National Weather Service Forecast for: Jamestown CA
Issued by: National Weather Service Sacramento, CA
Updated: 2:00 pm PDT May 26, 2026
 
This
Afternoon
This Afternoon: A 30 percent chance of rain, mainly after 5pm. Mostly sunny, with a high near 64. West wind around 6 mph.
Chance Rain
 Tonight

Tonight: A slight chance of rain before 10pm, then a chance of rain after 4am. Increasing clouds, with a low around 47. West northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Chance Rain
 Wednesday

Wednesday: A chance of rain and thunderstorms before 4pm, then a slight chance of showers and thunderstorms between 4pm and 5pm, then a slight chance of rain and thunderstorms after 5pm. Partly sunny, with a high near 64. Calm wind becoming south southwest around 5 mph. Chance of precipitation is 40%.
Chance
Showers
 Wednesday
Night
Wednesday Night: A slight chance of rain before 2am, then a slight chance of rain after 4am. Increasing clouds, with a low around 49. Light and variable wind. Chance of precipitation is 20%.
Slight Chance
Rain
 Thursday

Thursday: Rain likely, mainly between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 65. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%.
Showers
Likely
 Thursday
Night
Thursday Night: A 40 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 50.
Chance Rain
 Friday

Friday: Mostly sunny, with a high near 73.
Mostly Sunny
 Friday
Night
Friday Night: Mostly clear, with a low around 51.
Mostly Clear
 Saturday

Saturday: Sunny, with a high near 76.
Sunny
Hi 64 °F Lo 47 °F Hi 64 °F Lo 49 °F Hi 65 °F Lo 50 °F Hi 73 °F Lo 51 °F Hi 76 °F

 

This Afternoon
 
 A 30 percent chance of rain, mainly after 5pm. Mostly sunny, with a high near 64. West wind around 6 mph.
Tonight
 
 A slight chance of rain before 10pm, then a chance of rain after 4am. Increasing clouds, with a low around 47. West northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Wednesday
 
 A chance of rain and thunderstorms before 4pm, then a slight chance of showers and thunderstorms between 4pm and 5pm, then a slight chance of rain and thunderstorms after 5pm. Partly sunny, with a high near 64. Calm wind becoming south southwest around 5 mph. Chance of precipitation is 40%.
Wednesday Night
 
 A slight chance of rain before 2am, then a slight chance of rain after 4am. Increasing clouds, with a low around 49. Light and variable wind. Chance of precipitation is 20%.
Thursday
 
 Rain likely, mainly between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 65. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%.
Thursday Night
 
 A 40 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 50.
Friday
 
 Mostly sunny, with a high near 73.
Friday Night
 
 Mostly clear, with a low around 51.
Saturday
 
 Sunny, with a high near 76.
Saturday Night
 
 Clear, with a low around 53.
Sunday
 
 Sunny, with a high near 81.
Sunday Night
 
 Clear, with a low around 56.
Monday
 
 Sunny, with a high near 87.
Monday Night
 
 Mostly clear, with a low around 58.
Tuesday
 
 Sunny, with a high near 87.

 

Forecast from NOAA-NWS for Jamestown CA.