National Weather Service Forecast for: Janesville CA
Issued by: National Weather Service Reno, NV
Updated: 11:30 pm PDT Sep 12, 2026
 
Overnight

Overnight: Patchy smoke before 3am. Mostly clear, with a low around 46. Northwest wind around 10 mph, with gusts as high as 20 mph.
Patchy Smoke
Sunday

Sunday: Sunny, with a high near 74. West wind 5 to 10 mph, with gusts as high as 20 mph.
Sunny
Sunday
Night
Sunday Night: Clear, with a low around 43. West wind 5 to 10 mph becoming light  after midnight. Winds could gust as high as 20 mph.
Clear
Monday

Monday: Sunny, with a high near 74. Light and variable wind becoming east 5 to 10 mph in the morning.
Sunny
Monday
Night
Monday Night: Mostly clear, with a low around 46. East wind around 5 mph becoming calm  in the evening.
Mostly Clear
Tuesday

Tuesday: Sunny, with a high near 82. Calm wind becoming east around 5 mph.
Sunny
Tuesday
Night
Tuesday Night: Mostly clear, with a low around 48.
Mostly Clear
Wednesday

Wednesday: Sunny, with a high near 79.
Sunny
Wednesday
Night
Wednesday Night: Mostly clear, with a low around 49.
Mostly Clear
Lo 46 °F Hi 74 °F Lo 43 °F Hi 74 °F Lo 46 °F Hi 82 °F Lo 48 °F Hi 79 °F Lo 49 °F

 

Overnight
 
Patchy smoke before 3am. Mostly clear, with a low around 46. Northwest wind around 10 mph, with gusts as high as 20 mph.
Sunday
 
Sunny, with a high near 74. West wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
 
Clear, with a low around 43. West wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Monday
 
Sunny, with a high near 74. Light and variable wind becoming east 5 to 10 mph in the morning.
Monday Night
 
Mostly clear, with a low around 46. East wind around 5 mph becoming calm in the evening.
Tuesday
 
Sunny, with a high near 82. Calm wind becoming east around 5 mph.
Tuesday Night
 
Mostly clear, with a low around 48.
Wednesday
 
Sunny, with a high near 79.
Wednesday Night
 
Mostly clear, with a low around 49.
Thursday
 
Sunny, with a high near 81.
Thursday Night
 
Clear, with a low around 50.
Friday
 
Sunny, with a high near 85.
Friday Night
 
Mostly clear, with a low around 50.
Saturday
 
Sunny, with a high near 85.

 

Forecast from NOAA-NWS for Janesville CA.