National Weather Service Forecast for: Penn Valley CA
Issued by: National Weather Service Sacramento, CA
Updated: 1:21 am PST Dec 22, 2025
 
Overnight

Overnight: Showers and possibly a thunderstorm. Patchy fog. Steady temperature around 53. South wind around 8 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers and
Patchy Fog
 Monday

Monday: Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. Patchy fog. High near 53. South wind around 7 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Showers and
Patchy Fog
 Monday
Night
Monday Night: Showers likely, mainly before midnight. Widespread dense fog, mainly between 1am and 5am. Otherwise, cloudy, with a steady temperature around 51. Calm wind. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.
Showers
Likely and
Dense Fog
 Tuesday

Tuesday: A 50 percent chance of showers. Cloudy, with a high near 55. South wind 5 to 10 mph, with gusts as high as 24 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Chance
Showers
 Tuesday
Night
Tuesday Night: Showers. Patchy fog between 9pm and 1am. Low around 47. South southeast wind 14 to 16 mph, with gusts as high as 37 mph. Chance of precipitation is 100%.
Showers and
Patchy Fog
 Wednesday

Wednesday: Showers. Patchy fog before 11am. High near 50. Chance of precipitation is 90%.
Showers and
Patchy Fog
 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm. Low around 45. Chance of precipitation is 100%.
Showers

 Christmas
Day
Christmas Day: Showers. Cloudy, with a high near 47.
Showers

 Thursday
Night
Thursday Night: Showers. Cloudy, with a low around 41.
Showers
Lo 53 °F Hi 53 °F Lo 51 °F Hi 55 °F Lo 47 °F Hi 50 °F Lo 45 °F Hi 47 °F Lo 41 °F

Flood Advisory
Flood Watch
 

Overnight
 
 Showers and possibly a thunderstorm. Patchy fog. Steady temperature around 53. South wind around 8 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
 
 Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. Patchy fog. High near 53. South wind around 7 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Monday Night
 
 Showers likely, mainly before midnight. Widespread dense fog, mainly between 1am and 5am. Otherwise, cloudy, with a steady temperature around 51. Calm wind. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
 
 A 50 percent chance of showers. Cloudy, with a high near 55. South wind 5 to 10 mph, with gusts as high as 24 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
 
 Showers. Patchy fog between 9pm and 1am. Low around 47. South southeast wind 14 to 16 mph, with gusts as high as 37 mph. Chance of precipitation is 100%.
Wednesday
 
 Showers. Patchy fog before 11am. High near 50. Chance of precipitation is 90%.
Wednesday Night
 
 Showers and possibly a thunderstorm. Low around 45. Chance of precipitation is 100%.
Christmas Day
 
 Showers. Cloudy, with a high near 47.
Thursday Night
 
 Showers. Cloudy, with a low around 41.
Friday
 
 Showers. Mostly cloudy, with a high near 46.
Friday Night
 
 A chance of showers. Mostly cloudy, with a low around 34.
Saturday
 
 A slight chance of showers. Mostly sunny, with a high near 49.
Saturday Night
 
 Partly cloudy, with a low around 34.
Sunday
 
 Partly sunny, with a high near 50.

 

Forecast from NOAA-NWS for Penn Valley CA.