National Weather Service Forecast for: Fairfax CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 7:35 pm PST Dec 4, 2025
 
Tonight

Tonight: Mostly clear, with a low around 43. Light and variable wind.
Mostly Clear

Friday

Friday: Sunny, with a high near 62. Light and variable wind.
Sunny

Friday
Night
Friday Night: Partly cloudy, with a low around 46. West northwest wind around 6 mph.
Partly Cloudy

Saturday

Saturday: Patchy fog between 7am and 8am.  Otherwise, mostly sunny, with a high near 64. Calm wind becoming northwest around 6 mph in the afternoon.
Patchy Fog
then Sunny
Saturday
Night
Saturday Night: Partly cloudy, with a low around 47. West northwest wind 5 to 8 mph.
Partly Cloudy

Sunday

Sunday: Partly sunny, with a high near 64.
Partly Sunny

Sunday
Night
Sunday Night: Patchy fog after 5am.  Otherwise, partly cloudy, with a low around 46.
Partly Cloudy
then Patchy
Fog
Monday

Monday: Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 64.
Patchy Fog
then Mostly
Sunny
Monday
Night
Monday Night: Partly cloudy, with a low around 47.
Partly Cloudy

Lo 43 °F Hi 62 °F Lo 46 °F Hi 64 °F Lo 47 °F Hi 64 °F Lo 46 °F Hi 64 °F Lo 47 °F

Coastal Flood Advisory
 

Tonight
 
Mostly clear, with a low around 43. Light and variable wind.
Friday
 
Sunny, with a high near 62. Light and variable wind.
Friday Night
 
Partly cloudy, with a low around 46. West northwest wind around 6 mph.
Saturday
 
Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 64. Calm wind becoming northwest around 6 mph in the afternoon.
Saturday Night
 
Partly cloudy, with a low around 47. West northwest wind 5 to 8 mph.
Sunday
 
Partly sunny, with a high near 64.
Sunday Night
 
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 46.
Monday
 
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 64.
Monday Night
 
Partly cloudy, with a low around 47.
Tuesday
 
Mostly sunny, with a high near 64.
Tuesday Night
 
Partly cloudy, with a low around 48.
Wednesday
 
Mostly sunny, with a high near 65.
Wednesday Night
 
Patchy fog. Otherwise, partly cloudy, with a low around 48.
Thursday
 
Patchy fog. Otherwise, mostly sunny, with a high near 65.

 

Forecast from NOAA-NWS for Fairfax CA.