National Weather Service Forecast for: Donner Summit CA
Issued by: National Weather Service Sacramento, CA
Updated: 2:20 am PDT Mar 19, 2026
 
This
Afternoon
This Afternoon: Sunny, with a high near 73. West southwest wind 3 to 5 mph.
Sunny
 Tonight

Tonight: Clear, with a low around 45. Light and variable wind.
Clear
 Friday

Friday: Sunny, with a high near 74. Light and variable wind becoming west southwest 5 to 8 mph in the afternoon.
Sunny
 Friday
Night
Friday Night: Mostly clear, with a low around 42. South southwest wind 3 to 8 mph.
Mostly Clear
 Saturday

Saturday: Mostly sunny, with a high near 66. Light south wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph.
Mostly Sunny
 Saturday
Night
Saturday Night: Partly cloudy, with a low around 38.
Partly Cloudy
 Sunday

Sunday: Sunny, with a high near 67.
Sunny
 Sunday
Night
Sunday Night: Mostly clear, with a low around 39.
Mostly Clear
 Monday

Monday: Mostly sunny, with a high near 67.
Mostly Sunny
Hi 73 °F Lo 45 °F Hi 74 °F Lo 42 °F Hi 66 °F Lo 38 °F Hi 67 °F Lo 39 °F Hi 67 °F

 

This Afternoon
 
 Sunny, with a high near 73. West southwest wind 3 to 5 mph.
Tonight
 
 Clear, with a low around 45. Light and variable wind.
Friday
 
 Sunny, with a high near 74. Light and variable wind becoming west southwest 5 to 8 mph in the afternoon.
Friday Night
 
 Mostly clear, with a low around 42. South southwest wind 3 to 8 mph.
Saturday
 
 Mostly sunny, with a high near 66. Light south wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph.
Saturday Night
 
 Partly cloudy, with a low around 38.
Sunday
 
 Sunny, with a high near 67.
Sunday Night
 
 Mostly clear, with a low around 39.
Monday
 
 Mostly sunny, with a high near 67.
Monday Night
 
 Partly cloudy, with a low around 40.
Tuesday
 
 Sunny, with a high near 68.
Tuesday Night
 
 Mostly clear, with a low around 39.
Wednesday
 
 Sunny, with a high near 61.

 

Forecast from NOAA-NWS for Donner Summit CA.