National Weather Service Forecast for: Fairfield CA
Issued by: National Weather Service Sacramento, CA
Updated: 1:01 pm PST Nov 1, 2026
 
Tonight

Tonight: Mostly clear, with a low around 47. Calm wind.
Mostly Clear

 Monday

Monday: Increasing clouds, with a high near 66. Calm wind becoming south around 5 mph.
Increasing
Clouds
 Monday
Night
Monday Night: Showers likely, mainly after 4am. Mostly 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.
Mostly Cloudy
then Showers
Likely
 Tuesday

Tuesday: Showers, mainly before 4pm. High near 61. Calm wind becoming east 5 to 7 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Showers

 Tuesday
Night
Tuesday Night: A 30 percent chance of showers before 10pm. Partly cloudy, with a low around 49. Calm wind becoming north around 5 mph after midnight.
Chance
Showers then
Partly Cloudy
 Wednesday

Wednesday: Sunny, with a high near 68.
Sunny

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 50.
Mostly Clear

 Thursday

Thursday: Sunny, with a high near 71.
Sunny

 Thursday
Night
Thursday Night: Mostly clear, with a low around 50.
Mostly Clear
Lo 47 °F Hi 66 °F Lo 50 °F Hi 61 °F Lo 49 °F Hi 68 °F Lo 50 °F Hi 71 °F Lo 50 °F

 

Tonight
 
 Mostly clear, with a low around 47. Calm wind.
Monday
 
 Increasing clouds, with a high near 66. Calm wind becoming south around 5 mph.
Monday Night
 
 Showers likely, mainly after 4am. Mostly 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.
Tuesday
 
 Showers, mainly before 4pm. High near 61. Calm wind becoming east 5 to 7 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
 
 A 30 percent chance of showers before 10pm. Partly cloudy, with a low around 49. Calm wind becoming north around 5 mph after midnight.
Wednesday
 
 Sunny, with a high near 68.
Wednesday Night
 
 Mostly clear, with a low around 50.
Thursday
 
 Sunny, with a high near 71.
Thursday Night
 
 Mostly clear, with a low around 50.
Friday
 
 Sunny, with a high near 72.
Friday Night
 
 Mostly clear, with a low around 50.
Saturday
 
 Sunny, with a high near 73.
Saturday Night
 
 Mostly clear, with a low around 51.
Sunday
 
 Mostly sunny, with a high near 72.

 

Forecast from NOAA-NWS for Fairfield CA.