National Weather Service Forecast for: Larkspur CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 1:24 pm PST Dec 17, 2025
 
Tonight

Tonight: Patchy dense fog before 7pm, then patchy dense fog after 8pm. Otherwise, increasing clouds, with a low around 45. Calm wind.
Patchy Dense
Fog
 Thursday

Thursday: A 30 percent chance of rain after 4pm. Widespread dense fog, mainly before 10am. Otherwise, mostly cloudy, with a high near 57. Calm wind.
Dense Fog
then Chance
Rain
 Thursday
Night
Thursday Night: Rain likely, mainly between 10pm and 4am. Patchy fog after 10pm. Otherwise, cloudy, with a low around 50. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Rain Likely
and Patchy
Fog
 Friday

Friday: Rain, mainly after 10am. High near 58. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain

 Friday
Night
Friday Night: Rain, mainly before 4am. Low around 51. Southwest wind 5 to 8 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain then
Rain Likely
 Saturday

Saturday: Rain, mainly after 10am. High near 56. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Rain

 Saturday
Night
Saturday Night: Rain before 10pm, then showers and possibly a thunderstorm after 10pm. Low around 52. Chance of precipitation is 90%.
Showers

 Sunday

Sunday: Showers and possibly a thunderstorm. Cloudy, with a high near 58.
Showers

 Sunday
Night
Sunday Night: Rain. Cloudy, with a low around 51.
Rain
Lo 45 °F Hi 57 °F Lo 50 °F Hi 58 °F Lo 51 °F Hi 56 °F Lo 52 °F Hi 58 °F Lo 51 °F

 

Tonight
 
 Patchy dense fog before 7pm, then patchy dense fog after 8pm. Otherwise, increasing clouds, with a low around 45. Calm wind.
Thursday
 
 A 30 percent chance of rain after 4pm. Widespread dense fog, mainly before 10am. Otherwise, mostly cloudy, with a high near 57. Calm wind.
Thursday Night
 
 Rain likely, mainly between 10pm and 4am. Patchy fog after 10pm. Otherwise, cloudy, with a low around 50. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
 
 Rain, mainly after 10am. High near 58. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
 
 Rain, mainly before 4am. Low around 51. Southwest wind 5 to 8 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
 
 Rain, mainly after 10am. High near 56. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
 
 Rain before 10pm, then showers and possibly a thunderstorm after 10pm. Low around 52. Chance of precipitation is 90%.
Sunday
 
 Showers and possibly a thunderstorm. Cloudy, with a high near 58.
Sunday Night
 
 Rain. Cloudy, with a low around 51.
Monday
 
 Rain likely. Cloudy, with a high near 56.
Monday Night
 
 Rain likely. Cloudy, with a low around 47.
Tuesday
 
 Rain. Cloudy, with a high near 53.
Tuesday Night
 
 Rain. Cloudy, with a low around 49.
Wednesday
 
 Rain likely. Cloudy, with a high near 55.

 

Forecast from NOAA-NWS for Larkspur CA.