National Weather Service Forecast for: Fairfield CA
Issued by: National Weather Service Sacramento, CA
Updated: 2:01 am PDT Oct 6, 2026
 
Today

Today: Sunny and hot, with a high near 100. Southwest wind 3 to 8 mph.
Hot
 Tonight

Tonight: Clear, with a low around 62. Southwest wind 5 to 7 mph.
Clear
 Wednesday

Wednesday: Sunny and hot, with a high near 98. West southwest wind 3 to 7 mph.
Hot
 Wednesday
Night
Wednesday Night: Clear, with a low around 59. West southwest wind 6 to 8 mph.
Clear
 Thursday

Thursday: Sunny and hot, with a high near 99. West wind 3 to 5 mph.
Hot
 Thursday
Night
Thursday Night: Clear, with a low around 61.
Clear
 Friday

Friday: Sunny, with a high near 88.
Sunny
 Friday
Night
Friday Night: Clear, with a low around 58.
Clear
 Saturday

Saturday: Sunny, with a high near 77.
Sunny
Hi 100 °F Lo 62 °F Hi 98 °F Lo 59 °F Hi 99 °F Lo 61 °F Hi 88 °F Lo 58 °F Hi 77 °F

Heat Advisory
 

Today
 
 Sunny and hot, with a high near 100. Southwest wind 3 to 8 mph.
Tonight
 
 Clear, with a low around 62. Southwest wind 5 to 7 mph.
Wednesday
 
 Sunny and hot, with a high near 98. West southwest wind 3 to 7 mph.
Wednesday Night
 
 Clear, with a low around 59. West southwest wind 6 to 8 mph.
Thursday
 
 Sunny and hot, with a high near 99. West wind 3 to 5 mph.
Thursday Night
 
 Clear, with a low around 61.
Friday
 
 Sunny, with a high near 88.
Friday Night
 
 Clear, with a low around 58.
Saturday
 
 Sunny, with a high near 77.
Saturday Night
 
 Clear, with a low around 53.
Sunday
 
 Sunny, with a high near 76.
Sunday Night
 
 Clear, with a low around 53.
Columbus Day
 
 Sunny, with a high near 79.

 

Forecast from NOAA-NWS for Fairfield CA.