National Weather Service Forecast for: San Anselmo 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 low around 48. Calm wind.
Mostly Clear

 Monday

Monday: Mostly cloudy, with a high near 66. Calm wind.
Mostly Cloudy

 Monday
Night
Monday Night: A 40 percent chance of showers after 3am. Mostly cloudy, with a low around 51. 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 64. South southeast wind 3 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. Patchy fog after 5am. Otherwise, partly cloudy, with a low around 48. Calm wind.
Chance
Showers then
Patchy Fog
 Wednesday

Wednesday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 68.
Patchy Fog
then Mostly
Sunny
 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 49.
Partly Cloudy

 Thursday

Thursday: Sunny, with a high near 72.
Sunny

 Thursday
Night
Thursday Night: Mostly clear, with a low around 48.
Mostly Clear
Lo 48 °F Hi 66 °F Lo 51 °F Hi 64 °F Lo 48 °F Hi 68 °F Lo 49 °F Hi 72 °F Lo 48 °F

 

Tonight
 
 Mostly clear, with a low around 48. Calm wind.
Monday
 
 Mostly cloudy, with a high near 66. Calm wind.
Monday Night
 
 A 40 percent chance of showers after 3am. Mostly cloudy, with a low around 51. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
 
 Showers, mainly before 4pm. High near 64. South southeast wind 3 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. Patchy fog after 5am. Otherwise, partly cloudy, with a low around 48. Calm wind.
Wednesday
 
 Patchy fog before 8am. Otherwise, mostly sunny, with a high near 68.
Wednesday Night
 
 Partly cloudy, with a low around 49.
Thursday
 
 Sunny, with a high near 72.
Thursday Night
 
 Mostly clear, with a low around 48.
Friday
 
 Sunny, with a high near 74.
Friday Night
 
 Mostly clear, with a low around 50.
Saturday
 
 Sunny, with a high near 75.
Saturday Night
 
 Partly cloudy, with a low around 50.
Sunday
 
 Mostly sunny, with a high near 74.

 

Forecast from NOAA-NWS for San Anselmo CA.