National Weather Service Forecast for: Donner Summit CA
Issued by: National Weather Service Sacramento, CA
Updated: 11:31 am PDT May 4, 2026
 
This
Afternoon
This Afternoon: Showers and possibly a thunderstorm. High near 43. West southwest wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Showers

 Tonight

Tonight: Rain and possibly a thunderstorm before 5am, then a chance of rain. Low around 32. West wind around 6 mph becoming calm in the evening. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Showers then
Rain Likely
 Tuesday

Tuesday: A chance of rain, mainly before 1pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 54. Calm wind becoming north 5 to 7 mph in the morning. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
Showers
 Tuesday
Night
Tuesday Night: A 30 percent chance of rain before 11pm. Partly cloudy, with a low around 37. West northwest wind 5 to 7 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Chance Rain
then Partly
Cloudy
 Wednesday

Wednesday: Sunny, with a high near 64. Northeast wind 3 to 6 mph.
Sunny

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 40.
Mostly Clear

 Thursday

Thursday: Sunny, with a high near 64.
Sunny

 Thursday
Night
Thursday Night: Mostly clear, with a low around 39.
Mostly Clear

 Friday

Friday: Sunny, with a high near 65.
Sunny
Hi 43 °F Lo 32 °F Hi 54 °F Lo 37 °F Hi 64 °F Lo 40 °F Hi 64 °F Lo 39 °F Hi 65 °F

 

This Afternoon
 
 Showers and possibly a thunderstorm. High near 43. West southwest wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
 
 Rain and possibly a thunderstorm before 5am, then a chance of rain. Low around 32. West wind around 6 mph becoming calm in the evening. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
 
 A chance of rain, mainly before 1pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 54. Calm wind becoming north 5 to 7 mph in the morning. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
 
 A 30 percent chance of rain before 11pm. Partly cloudy, with a low around 37. West northwest wind 5 to 7 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
 
 Sunny, with a high near 64. Northeast wind 3 to 6 mph.
Wednesday Night
 
 Mostly clear, with a low around 40.
Thursday
 
 Sunny, with a high near 64.
Thursday Night
 
 Mostly clear, with a low around 39.
Friday
 
 Sunny, with a high near 65.
Friday Night
 
 Clear, with a low around 39.
Saturday
 
 Sunny, with a high near 69.
Saturday Night
 
 Clear, with a low around 42.
Sunday
 
 Sunny, with a high near 74.

 

Forecast from NOAA-NWS for Donner Summit CA.