National Weather Service Forecast for: Fairfax CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 3:06 pm PST Nov 1, 2026
 
Tonight

Tonight: Mostly clear, with a steady temperature around 49. Light west wind.
Mostly Clear

 Monday

Monday: Mostly cloudy, with a high near 64. Calm wind.
Mostly Cloudy

 Monday
Night
Monday Night: A 40 percent chance of showers after 3am. Mostly cloudy, with a low around 50. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Mostly Cloudy
then Chance
Showers
 Tuesday

Tuesday: Showers, mainly before 4pm. High near 62. South wind 5 to 7 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Showers

 Tuesday
Night
Tuesday Night: A 40 percent chance of showers before 10pm. Partly cloudy, with a low around 48. Light east northeast wind.
Chance
Showers then
Partly Cloudy
 Wednesday

Wednesday: Mostly sunny, with a high near 66.
Mostly Sunny

 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 49.
Partly Cloudy

 Thursday

Thursday: Sunny, with a high near 70.
Sunny

 Thursday
Night
Thursday Night: Mostly clear, with a low around 48.
Mostly Clear
Lo 49 °F Hi 64 °F Lo 50 °F Hi 62 °F Lo 48 °F Hi 66 °F Lo 49 °F Hi 70 °F Lo 48 °F

 

Tonight
 
 Mostly clear, with a steady temperature around 49. Light west wind.
Monday
 
 Mostly cloudy, with a high near 64. Calm wind.
Monday Night
 
 A 40 percent chance of showers after 3am. Mostly cloudy, with a low around 50. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
 
 Showers, mainly before 4pm. High near 62. South wind 5 to 7 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
 
 A 40 percent chance of showers before 10pm. Partly cloudy, with a low around 48. Light east northeast wind.
Wednesday
 
 Mostly sunny, with a high near 66.
Wednesday Night
 
 Partly cloudy, with a low around 49.
Thursday
 
 Sunny, with a high near 70.
Thursday Night
 
 Mostly clear, with a low around 48.
Friday
 
 Sunny, with a high near 72.
Friday Night
 
 Mostly clear, with a low around 50.
Saturday
 
 Sunny, with a high near 73.
Saturday Night
 
 Partly cloudy, with a low around 50.
Sunday
 
 Mostly sunny, with a high near 72.

 

Forecast from NOAA-NWS for Fairfax CA.