National Weather Service Forecast for: Jamestown CA
Issued by: National Weather Service Sacramento, CA
Updated: 1:51 pm PST Dec 17, 2025
 
Tonight

Tonight: Patchy dense fog before 4am, then widespread dense fog after 5am. Otherwise, partly cloudy, with a low around 41. Calm wind.
Dense Fog

 Thursday

Thursday: Widespread dense fog, mainly before 7am. Otherwise, mostly sunny, with a high near 57. Calm wind.
Dense Fog
then Mostly
Sunny
 Thursday
Night
Thursday Night: A 10 percent chance of showers after 4am. Mostly cloudy, with a low around 43. Calm wind.
Partly Cloudy
then Slight
Chance
Showers
 Friday

Friday: A 50 percent chance of showers, mainly after 10am. Mostly cloudy, with a high near 56. Light and variable wind. New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers

 Friday
Night
Friday Night: Showers. Low around 50. Light east wind. Chance of precipitation is 80%.
Showers

 Saturday

Saturday: Showers likely. Cloudy, with a high near 56. Chance of precipitation is 60%.
Showers
Likely

 Saturday
Night
Saturday Night: Showers. Low around 52. Chance of precipitation is 80%.
Showers

 Sunday

Sunday: Showers and possibly a thunderstorm. Cloudy, with a high near 54.
Showers

 Sunday
Night
Sunday Night: Showers. Cloudy, with a low around 50.
Showers
Lo 41 °F Hi 57 °F Lo 43 °F Hi 56 °F Lo 50 °F Hi 56 °F Lo 52 °F Hi 54 °F Lo 50 °F

 

Tonight
 
 Patchy dense fog before 4am, then widespread dense fog after 5am. Otherwise, partly cloudy, with a low around 41. Calm wind.
Thursday
 
 Widespread dense fog, mainly before 7am. Otherwise, mostly sunny, with a high near 57. Calm wind.
Thursday Night
 
 A 10 percent chance of showers after 4am. Mostly cloudy, with a low around 43. Calm wind.
Friday
 
 A 50 percent chance of showers, mainly after 10am. Mostly cloudy, with a high near 56. Light and variable wind. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
 
 Showers. Low around 50. Light east wind. Chance of precipitation is 80%.
Saturday
 
 Showers likely. Cloudy, with a high near 56. Chance of precipitation is 60%.
Saturday Night
 
 Showers. Low around 52. Chance of precipitation is 80%.
Sunday
 
 Showers and possibly a thunderstorm. Cloudy, with a high near 54.
Sunday Night
 
 Showers. Cloudy, with a low around 50.
Monday
 
 Showers likely. Cloudy, with a high near 53.
Monday Night
 
 Showers likely. Cloudy, with a low around 46.
Tuesday
 
 Showers likely. Cloudy, with a high near 52.
Tuesday Night
 
 Showers. Cloudy, with a low around 47.
Wednesday
 
 Showers. Cloudy, with a high near 50.

 

Forecast from NOAA-NWS for Jamestown CA.