National Weather Service Forecast for: Guerneville CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 9:31 am PDT Apr 25, 2025
 
Today

Today: A 20 percent chance of showers before 2pm. Mostly cloudy, with a high near 58. West southwest wind 5 to 7 mph.
Slight Chance
Showers
 Tonight

Tonight: A 20 percent chance of rain before 11pm. Areas of fog after 2am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 44. West wind around 5 mph becoming calm in the evening.
Slight Chance
Rain then
Areas Fog
 Saturday

Saturday: A 30 percent chance of rain, mainly after 2pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 60. Calm wind becoming west southwest around 6 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Chance Rain
and Patchy
Fog
 Saturday
Night
Saturday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 46. West wind around 6 mph becoming calm in the evening.
Chance Rain

 Sunday

Sunday: Partly sunny, with a high near 64. Calm wind becoming west around 5 mph in the afternoon.
Partly Sunny

 Sunday
Night
Sunday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 45.
Mostly Clear
then Patchy
Fog
 Monday

Monday: Sunny, with a high near 72.
Sunny

 Monday
Night
Monday Night: Mostly clear, with a low around 49.
Mostly Clear

 Tuesday

Tuesday: Mostly sunny, with a high near 75.
Mostly Sunny
Hi 58 °F Lo 44 °F Hi 60 °F Lo 46 °F Hi 64 °F Lo 45 °F Hi 72 °F Lo 49 °F Hi 75 °F

 

Today
 
 A 20 percent chance of showers before 2pm. Mostly cloudy, with a high near 58. West southwest wind 5 to 7 mph.
Tonight
 
 A 20 percent chance of rain before 11pm. Areas of fog after 2am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 44. West wind around 5 mph becoming calm in the evening.
Saturday
 
 A 30 percent chance of rain, mainly after 2pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 60. Calm wind becoming west southwest around 6 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
 
 A 40 percent chance of rain. Mostly cloudy, with a low around 46. West wind around 6 mph becoming calm in the evening.
Sunday
 
 Partly sunny, with a high near 64. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
 
 Patchy fog after 4am. Otherwise, mostly clear, with a low around 45.
Monday
 
 Sunny, with a high near 72.
Monday Night
 
 Mostly clear, with a low around 49.
Tuesday
 
 Mostly sunny, with a high near 75.
Tuesday Night
 
 Mostly clear, with a low around 53.
Wednesday
 
 Sunny, with a high near 77.
Wednesday Night
 
 Mostly clear, with a low around 51.
Thursday
 
 Sunny, with a high near 74.

 

Forecast from NOAA-NWS for Guerneville CA.