National Weather Service Forecast for: 4 Miles SE Saint Helena CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 8:46 pm PDT Sep 12, 2026
 
Tonight

Tonight: Mostly clear, with a low around 51. North northwest wind 6 to 11 mph becoming light north after midnight. Winds could gust as high as 28 mph.
Mostly Clear
 Sunday

Sunday: Sunny, with a high near 82. West northwest wind 3 to 5 mph.
Sunny
 Sunday
Night
Sunday Night: Patchy smoke between 8pm and 2am. Mostly clear, with a low around 53. West northwest wind around 6 mph becoming calm in the evening.
Patchy Smoke
 Monday

Monday: Sunny, with a high near 89. Calm wind becoming northwest around 5 mph.
Sunny
 Monday
Night
Monday Night: Mostly clear, with a low around 52. Light and variable wind.
Mostly Clear
 Tuesday

Tuesday: Sunny, with a high near 88.
Sunny
 Tuesday
Night
Tuesday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 52.
Clear then
Patchy Fog
 Wednesday

Wednesday: Patchy fog before 8am. Otherwise, sunny, with a high near 86.
Patchy Fog
then Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 52.
Mostly Clear
Lo 51 °F Hi 82 °F Lo 53 °F Hi 89 °F Lo 52 °F Hi 88 °F Lo 52 °F Hi 86 °F Lo 52 °F

 

Tonight
 
 Mostly clear, with a low around 51. North northwest wind 6 to 11 mph becoming light north after midnight. Winds could gust as high as 28 mph.
Sunday
 
 Sunny, with a high near 82. West northwest wind 3 to 5 mph.
Sunday Night
 
 Patchy smoke between 8pm and 2am. Mostly clear, with a low around 53. West northwest wind around 6 mph becoming calm in the evening.
Monday
 
 Sunny, with a high near 89. Calm wind becoming northwest around 5 mph.
Monday Night
 
 Mostly clear, with a low around 52. Light and variable wind.
Tuesday
 
 Sunny, with a high near 88.
Tuesday Night
 
 Patchy fog after 4am. Otherwise, mostly clear, with a low around 52.
Wednesday
 
 Patchy fog before 8am. Otherwise, sunny, with a high near 86.
Wednesday Night
 
 Mostly clear, with a low around 52.
Thursday
 
 Sunny, with a high near 88.
Thursday Night
 
 Patchy fog. Otherwise, mostly clear, with a low around 52.
Friday
 
 Patchy fog. Otherwise, mostly sunny, with a high near 87.
Friday Night
 
 Patchy fog. Otherwise, mostly clear, with a low around 51.
Saturday
 
 Patchy fog. Otherwise, mostly sunny, with a high near 85.

 

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