National Weather Service Forecast for: Petaluma CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 2:54 pm PST Dec 22, 2025
 
This
Afternoon
This Afternoon: Rain. High near 56. West wind 3 to 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Rain
 Tonight

Tonight: Rain. Patchy fog before midnight. Steady temperature around 53. Calm wind becoming east southeast around 5 mph after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain and
Patchy Fog
 Tuesday

Tuesday: Rain. High near 56. South southeast wind 8 to 17 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Rain
 Tuesday
Night
Tuesday Night: Rain and possibly a thunderstorm. Low around 48. Breezy, with a south southeast wind 20 to 23 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Rain and
Breezy
 Wednesday

Wednesday: Rain, with thunderstorms also possible after 4pm. High near 56. Southwest wind 7 to 9 mph becoming southeast in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Rain
 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 49. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Severe
T-Storms
 Christmas
Day
Christmas Day: Showers and possibly a thunderstorm. High near 52. Chance of precipitation is 100%.
Showers
 Thursday
Night
Thursday Night: Rain. Cloudy, with a low around 45.
Rain
 Friday

Friday: Rain before 10am, then showers and possibly a thunderstorm after 10am. Mostly cloudy, with a high near 52.
Showers
Hi 56 °F Lo 53 °F Hi 56 °F Lo 48 °F Hi 56 °F Lo 49 °F Hi 52 °F Lo 45 °F Hi 52 °F

Flood Watch
High Wind Watch
 

This Afternoon
 
 Rain. High near 56. West wind 3 to 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
 
 Rain. Patchy fog before midnight. Steady temperature around 53. Calm wind becoming east southeast around 5 mph after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
 
 Rain. High near 56. South southeast wind 8 to 17 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
 
 Rain and possibly a thunderstorm. Low around 48. Breezy, with a south southeast wind 20 to 23 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
 
 Rain, with thunderstorms also possible after 4pm. High near 56. Southwest wind 7 to 9 mph becoming southeast in the afternoon. Winds could gust as high as 21 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. Some of the storms could be severe. Low around 49. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Christmas Day
 
 Showers and possibly a thunderstorm. High near 52. Chance of precipitation is 100%.
Thursday Night
 
 Rain. Cloudy, with a low around 45.
Friday
 
 Rain before 10am, then showers and possibly a thunderstorm after 10am. Mostly cloudy, with a high near 52.
Friday Night
 
 A chance of rain. Mostly cloudy, with a low around 41.
Saturday
 
 Mostly sunny, with a high near 54.
Saturday Night
 
 Patchy fog. Patchy frost. Otherwise, mostly clear, with a low around 38.
Sunday
 
 Patchy frost. Otherwise, sunny, with a high near 54.
Sunday Night
 
 Patchy fog. Patchy frost. Otherwise, partly cloudy, with a low around 38.
Monday
 
 Patchy frost. Otherwise, mostly sunny, with a high near 54.

 

Forecast from NOAA-NWS for Petaluma CA.