National Weather Service Forecast for: Napa CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 8:57 am PDT Oct 6, 2026
 
Today

Today: Sunny and hot, with a high near 96. Calm wind becoming south southwest 5 to 7 mph in the afternoon.
Hot
 Tonight

Tonight: Clear, with a low around 58. Calm wind.
Clear
 Wednesday

Wednesday: Sunny, with a high near 94. Calm wind becoming southwest around 6 mph in the afternoon.
Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 57. Southwest wind around 6 mph becoming calm in the evening.
Mostly Clear
 Thursday

Thursday: Sunny, with a high near 94. Calm wind becoming southwest around 5 mph in the afternoon.
Sunny
 Thursday
Night
Thursday Night: Mostly clear, with a low around 58.
Mostly Clear
 Friday

Friday: Sunny, with a high near 85.
Sunny
 Friday
Night
Friday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 54.
Clear then
Patchy Fog
 Saturday

Saturday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 74.
Patchy Fog
then Sunny
Hi 96 °F Lo 58 °F Hi 94 °F Lo 57 °F Hi 94 °F Lo 58 °F Hi 85 °F Lo 54 °F Hi 74 °F

Heat Advisory
Coastal Flood Advisory
 

Today
 
 Sunny and hot, with a high near 96. Calm wind becoming south southwest 5 to 7 mph in the afternoon.
Tonight
 
 Clear, with a low around 58. Calm wind.
Wednesday
 
 Sunny, with a high near 94. Calm wind becoming southwest around 6 mph in the afternoon.
Wednesday Night
 
 Mostly clear, with a low around 57. Southwest wind around 6 mph becoming calm in the evening.
Thursday
 
 Sunny, with a high near 94. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
 
 Mostly clear, with a low around 58.
Friday
 
 Sunny, with a high near 85.
Friday Night
 
 Patchy fog after 5am. Otherwise, mostly clear, with a low around 54.
Saturday
 
 Patchy fog before 8am. Otherwise, mostly sunny, with a high near 74.
Saturday Night
 
 Mostly clear, with a low around 51.
Sunday
 
 Sunny, with a high near 72.
Sunday Night
 
 Mostly clear, with a low around 51.
Columbus Day
 
 Sunny, with a high near 75.

 

Forecast from NOAA-NWS for Napa CA.