National Weather Service Forecast for: 4 Miles SE Saint Helena CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 12:26 am PST Feb 2, 2026
 
Overnight

Overnight: Clear, with a steady temperature around 45. Calm wind.
Clear
 Monday

Monday: Sunny, with a high near 70. Calm wind.
Sunny
 Monday
Night
Monday Night: Partly cloudy, with a low around 43. Calm wind.
Partly Cloudy
 Tuesday

Tuesday: Sunny, with a high near 70. Calm wind.
Sunny
 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 43. Calm wind.
Mostly Clear
 Wednesday

Wednesday: Sunny, with a high near 71.
Sunny
 Wednesday
Night
Wednesday Night: Clear, with a low around 44.
Clear
 Thursday

Thursday: Sunny, with a high near 69.
Sunny
 Thursday
Night
Thursday Night: Partly cloudy, with a low around 46.
Partly Cloudy
Lo 45 °F Hi 70 °F Lo 43 °F Hi 70 °F Lo 43 °F Hi 71 °F Lo 44 °F Hi 69 °F Lo 46 °F

Coastal Flood Advisory
 

Overnight
 
 Clear, with a steady temperature around 45. Calm wind.
Monday
 
 Sunny, with a high near 70. Calm wind.
Monday Night
 
 Partly cloudy, with a low around 43. Calm wind.
Tuesday
 
 Sunny, with a high near 70. Calm wind.
Tuesday Night
 
 Mostly clear, with a low around 43. Calm wind.
Wednesday
 
 Sunny, with a high near 71.
Wednesday Night
 
 Clear, with a low around 44.
Thursday
 
 Sunny, with a high near 69.
Thursday Night
 
 Partly cloudy, with a low around 46.
Friday
 
 Mostly sunny, with a high near 68.
Friday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 45.
Saturday
 
 Patchy fog. Otherwise, mostly sunny, with a high near 68.
Saturday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 46.
Sunday
 
 A slight chance of rain. Mostly sunny, with a high near 67.

 

Forecast from NOAA-NWS for 4 Miles SE Saint Helena CA.