National Weather Service Forecast for: Janesville CA
Issued by: National Weather Service Reno, NV
Updated: 4:30 am PDT Jun 30, 2026
 
Today

Today: Sunny, with a high near 82. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Sunny
 Tonight

Tonight: Mostly clear, with a low around 46. West wind 5 to 10 mph, with gusts as high as 20 mph.
Mostly Clear
 Wednesday

Wednesday: Sunny, with a high near 83. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 50. West wind 5 to 10 mph, with gusts as high as 20 mph.
Mostly Clear
 Thursday

Thursday: Mostly sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.
Mostly Sunny
 Thursday
Night
Thursday Night: Mostly clear, with a low around 51. West wind 5 to 10 mph, with gusts as high as 20 mph.
Mostly Clear
 Friday

Friday: Sunny, with a high near 87.
Sunny
 Friday
Night
Friday Night: Mostly clear, with a low around 54.
Mostly Clear
 Independence
Day
Independence Day: Sunny, with a high near 93.
Sunny
Hi 82 °F Lo 46 °F Hi 83 °F Lo 50 °F Hi 84 °F Lo 51 °F Hi 87 °F Lo 54 °F Hi 93 °F

 

Today
 
 Sunny, with a high near 82. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
 
 Mostly clear, with a low around 46. West wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
 
 Sunny, with a high near 83. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Wednesday Night
 
 Mostly clear, with a low around 50. West wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
 
 Mostly sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
 
 Mostly clear, with a low around 51. West wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
 
 Sunny, with a high near 87.
Friday Night
 
 Mostly clear, with a low around 54.
Independence Day
 
 Sunny, with a high near 93.
Saturday Night
 
 Clear, with a low around 57.
Sunday
 
 Sunny, with a high near 93.
Sunday Night
 
 Partly cloudy, with a low around 57.
Monday
 
 Sunny, with a high near 91.

 

Forecast from NOAA-NWS for Janesville CA.