National Weather Service Forecast for: 3 Miles N Saint Helena CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 2:54 pm PST Dec 22, 2025
 
This
Afternoon
This Afternoon: Rain. High near 54. Calm wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Rain
 Tonight

Tonight: Rain. Areas of fog. Low around 50. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain and
Areas Fog
 Tuesday

Tuesday: Rain. High near 54. South southeast wind 5 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Rain
 Tuesday
Night
Tuesday Night: Rain. Low around 45. Southeast wind 11 to 16 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.
Rain
 Wednesday

Wednesday: Rain. High near 53. Southwest wind 5 to 7 mph becoming south southeast in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain
 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm. Low around 47. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Showers
 Christmas
Day
Christmas Day: Showers and possibly a thunderstorm. High near 49. Chance of precipitation is 100%.
Showers
 Thursday
Night
Thursday Night: Rain. Cloudy, with a low around 43.
Rain
 Friday

Friday: Rain. Cloudy, with a high near 48.
Rain
Hi 54 °F Lo 50 °F Hi 54 °F Lo 45 °F Hi 53 °F Lo 47 °F Hi 49 °F Lo 43 °F Hi 48 °F

Flood Watch
High Wind Watch
 

This Afternoon
 
 Rain. High near 54. Calm wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
 
 Rain. Areas of fog. Low around 50. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
 
 Rain. High near 54. South southeast wind 5 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
 
 Rain. Low around 45. Southeast wind 11 to 16 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.
Wednesday
 
 Rain. High near 53. Southwest wind 5 to 7 mph becoming south southeast in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
 
 Showers and possibly a thunderstorm. Low around 47. 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%.
Thursday Night
 
 Rain. Cloudy, with a low around 43.
Friday
 
 Rain. Cloudy, with a high near 48.
Friday Night
 
 A chance of rain. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 40.
Saturday
 
 Patchy fog. Otherwise, mostly sunny, with a high near 52.
Saturday Night
 
 Patchy frost. Otherwise, mostly clear, with a low around 37.
Sunday
 
 Areas of frost. Otherwise, sunny, with a high near 53.
Sunday Night
 
 Patchy frost. Otherwise, partly cloudy, with a low around 38.
Monday
 
 Patchy frost. Otherwise, mostly sunny, with a high near 55.

 

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