEAR MILEPOST 33
226 PM PDT MON SEP 1 2025

.TONIGHT...CLEAR. AREAS OF SMOKE AFTER MIDNIGHT. LOWS 50-53.
.TUESDAY...SUNNY IN THE MORNING THEN BECOMING MOSTLY CLOUDY.
AREAS OF SMOKE IN THE MORNING. A 30 PERCENT CHANCE OF
THUNDERSTORMS. HIGHS 84-87.
.TUESDAY NIGHT...MOSTLY CLOUDY WITH A CHANCE OF THUNDERSTORMS IN
THE EVENING, THEN PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS
AFTER MIDNIGHT. LOWS 53-57. CHANCE OF PRECIPITATION 30 PERCENT.
.WEDNESDAY...PARTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS
IN THE AFTERNOON. HIGHS 81-84.
.WEDNESDAY NIGHT...PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT.
LOWS 53-56.
.THURSDAY...SUNNY IN THE MORNING THEN BECOMING PARTLY CLOUDY.
HIGHS 80-84.

$$

SISKIYOU SUMMIT-
LOCATION...OREGON INTERSTATE 5 NEAR MILEPOST 4
226 PM PDT MON SEP 1 2025

.TONIGHT...CLEAR. AREAS OF SMOKE. LOWS 59-62.
.TUESDAY...SUNNY IN THE MORNING THEN BECOMING PARTLY CLOUDY.
CHANCE OF THUNDERSTORMS. HIGHS 85-91.
.TUESDAY NIGHT...MOSTLY CLOUDY WITH A CHANCE OF THUNDERSTORMS IN
THE EVENING, THEN PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS
AFTER MIDNIGHT. LOWS 62-66. CHANCE OF PRECIPITATION 30 PERCENT.
.WEDNESDAY...PARTLY CLOUDY IN THE MORNING THEN BECOMING SUNNY.
HIGHS 82-89.
.WEDNESDAY NIGHT...PARTLY CLOUDY IN THE EVENING THEN CLEARING.
LOWS 61-64.
.THURSDAY...SUNNY IN THE MORNING THEN BECOMING PARTLY CLOUDY.
HIGHS 80-88.

$$

BLACK BUTTE SUMMIT-
LOCATION...CALIFORNIA INTERSTATE 5 NEAR MILEPOST 742
226 PM PDT MON SEP 1 2025

.TONIGHT...CLEAR. AREAS OF SMOKE. LOWS AROUND 60.
.TUESDAY...SUNNY IN THE MORNING THEN BECOMING PARTLY CLOUDY.
SLIGHT CHANCE OF THUNDERSTORMS. HIGHS AROUND 90.
.TUESDAY NIGHT...MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS. LOWS AROUND
60.
.WEDNESDAY AND WEDNESDAY NIGHT...MOSTLY CLEAR. HIGHS 85-89. LOWS
AROUND 60.
.THURSDAY...SUNNY IN THE MORNING THEN BECOMING PARTLY CLOUDY.
HIGHS 85-87.

$$

GRASS LAKE/MT HEBRON SUMMIT-
LOCATION...CALIFORNIA HIGHWAY 97 NEAR MILEPOST 20
226 PM PDT MON SEP 1 2025

.TONIGHT...CLEAR. AREAS OF SMOKE. LOWS 51-52.
.TUESDAY...SUNNY IN THE MORNING THEN BECOMING MOSTLY CLOUDY. A
30 PERCENT CHANCE OF THUNDERSTORMS. HIGHS 87-88.
.TUESDAY NIGHT...MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. A 30 PERCENT CHANCE OF THUNDERSTORMS. LOWS 51-52.
.WEDNESDAY...SUNNY IN THE MORNING, THEN PARTLY CLOUDY WITH A
20 PERCENT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 84-86.
.WEDNESDAY NIGHT...PARTLY CLOUDY IN THE EVENING THEN BECOMING
MOSTLY CLEAR. LOWS AROUND 52.
.THURSDAY...SUNNY IN THE MORNING THEN BECOMING PARTLY CLOUDY.
HIGHS 84-85.

$$

WARNER MOUNTAIN SUMMIT-
LOCATION...OREGON HIGHWAY 140 NEAR MILEPOST 4
226 PM PDT MON SEP 1 2025

.TONIGHT...MOSTLY CLEAR. LOWS 55-57.
.TUESDAY...SUNNY IN THE MORNING THEN BECOMING PARTLY CLOUDY. A
20 PERCENT CHANCE OF THUNDERSTORMS. HIGHS 85-87.
.TUESDAY NIGHT...MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF
THUNDERSTORMS. LOWS 55-56.
.WEDNESDAY AND WEDNESDAY NIGHT...PARTLY CLOUDY WITH A 20 PERCENT
CHANCE OF THUNDERSTORMS. HIGHS 81-82. LOWS 55-57.
.THURSDAY...PARTLY CLOUDY IN THE MORNING, THEN MOSTLY CLOUDY WITH
A 20 PERCENT CHANCE OF THUNDERSTORMS IN THE AFTERNOON AND
EVENING. HIGHS 82-83.

$$

CEDAR PASS-
LOCATION...CALIFORNIA HIGHWAY 299 NEAR MILEPOST 51
226 PM PDT MON SEP 1 2025

.TONIGHT...MOSTLY CLEAR. LOWS AROUND 57.
.TUESDAY...SUNNY IN THE MORNING THEN BECOMING MOSTLY CLOUDY. A
30 PERCENT CHANCE OF THUNDERSTORMS. HIGHS 79-82.
.TUESDAY NIGHT...MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS IN THE
EVENING, THEN CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT. LOWS 56-57. CHANCE OF PRECIPITATION
30 PERCENT.
.WEDNESDAY...PARTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS
IN THE AFTERNOON. HIGHS 75-79.
.WEDNESDAY NIGHT...PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT.
LOWS 56-57.
.THURSDAY...SUNNY THEN BECOMING PARTLY CLOUDY IN THE AFTERNOON
THEN BECOMING MOSTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS
IN THE AFTERNOON AND EVENING. HIGHS 76-79.

$$

VISIT US AT WWW.WEATHER.GOV/MEDFORD