National Weather Service Forecast for: Donner Summit CA
Issued by: National Weather Service Sacramento, CA
Updated: 11:31 pm PDT Jun 29, 2026
 
Tonight

Tonight: Clear, with a low around 39. Calm wind.
Clear
 Tuesday

Tuesday: Sunny, with a high near 66. Calm wind becoming west southwest 5 to 9 mph in the morning. Winds could gust as high as 21 mph.
Sunny
 Tuesday
Night
Tuesday Night: Clear, with a low around 39. West southwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Clear
 Wednesday

Wednesday: Sunny, with a high near 67. Calm wind becoming west southwest 5 to 8 mph in the afternoon. Winds could gust as high as 20 mph.
Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 40. West southwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Mostly Clear
 Thursday

Thursday: Mostly sunny, with a high near 67.
Mostly Sunny
 Thursday
Night
Thursday Night: Mostly clear, with a low around 41.
Mostly Clear
 Friday

Friday: Sunny, with a high near 71.
Sunny
 Friday
Night
Friday Night: Clear, with a low around 45.
Clear
Lo 39 °F Hi 66 °F Lo 39 °F Hi 67 °F Lo 40 °F Hi 67 °F Lo 41 °F Hi 71 °F Lo 45 °F

 

Tonight
 
 Clear, with a low around 39. Calm wind.
Tuesday
 
 Sunny, with a high near 66. Calm wind becoming west southwest 5 to 9 mph in the morning. Winds could gust as high as 21 mph.
Tuesday Night
 
 Clear, with a low around 39. West southwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Wednesday
 
 Sunny, with a high near 67. Calm wind becoming west southwest 5 to 8 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
 
 Mostly clear, with a low around 40. West southwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Thursday
 
 Mostly sunny, with a high near 67.
Thursday Night
 
 Mostly clear, with a low around 41.
Friday
 
 Sunny, with a high near 71.
Friday Night
 
 Clear, with a low around 45.
Independence Day
 
 Sunny, with a high near 78.
Saturday Night
 
 Mostly clear, with a low around 48.
Sunday
 
 Sunny, with a high near 77.
Sunday Night
 
 Partly cloudy, with a low around 48.
Monday
 
 Sunny, with a high near 75.

 

Forecast from NOAA-NWS for Donner Summit CA.