National Weather Service Forecast for: Saint Helena CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 1:26 am PDT Jun 2, 2025
 
Today

Today: Sunny, with a high near 86. Calm wind becoming west around 6 mph in the afternoon.
Sunny
 Tonight

Tonight: Patchy fog after 4am. Otherwise, mostly clear, with a low around 50. West wind around 6 mph becoming calm in the evening.
Clear then
Patchy Fog
 Tuesday

Tuesday: Sunny, with a high near 85. Calm wind becoming west southwest around 6 mph in the afternoon.
Sunny
 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 52. West southwest wind around 6 mph becoming calm in the evening.
Mostly Clear
 Wednesday

Wednesday: Sunny, with a high near 87. Calm wind becoming west southwest around 5 mph in the afternoon.
Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 51.
Mostly Clear
 Thursday

Thursday: Sunny, with a high near 84.
Sunny
 Thursday
Night
Thursday Night: Mostly clear, with a low around 52.
Mostly Clear
 Friday

Friday: Sunny, with a high near 86.
Sunny
Hi 86 °F Lo 50 °F Hi 85 °F Lo 52 °F Hi 87 °F Lo 51 °F Hi 84 °F Lo 52 °F Hi 86 °F

 

Today
 
 Sunny, with a high near 86. Calm wind becoming west around 6 mph in the afternoon.
Tonight
 
 Patchy fog after 4am. Otherwise, mostly clear, with a low around 50. West wind around 6 mph becoming calm in the evening.
Tuesday
 
 Sunny, with a high near 85. Calm wind becoming west southwest around 6 mph in the afternoon.
Tuesday Night
 
 Mostly clear, with a low around 52. West southwest wind around 6 mph becoming calm in the evening.
Wednesday
 
 Sunny, with a high near 87. Calm wind becoming west southwest around 5 mph in the afternoon.
Wednesday Night
 
 Mostly clear, with a low around 51.
Thursday
 
 Sunny, with a high near 84.
Thursday Night
 
 Mostly clear, with a low around 52.
Friday
 
 Sunny, with a high near 86.
Friday Night
 
 Mostly clear, with a low around 52.
Saturday
 
 Sunny, with a high near 88.
Saturday Night
 
 Mostly clear, with a low around 53.
Sunday
 
 Sunny, with a high near 87.

 

Forecast from NOAA-NWS for Saint Helena CA.