National Weather Service Forecast for: Vallejo CA
Issued by: National Weather Service Sacramento, CA
Updated: 1:01 pm PST Nov 1, 2026
 
Tonight

Tonight: Patchy fog between 1am and 2am. Otherwise, mostly clear, with a low around 46. Calm wind.
Clear then
Patchy Fog
 Monday

Monday: Mostly cloudy, with a high near 65. Light and variable wind.
Mostly Cloudy

 Monday
Night
Monday Night: Showers likely, mainly after 4am. Mostly cloudy, with a low around 49. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Mostly Cloudy
then Showers
Likely
 Tuesday

Tuesday: Showers, mainly before 4pm. High near 61. East southeast wind 3 to 6 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Showers

 Tuesday
Night
Tuesday Night: A 30 percent chance of showers before 10pm. Mostly cloudy, with a low around 48. Calm wind.
Chance
Showers then
Partly Cloudy
 Wednesday

Wednesday: Mostly sunny, with a high near 66.
Mostly Sunny

 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 48.
Partly Cloudy

 Thursday

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

 Thursday
Night
Thursday Night: Mostly clear, with a low around 47.
Mostly Clear
Lo 46 °F Hi 65 °F Lo 49 °F Hi 61 °F Lo 48 °F Hi 66 °F Lo 48 °F Hi 69 °F Lo 47 °F

 

Tonight
 
 Patchy fog between 1am and 2am. Otherwise, mostly clear, with a low around 46. Calm wind.
Monday
 
 Mostly cloudy, with a high near 65. Light and variable wind.
Monday Night
 
 Showers likely, mainly after 4am. Mostly cloudy, with a low around 49. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
 
 Showers, mainly before 4pm. High near 61. East southeast wind 3 to 6 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. Mostly cloudy, with a low around 48. Calm wind.
Wednesday
 
 Mostly sunny, with a high near 66.
Wednesday Night
 
 Partly cloudy, with a low around 48.
Thursday
 
 Mostly sunny, with a high near 69.
Thursday Night
 
 Mostly clear, with a low around 47.
Friday
 
 Mostly sunny, with a high near 70.
Friday Night
 
 Mostly clear, with a low around 49.
Saturday
 
 Sunny, with a high near 71.
Saturday Night
 
 Partly cloudy, with a low around 49.
Sunday
 
 Mostly sunny, with a high near 71.

 

Forecast from NOAA-NWS for Vallejo CA.