National Weather Service Forecast for: Penn Valley CA
Issued by: National Weather Service Sacramento, CA
Updated: 2:01 pm PDT Sep 12, 2026
 
Tonight

Tonight: Clear, with a low around 55. South southeast wind 5 to 8 mph becoming calm after midnight.
Clear
 Sunday

Sunday: Widespread haze between 9am and noon. Sunny, with a high near 77. Calm wind becoming west around 5 mph in the afternoon.
Haze then
Sunny
 Sunday
Night
Sunday Night: Clear, with a low around 56. Light and variable wind.
Clear
 Monday

Monday: Sunny, with a high near 85. East northeast wind around 5 mph becoming light and variable.
Sunny
 Monday
Night
Monday Night: Clear, with a low around 59. Light and variable wind.
Clear
 Tuesday

Tuesday: Sunny, with a high near 85.
Sunny
 Tuesday
Night
Tuesday Night: Clear, with a low around 60.
Clear
 Wednesday

Wednesday: Sunny, with a high near 85.
Sunny
 Wednesday
Night
Wednesday Night: Clear, with a low around 61.
Clear
Lo 55 °F Hi 77 °F Lo 56 °F Hi 85 °F Lo 59 °F Hi 85 °F Lo 60 °F Hi 85 °F Lo 61 °F

 

Tonight
 
 Clear, with a low around 55. South southeast wind 5 to 8 mph becoming calm after midnight.
Sunday
 
 Widespread haze between 9am and noon. Sunny, with a high near 77. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
 
 Clear, with a low around 56. Light and variable wind.
Monday
 
 Sunny, with a high near 85. East northeast wind around 5 mph becoming light and variable.
Monday Night
 
 Clear, with a low around 59. Light and variable wind.
Tuesday
 
 Sunny, with a high near 85.
Tuesday Night
 
 Clear, with a low around 60.
Wednesday
 
 Sunny, with a high near 85.
Wednesday Night
 
 Clear, with a low around 61.
Thursday
 
 Sunny, with a high near 87.
Thursday Night
 
 Mostly clear, with a low around 61.
Friday
 
 Sunny, with a high near 88.
Friday Night
 
 Mostly clear, with a low around 62.
Saturday
 
 Sunny, with a high near 86.

 

Forecast from NOAA-NWS for Penn Valley CA.