National Weather Service Forecast for: 3 Miles N Saint Helena 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 98. Light west southwest wind.
Hot
 Tonight

Tonight: Mostly clear, with a low around 60. Calm wind.
Mostly Clear
 Wednesday

Wednesday: Sunny and hot, with a high near 96. Calm wind.
Hot
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 58. Calm wind.
Mostly Clear
 Thursday

Thursday: Sunny and hot, with a high near 97. Calm wind.
Hot
 Thursday
Night
Thursday Night: Mostly clear, with a low around 58.
Mostly Clear
 Friday

Friday: Sunny, with a high near 90.
Sunny
 Friday
Night
Friday Night: Mostly clear, with a low around 54.
Mostly Clear
 Saturday

Saturday: Sunny, with a high near 78.
Sunny
Hi 98 °F Lo 60 °F Hi 96 °F Lo 58 °F Hi 97 °F Lo 58 °F Hi 90 °F Lo 54 °F Hi 78 °F

Heat Advisory
Coastal Flood Advisory
 

Today
 
 Sunny and hot, with a high near 98. Light west southwest wind.
Tonight
 
 Mostly clear, with a low around 60. Calm wind.
Wednesday
 
 Sunny and hot, with a high near 96. Calm wind.
Wednesday Night
 
 Mostly clear, with a low around 58. Calm wind.
Thursday
 
 Sunny and hot, with a high near 97. Calm wind.
Thursday Night
 
 Mostly clear, with a low around 58.
Friday
 
 Sunny, with a high near 90.
Friday Night
 
 Mostly clear, with a low around 54.
Saturday
 
 Sunny, with a high near 78.
Saturday Night
 
 Mostly clear, with a low around 50.
Sunday
 
 Sunny, with a high near 74.
Sunday Night
 
 Mostly clear, with a low around 50.
Columbus Day
 
 Sunny, with a high near 76.

 

Forecast from NOAA-NWS for 3 Miles N Saint Helena CA.