National Weather Service Forecast for: Fairfield CA
Issued by: National Weather Service Sacramento, CA
Updated: 2:00 am PDT Sep 13, 2026
 
Overnight

Overnight: Clear, with a steady temperature around 58. West southwest wind around 9 mph, with gusts as high as 18 mph.
Clear
 Sunday

Sunday: Widespread haze between 8am and noon. Sunny, with a high near 81. West wind 6 to 10 mph becoming north northwest in the morning.
Haze then
Sunny
 Sunday
Night
Sunday Night: Patchy smoke between 11pm and 3am. Clear, with a low around 58. West southwest wind 3 to 7 mph.
Patchy Smoke
 Monday

Monday: Sunny, with a high near 88. West southwest wind 5 to 9 mph.
Sunny
 Monday
Night
Monday Night: Clear, with a low around 58. West southwest wind 5 to 10 mph.
Clear
 Tuesday

Tuesday: Sunny, with a high near 86.
Sunny
 Tuesday
Night
Tuesday Night: Clear, with a low around 58.
Clear
 Wednesday

Wednesday: Sunny, with a high near 83.
Sunny
 Wednesday
Night
Wednesday Night: Clear, with a low around 58.
Clear
Lo 58 °F Hi 81 °F Lo 58 °F Hi 88 °F Lo 58 °F Hi 86 °F Lo 58 °F Hi 83 °F Lo 58 °F

 

Overnight
 
 Clear, with a steady temperature around 58. West southwest wind around 9 mph, with gusts as high as 18 mph.
Sunday
 
 Widespread haze between 8am and noon. Sunny, with a high near 81. West wind 6 to 10 mph becoming north northwest in the morning.
Sunday Night
 
 Patchy smoke between 11pm and 3am. Clear, with a low around 58. West southwest wind 3 to 7 mph.
Monday
 
 Sunny, with a high near 88. West southwest wind 5 to 9 mph.
Monday Night
 
 Clear, with a low around 58. West southwest wind 5 to 10 mph.
Tuesday
 
 Sunny, with a high near 86.
Tuesday Night
 
 Clear, with a low around 58.
Wednesday
 
 Sunny, with a high near 83.
Wednesday Night
 
 Clear, with a low around 58.
Thursday
 
 Sunny, with a high near 85.
Thursday Night
 
 Clear, with a low around 58.
Friday
 
 Sunny, with a high near 86.
Friday Night
 
 Mostly clear, with a low around 57.
Saturday
 
 Sunny, with a high near 83.

 

Forecast from NOAA-NWS for Fairfield CA.