National Weather Service Forecast for: Fairfield CA
Issued by: National Weather Service Sacramento, CA
Updated: 1:36 pm PST Dec 22, 2025
 
Tonight

Tonight: A 40 percent chance of rain, mainly before 1am. Patchy dense fog after midnight. Otherwise, cloudy, with a low around 54. Calm wind.
Chance Rain
and Patchy
Dense Fog
 Tuesday

Tuesday: A 40 percent chance of rain after 2pm. Areas of dense fog before 11am. Otherwise, cloudy, with a high near 58. Southeast wind 7 to 11 mph, with gusts as high as 22 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Chance Rain
and Areas
Dense Fog
 Tuesday
Night
Tuesday Night: Rain, mainly before 4am. Low around 51. South southeast wind 15 to 21 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Rain

 Wednesday

Wednesday: Rain, mainly between 10am and 4pm, then showers and possibly a thunderstorm after 4pm. High near 55. South southwest wind 11 to 14 mph becoming southeast in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Showers

 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm before 7pm, then rain between 7pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 52. South southeast wind 11 to 18 mph, with gusts as high as 38 mph. Chance of precipitation is 100%.
Showers

 Christmas
Day
Christmas Day: Showers and possibly a thunderstorm before 1pm, then rain between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 54. Breezy. Chance of precipitation is 100%.
Showers and
Breezy
 Thursday
Night
Thursday Night: Showers and possibly a thunderstorm before 10pm, then rain after 10pm. Low around 47. Chance of precipitation is 100%.
Showers

 Friday

Friday: Rain, mainly before 4pm. Mostly cloudy, with a high near 50.
Rain

 Friday
Night
Friday Night: A chance of rain, mainly before 10pm. Partly cloudy, with a low around 42.
Chance Rain
Lo 54 °F Hi 58 °F Lo 51 °F Hi 55 °F Lo 52 °F Hi 54 °F Lo 47 °F Hi 50 °F Lo 42 °F

High Wind Watch
Flood Watch
 

Tonight
 
 A 40 percent chance of rain, mainly before 1am. Patchy dense fog after midnight. Otherwise, cloudy, with a low around 54. Calm wind.
Tuesday
 
 A 40 percent chance of rain after 2pm. Areas of dense fog before 11am. Otherwise, cloudy, with a high near 58. Southeast wind 7 to 11 mph, with gusts as high as 22 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
 
 Rain, mainly before 4am. Low around 51. South southeast wind 15 to 21 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
 
 Rain, mainly between 10am and 4pm, then showers and possibly a thunderstorm after 4pm. High near 55. South southwest wind 11 to 14 mph becoming southeast in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
 
 Showers and possibly a thunderstorm before 7pm, then rain between 7pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 52. South southeast wind 11 to 18 mph, with gusts as high as 38 mph. Chance of precipitation is 100%.
Christmas Day
 
 Showers and possibly a thunderstorm before 1pm, then rain between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 54. Breezy. Chance of precipitation is 100%.
Thursday Night
 
 Showers and possibly a thunderstorm before 10pm, then rain after 10pm. Low around 47. Chance of precipitation is 100%.
Friday
 
 Rain, mainly before 4pm. Mostly cloudy, with a high near 50.
Friday Night
 
 A chance of rain, mainly before 10pm. Partly cloudy, with a low around 42.
Saturday
 
 Mostly sunny, with a high near 50.
Saturday Night
 
 Mostly clear, with a low around 37.
Sunday
 
 Sunny, with a high near 48.
Sunday Night
 
 Partly cloudy, with a low around 37.
Monday
 
 Sunny, with a high near 48.

 

Forecast from NOAA-NWS for Fairfield CA.