National Weather Service Forecast for: Napa CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 2:30 pm PST Dec 23, 2025
 
This
Afternoon
This Afternoon: Showers likely. Cloudy, with a high near 60. South wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Showers
Likely
 Tonight

Tonight: Showers, with thunderstorms also possible after 1am. Low around 51. Southeast wind 11 to 21 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers

 Wednesday

Wednesday: Showers, with thunderstorms also possible after 1pm. High near 56. Southeast wind 6 to 8 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Showers then
Chance
Showers
 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm. Low around 49. South southeast wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Showers

 Christmas
Day
Christmas Day: Showers, with thunderstorms also possible after 10am. High near 51. South wind 11 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Showers

 Thursday
Night
Thursday Night: Showers and possibly a thunderstorm. Low around 46. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Showers

 Friday

Friday: Showers, with thunderstorms also possible after 1pm. High near 51. Chance of precipitation is 90%.
Showers

 Friday
Night
Friday Night: Showers likely and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms, mainly between 10pm and 4am. Mostly cloudy, with a low around 42.
Showers
Likely
 Saturday

Saturday: A slight chance of showers before 10am. Mostly sunny, with a high near 52.
Slight Chance
Showers then
Sunny
Hi 60 °F Lo 51 °F Hi 56 °F Lo 49 °F Hi 51 °F Lo 46 °F Hi 51 °F Lo 42 °F Hi 52 °F

Flood Watch
Wind Advisory
 

This Afternoon
 
 Showers likely. Cloudy, with a high near 60. South wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
 
 Showers, with thunderstorms also possible after 1am. Low around 51. Southeast wind 11 to 21 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
 
 Showers, with thunderstorms also possible after 1pm. High near 56. Southeast wind 6 to 8 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
 
 Showers and possibly a thunderstorm. Low around 49. South southeast wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Christmas Day
 
 Showers, with thunderstorms also possible after 10am. High near 51. South wind 11 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
 
 Showers and possibly a thunderstorm. Low around 46. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday
 
 Showers, with thunderstorms also possible after 1pm. High near 51. Chance of precipitation is 90%.
Friday Night
 
 Showers likely and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms, mainly between 10pm and 4am. Mostly cloudy, with a low around 42.
Saturday
 
 A slight chance of showers before 10am. Mostly sunny, with a high near 52.
Saturday Night
 
 Patchy frost after 5am. Otherwise, mostly clear, with a low around 36.
Sunday
 
 Patchy frost. Otherwise, sunny, with a high near 52.
Sunday Night
 
 Patchy fog. Patchy frost. Otherwise, mostly clear, with a low around 35.
Monday
 
 Patchy fog. Patchy frost. Otherwise, sunny, with a high near 53.

 

Forecast from NOAA-NWS for Napa CA.