National Weather Service Forecast for: 4 Miles SE Saint Helena CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 3:06 pm PST Nov 1, 2026
 
Tonight

Tonight: Patchy fog after 10pm. Otherwise, mostly clear, with a low around 42. Calm wind.
Patchy Fog


 Monday

Monday: Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 67. Calm wind.
Patchy Fog
then Mostly
Cloudy

 Monday
Night
Monday Night: A 40 percent chance of showers after 3am. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 44. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Mostly Cloudy
then Chance
Showers and
Patchy Fog
 Tuesday

Tuesday: Showers, mainly before 4pm. Areas of fog before 10am, then patchy fog after 4pm. High near 61. Calm wind becoming south southeast around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Showers and
Areas Fog

 Tuesday
Night
Tuesday Night: A 30 percent chance of showers before 10pm. Patchy fog. Otherwise, mostly cloudy, with a low around 43. Calm wind.
Chance
Showers and
Patchy Fog
then Patchy
Fog
 Wednesday

Wednesday: Mostly sunny, with a high near 69.
Mostly Sunny


 Wednesday
Night
Wednesday Night: Patchy fog before 1am, then patchy fog after 4am. Otherwise, partly cloudy, with a low around 43.
Patchy Fog


 Thursday

Thursday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 73.
Patchy Fog
then Sunny

 Thursday
Night
Thursday Night: Mostly clear, with a low around 43.
Mostly Clear
Lo 42 °F Hi 67 °F Lo 44 °F Hi 61 °F Lo 43 °F Hi 69 °F Lo 43 °F Hi 73 °F Lo 43 °F

 

Tonight
 
 Patchy fog after 10pm. Otherwise, mostly clear, with a low around 42. Calm wind.
Monday
 
 Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 67. Calm wind.
Monday Night
 
 A 40 percent chance of showers after 3am. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 44. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
 
 Showers, mainly before 4pm. Areas of fog before 10am, then patchy fog after 4pm. High near 61. Calm wind becoming south southeast around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
 
 A 30 percent chance of showers before 10pm. Patchy fog. Otherwise, mostly cloudy, with a low around 43. Calm wind.
Wednesday
 
 Mostly sunny, with a high near 69.
Wednesday Night
 
 Patchy fog before 1am, then patchy fog after 4am. Otherwise, partly cloudy, with a low around 43.
Thursday
 
 Patchy fog before 7am. Otherwise, mostly sunny, with a high near 73.
Thursday Night
 
 Mostly clear, with a low around 43.
Friday
 
 Sunny, with a high near 76.
Friday Night
 
 Mostly clear, with a low around 45.
Saturday
 
 Sunny, with a high near 76.
Saturday Night
 
 Partly cloudy, with a low around 44.
Sunday
 
 Mostly sunny, with a high near 75.

 

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