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

Overnight: Rain likely. Areas of fog. Otherwise, cloudy, with a steady temperature around 53. Calm wind becoming south southeast 5 to 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Rain Likely
and Areas Fog

 Tuesday

Tuesday: Rain likely, mainly after 4pm. Patchy fog before 9am. Otherwise, cloudy, with a high near 56. South southeast wind 8 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain Likely
and Patchy
Fog

 Tuesday
Night
Tuesday Night: Rain and possibly a thunderstorm. Low around 50. Breezy, with a southeast wind 16 to 23 mph, with gusts as high as 47 mph. Chance of precipitation is 80%. New rainfall 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. Patchy dense fog before 10am. High near 54. Light south southeast wind becoming southeast 5 to 10 mph in the morning. 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 and
Patchy Dense
Fog then
Severe
T-Storms
 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm before 10pm, then rain between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Some of the storms could be severe. Low around 49. South southeast wind 14 to 16 mph, with gusts as high as 34 mph. 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 51. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Showers


 Thursday
Night
Thursday Night: Showers and possibly a thunderstorm before 4am, then rain after 4am. Low around 45. Chance of precipitation is 100%.
Showers


 Friday

Friday: Rain before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then rain likely and possibly a thunderstorm after 4pm. Patchy fog before 1pm, then patchy fog after 4pm. Otherwise, cloudy, with a high near 51.
Showers and
Patchy Fog

 Friday
Night
Friday Night: Rain likely, mainly before 10pm. Patchy fog. Otherwise, mostly cloudy, with a low around 41.
Rain Likely
and Patchy
Fog
Lo 53 °F Hi 56 °F Lo 50 °F Hi 54 °F Lo 49 °F Hi 51 °F Lo 45 °F Hi 51 °F Lo 41 °F

Flood Watch
Wind Advisory
 

Overnight
 
 Rain likely. Areas of fog. Otherwise, cloudy, with a steady temperature around 53. Calm wind becoming south southeast 5 to 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
 
 Rain likely, mainly after 4pm. Patchy fog before 9am. Otherwise, cloudy, with a high near 56. South southeast wind 8 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
 
 Rain and possibly a thunderstorm. Low around 50. Breezy, with a southeast wind 16 to 23 mph, with gusts as high as 47 mph. Chance of precipitation is 80%. New rainfall 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. Patchy dense fog before 10am. High near 54. Light south southeast wind becoming southeast 5 to 10 mph in the morning. 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 before 10pm, then rain between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Some of the storms could be severe. Low around 49. South southeast wind 14 to 16 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Christmas Day
 
 Showers and possibly a thunderstorm. High near 51. 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 4am, then rain after 4am. Low around 45. Chance of precipitation is 100%.
Friday
 
 Rain before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then rain likely and possibly a thunderstorm after 4pm. Patchy fog before 1pm, then patchy fog after 4pm. Otherwise, cloudy, with a high near 51.
Friday Night
 
 Rain likely, mainly before 10pm. Patchy fog. Otherwise, mostly cloudy, with a low around 41.
Saturday
 
 Areas of fog before noon. Otherwise, mostly sunny, with a high near 54.
Saturday Night
 
 Patchy fog. Otherwise, mostly clear, with a low around 37.
Sunday
 
 Sunny, with a high near 54.
Sunday Night
 
 Patchy fog. Otherwise, mostly clear, with a low around 37.
Monday
 
 Patchy fog. Otherwise, mostly sunny, with a high near 54.

 

Forecast from NOAA-NWS for Cotati CA.