National Weather Service Forecast for: Jamestown CA
Issued by: National Weather Service Sacramento, CA
Updated: 2:00 am PDT Sep 13, 2026
 
Overnight

Overnight: Clear, with a low around 55. Calm wind.
Clear
 Sunday

Sunday: Widespread haze between 11am and noon. Sunny, with a high near 77. Calm wind becoming west 5 to 7 mph in the afternoon.
Haze then
Sunny
 Sunday
Night
Sunday Night: Clear, with a low around 57. Northwest wind around 6 mph becoming calm after midnight.
Clear
 Monday

Monday: Sunny, with a high near 82. Calm wind becoming west around 6 mph in the afternoon.
Sunny
 Monday
Night
Monday Night: Clear, with a low around 60. West northwest wind around 6 mph becoming light and variable.
Clear
 Tuesday

Tuesday: Sunny, with a high near 85.
Sunny
 Tuesday
Night
Tuesday Night: Clear, with a low around 61.
Clear
 Wednesday

Wednesday: Sunny, with a high near 85.
Sunny
 Wednesday
Night
Wednesday Night: Clear, with a low around 62.
Clear
Lo 55 °F Hi 77 °F Lo 57 °F Hi 82 °F Lo 60 °F Hi 85 °F Lo 61 °F Hi 85 °F Lo 62 °F

 

Overnight
 
 Clear, with a low around 55. Calm wind.
Sunday
 
 Widespread haze between 11am and noon. Sunny, with a high near 77. Calm wind becoming west 5 to 7 mph in the afternoon.
Sunday Night
 
 Clear, with a low around 57. Northwest wind around 6 mph becoming calm after midnight.
Monday
 
 Sunny, with a high near 82. Calm wind becoming west around 6 mph in the afternoon.
Monday Night
 
 Clear, with a low around 60. West northwest wind around 6 mph becoming light and variable.
Tuesday
 
 Sunny, with a high near 85.
Tuesday Night
 
 Clear, with a low around 61.
Wednesday
 
 Sunny, with a high near 85.
Wednesday Night
 
 Clear, with a low around 62.
Thursday
 
 Sunny, with a high near 87.
Thursday Night
 
 Clear, with a low around 63.
Friday
 
 Sunny, with a high near 89.
Friday Night
 
 Clear, with a low around 63.
Saturday
 
 Sunny, with a high near 87.

 

Forecast from NOAA-NWS for Jamestown CA.