National Weather Service Forecast for: Janesville CA
Issued by: National Weather Service Reno, NV
Updated: 10:30 pm PST Dec 4, 2025
 
Overnight

Overnight: Partly cloudy, with a low around 35. West wind around 5 mph.
Partly Cloudy
Friday

Friday: Mostly sunny, with a high near 55. Calm wind.
Mostly Sunny
Friday
Night
Friday Night: Mostly clear, with a low around 37. West wind around 5 mph.
Mostly Clear
Saturday

Saturday: Mostly sunny, with a high near 55. West wind around 5 mph becoming calm.
Mostly Sunny
Saturday
Night
Saturday Night: Partly cloudy, with a low around 32. Calm wind.
Partly Cloudy
Sunday

Sunday: Mostly sunny, with a high near 55. Calm wind.
Mostly Sunny
Sunday
Night
Sunday Night: Partly cloudy, with a low around 33.
Partly Cloudy
Monday

Monday: Mostly sunny, with a high near 55.
Mostly Sunny
Monday
Night
Monday Night: Partly cloudy, with a low around 36.
Partly Cloudy
Lo 35 °F Hi 55 °F Lo 37 °F Hi 55 °F Lo 32 °F Hi 55 °F Lo 33 °F Hi 55 °F Lo 36 °F

 

Overnight
 
Partly cloudy, with a low around 35. West wind around 5 mph.
Friday
 
Mostly sunny, with a high near 55. Calm wind.
Friday Night
 
Mostly clear, with a low around 37. West wind around 5 mph.
Saturday
 
Mostly sunny, with a high near 55. West wind around 5 mph becoming calm.
Saturday Night
 
Partly cloudy, with a low around 32. Calm wind.
Sunday
 
Mostly sunny, with a high near 55. Calm wind.
Sunday Night
 
Partly cloudy, with a low around 33.
Monday
 
Mostly sunny, with a high near 55.
Monday Night
 
Partly cloudy, with a low around 36.
Tuesday
 
Partly sunny, with a high near 60.
Tuesday Night
 
Mostly cloudy, with a low around 39.
Wednesday
 
Mostly sunny, with a high near 61.
Wednesday Night
 
Partly cloudy, with a low around 37.
Thursday
 
Sunny, with a high near 59.

 

Forecast from NOAA-NWS for Janesville CA.