National Weather Service Forecast for: Janesville CA
Issued by: National Weather Service Reno, NV
Updated: 11:30 am PDT May 26, 2026
 
This
Afternoon
This Afternoon: Showers and possibly a thunderstorm. Snow level 6400 feet. High near 55. West wind around 5 mph. Chance of precipitation is 80%.
Showers

 Tonight

Tonight: Showers, mainly before 8pm. Snow level 6300 feet. Low around 37. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Showers then
Chance
Showers
 Wednesday

Wednesday: Showers likely before 2pm, then showers and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Snow level 6100 feet rising to 7200 feet in the afternoon. High near 54. West wind around 5 mph. Chance of precipitation is 90%.
Showers

 Wednesday
Night
Wednesday Night: A 40 percent chance of showers before 8pm. Snow level 7100 feet. Partly cloudy, with a low around 37. Calm wind.
Chance
Showers then
Partly Cloudy
 Thursday

Thursday: A slight chance of showers, then showers likely and possibly a thunderstorm after 11am. Snow level 6800 feet rising to 8300 feet in the afternoon. Partly sunny, with a high near 64. Calm wind becoming southeast around 5 mph. Chance of precipitation is 70%.
Showers
Likely

 Thursday
Night
Thursday Night: A 50 percent chance of showers, mainly before 11pm. Mostly cloudy, with a low around 42. West wind around 5 mph.
Chance
Showers then
Slight Chance
Showers
 Friday

Friday: A 50 percent chance of showers. Partly sunny, with a high near 65.
Chance
Showers

 Friday
Night
Friday Night: A slight chance of showers before 11pm. Mostly cloudy, with a low around 43.
Slight Chance
Showers then
Partly Cloudy
 Saturday

Saturday: A slight chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 71.
Slight Chance
T-storms
Hi 55 °F Lo 37 °F Hi 54 °F Lo 37 °F Hi 64 °F Lo 42 °F Hi 65 °F Lo 43 °F Hi 71 °F

 

This Afternoon
 
 Showers and possibly a thunderstorm. Snow level 6400 feet. High near 55. West wind around 5 mph. Chance of precipitation is 80%.
Tonight
 
 Showers, mainly before 8pm. Snow level 6300 feet. Low around 37. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Wednesday
 
 Showers likely before 2pm, then showers and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Snow level 6100 feet rising to 7200 feet in the afternoon. High near 54. West wind around 5 mph. Chance of precipitation is 90%.
Wednesday Night
 
 A 40 percent chance of showers before 8pm. Snow level 7100 feet. Partly cloudy, with a low around 37. Calm wind.
Thursday
 
 A slight chance of showers, then showers likely and possibly a thunderstorm after 11am. Snow level 6800 feet rising to 8300 feet in the afternoon. Partly sunny, with a high near 64. Calm wind becoming southeast around 5 mph. Chance of precipitation is 70%.
Thursday Night
 
 A 50 percent chance of showers, mainly before 11pm. Mostly cloudy, with a low around 42. West wind around 5 mph.
Friday
 
 A 50 percent chance of showers. Partly sunny, with a high near 65.
Friday Night
 
 A slight chance of showers before 11pm. Mostly cloudy, with a low around 43.
Saturday
 
 A slight chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 71.
Saturday Night
 
 Mostly clear, with a low around 42.
Sunday
 
 Sunny, with a high near 75.
Sunday Night
 
 Mostly clear, with a low around 45.
Monday
 
 Sunny, with a high near 81.

 

Forecast from NOAA-NWS for Janesville CA.