National Weather Service Forecast for: Janesville CA
Issued by: National Weather Service Reno, NV
Updated: 4:30 pm PDT Apr 6, 2026
 
Tonight

Tonight: Mostly clear, with a low around 41. West wind 5 to 10 mph.
Mostly Clear
Tuesday

Tuesday: Sunny, with a high near 73. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Sunny
Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 42. West wind 5 to 10 mph, with gusts as high as 20 mph.
Partly Cloudy
Wednesday

Wednesday: Mostly sunny, with a high near 72. Light southwest wind becoming west 5 to 10 mph in the afternoon.
Mostly Sunny
Wednesday
Night
Wednesday Night: Mostly clear, with a low around 42. West wind 5 to 10 mph becoming light  after midnight. Winds could gust as high as 20 mph.
Mostly Clear
Thursday

Thursday: A 30 percent chance of showers and thunderstorms after 11am.  Mostly sunny, with a high near 67. Calm wind becoming southwest around 5 mph in the afternoon.
Chance
Showers
Thursday
Night
Thursday Night: A 30 percent chance of showers.  Mostly cloudy, with a low around 43.
Chance
Showers
Friday

Friday: Showers likely, with thunderstorms also possible after 11am.  Mostly cloudy, with a high near 63.
Showers
Likely
Friday
Night
Friday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 41.
Chance
Showers
Lo 41 °F Hi 73 °F Lo 42 °F Hi 72 °F Lo 42 °F Hi 67 °F Lo 43 °F Hi 63 °F Lo 41 °F

 

Tonight
 
Mostly clear, with a low around 41. West wind 5 to 10 mph.
Tuesday
 
Sunny, with a high near 73. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Tuesday Night
 
Partly cloudy, with a low around 42. West wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
 
Mostly sunny, with a high near 72. Light southwest wind becoming west 5 to 10 mph in the afternoon.
Wednesday Night
 
Mostly clear, with a low around 42. West wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Thursday
 
A 30 percent chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 67. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
 
A 30 percent chance of showers. Mostly cloudy, with a low around 43.
Friday
 
Showers likely, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 63.
Friday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 41.
Saturday
 
A chance of showers. Snow level 7300 feet. Partly sunny, with a high near 59.
Saturday Night
 
A chance of showers. Snow level 7500 feet lowering to 6500 feet after midnight . Mostly cloudy, with a low around 37.
Sunday
 
A chance of showers. Snow level 6100 feet. Partly sunny, with a high near 55.
Sunday Night
 
A slight chance of rain and snow showers. Snow level 6300 feet lowering to 5500 feet after midnight . Partly cloudy, with a low around 34.
Monday
 
Mostly sunny, with a high near 59.

 

Forecast from NOAA-NWS for Janesville CA.