National Weather Service Forecast for: 3 Miles N Saint Helena CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 11:55 pm PST Dec 22, 2025
 
Overnight

Overnight: Rain likely. Areas of fog. Otherwise, cloudy, with a steady temperature around 53. East southeast wind 3 to 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Rain Likely
and Areas Fog
 Tuesday

Tuesday: Rain likely, mainly after 4pm. Patchy fog before 10am. Otherwise, cloudy, with a high near 54. South southeast wind 7 to 17 mph, with gusts as high as 32 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain Likely
and Patchy
Fog
 Tuesday
Night
Tuesday Night: Rain before 10pm, then showers and possibly a thunderstorm between 10pm and 4am, then rain likely and possibly a thunderstorm after 4am. Low around 48. Breezy, with a south southeast wind 11 to 16 mph increasing to 18 to 23 mph after midnight. Winds could gust as high as 48 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and
Breezy
 Wednesday

Wednesday: Rain, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. Areas of fog before 10am, then patchy fog after 1pm. High near 53. Calm wind becoming south southeast 5 to 8 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers and
Areas Fog
 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm before 10pm, then rain between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Areas of fog before 7pm. Low around 47. South southeast wind 8 to 11 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Showers and
Areas Fog
 Christmas
Day
Christmas Day: Showers and possibly a thunderstorm. High near 49. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Showers

 Thursday
Night
Thursday Night: Showers and possibly a thunderstorm. Patchy fog after 10pm. Low around 43. Chance of precipitation is 100%.
Showers and
Patchy Fog
 Friday

Friday: Rain. Areas of fog. Otherwise, cloudy, with a high near 48.
Rain and
Areas Fog
 Friday
Night
Friday Night: Rain likely, mainly before 10pm. Areas of fog. Otherwise, mostly cloudy, with a low around 41.
Rain Likely
and Areas Fog
Lo 53 °F Hi 54 °F Lo 48 °F Hi 53 °F Lo 47 °F Hi 49 °F Lo 43 °F Hi 48 °F Lo 41 °F

Flood Watch
Wind Advisory
 

Overnight
 
 Rain likely. Areas of fog. Otherwise, cloudy, with a steady temperature around 53. East southeast wind 3 to 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
 
 Rain likely, mainly after 4pm. Patchy fog before 10am. Otherwise, cloudy, with a high near 54. South southeast wind 7 to 17 mph, with gusts as high as 32 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
 
 Rain before 10pm, then showers and possibly a thunderstorm between 10pm and 4am, then rain likely and possibly a thunderstorm after 4am. Low around 48. Breezy, with a south southeast wind 11 to 16 mph increasing to 18 to 23 mph after midnight. Winds could gust as high as 48 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
 
 Rain, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. Areas of fog before 10am, then patchy fog after 1pm. High near 53. Calm wind becoming south southeast 5 to 8 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
 
 Showers and possibly a thunderstorm before 10pm, then rain between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Areas of fog before 7pm. Low around 47. South southeast wind 8 to 11 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Christmas Day
 
 Showers and possibly a thunderstorm. High near 49. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Thursday Night
 
 Showers and possibly a thunderstorm. Patchy fog after 10pm. Low around 43. Chance of precipitation is 100%.
Friday
 
 Rain. Areas of fog. Otherwise, cloudy, with a high near 48.
Friday Night
 
 Rain likely, mainly before 10pm. Areas of fog. Otherwise, mostly cloudy, with a low around 41.
Saturday
 
 Widespread fog, mainly before 10am. Otherwise, mostly sunny, with a high near 52.
Saturday Night
 
 Mostly clear, with a low around 38.
Sunday
 
 Sunny, with a high near 53.
Sunday Night
 
 Mostly clear, with a low around 37.
Monday
 
 Sunny, with a high near 54.

 

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