National Weather Service Forecast for: Tamalpais-homestead Valley CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 11:55 pm PST Dec 22, 2025
 
Overnight

Overnight: A 40 percent chance of rain. Areas of fog. Otherwise, cloudy, with a low around 51. South southwest wind around 5 mph becoming calm. New precipitation amounts of less than a tenth of an inch possible.
Chance Rain
and Areas Fog

 Tuesday

Tuesday: Rain likely, mainly after 4pm. Cloudy, with a high near 58. South wind 11 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Rain Likely

 Tuesday
Night
Tuesday Night: Rain. Low around 50. Breezy, with a south southeast wind 16 to 26 mph, with gusts as high as 48 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Rain and
Breezy

 Wednesday

Wednesday: Rain, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. Some of the storms could be severe. High near 57. South southeast wind 5 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Rain then
Severe
T-Storms
 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm before 7pm, then rain after 7pm. Some of the storms could be severe. Low around 50. Breezy, with a south southeast wind 22 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Breezy.
Severe
T-Storms
then Rain
 Christmas
Day
Christmas Day: Showers and possibly a thunderstorm. High near 54. Breezy. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and
Breezy

 Thursday
Night
Thursday Night: Showers and possibly a thunderstorm before 1am, then rain after 1am. Low around 47. Breezy. Chance of precipitation is 100%.
Showers and
Breezy

 Friday

Friday: Rain. Cloudy, with a high near 53.
Rain

 Friday
Night
Friday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 44.
Rain Likely
Lo 51 °F Hi 58 °F Lo 50 °F Hi 57 °F Lo 50 °F Hi 54 °F Lo 47 °F Hi 53 °F Lo 44 °F

Flood Watch
High Wind Warning
 

Overnight
 
 A 40 percent chance of rain. Areas of fog. Otherwise, cloudy, with a low around 51. South southwest wind around 5 mph becoming calm. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
 
 Rain likely, mainly after 4pm. Cloudy, with a high near 58. South wind 11 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
 
 Rain. Low around 50. Breezy, with a south southeast wind 16 to 26 mph, with gusts as high as 48 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
 
 Rain, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. Some of the storms could be severe. High near 57. South southeast wind 5 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
 
 Showers and possibly a thunderstorm before 7pm, then rain after 7pm. Some of the storms could be severe. Low around 50. Breezy, with a south southeast wind 22 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Christmas Day
 
 Showers and possibly a thunderstorm. High near 54. Breezy. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
 
 Showers and possibly a thunderstorm before 1am, then rain after 1am. Low around 47. Breezy. Chance of precipitation is 100%.
Friday
 
 Rain. Cloudy, with a high near 53.
Friday Night
 
 Rain likely, mainly before 10pm. Mostly cloudy, with a low around 44.
Saturday
 
 A slight chance of rain before 10am. Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 53.
Saturday Night
 
 Mostly clear, with a low around 41.
Sunday
 
 Sunny, with a high near 52.
Sunday Night
 
 Mostly clear, with a low around 41.
Monday
 
 Mostly sunny, with a high near 53.

 

Forecast from NOAA-NWS for Tamalpais-homestead Valley CA.