National Weather Service Forecast for: Janesville CA
Issued by: National Weather Service Reno, NV
Updated: 9:15 pm PST Dec 22, 2025
 
Overnight

Overnight: A 20 percent chance of rain. Mostly cloudy, with a low around 39. Southeast wind around 5 mph.
Slight Chance
Rain
 Tuesday

Tuesday: A 30 percent chance of rain, mainly after 1pm. Snow level 7100 feet. Partly sunny, with a high near 55. South wind 5 to 10 mph, with gusts as high as 25 mph.
Chance Rain
 Tuesday
Night
Tuesday Night: Rain, mainly after 10pm. Snow level 7400 feet. Low around 39. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Rain
 Wednesday

Wednesday: Rain. Snow level 6400 feet lowering to 5600 feet. High near 46. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Rain
 Wednesday
Night
Wednesday Night: Rain. Snow level 5800 feet. Low around 35. South wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Rain
 Christmas
Day
Christmas Day: Rain before 1pm, then rain and snow. Snow level 5200 feet. High near 41. South wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Rain then
Rain/Snow
 Thursday
Night
Thursday Night: Rain and snow, becoming all snow after 10pm. Low around 31. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Rain/Snow
then Snow
 Friday

Friday: Snow, mainly before 4pm. Mostly cloudy, with a high near 38.
Snow
 Friday
Night
Friday Night: A chance of snow, mainly before 10pm. Mostly cloudy, with a low around 21.
Chance Snow
Lo 39 °F Hi 55 °F Lo 39 °F Hi 46 °F Lo 35 °F Hi 41 °F Lo 31 °F Hi 38 °F Lo 21 °F

Winter Storm Warning
 

Overnight
 
 A 20 percent chance of rain. Mostly cloudy, with a low around 39. Southeast wind around 5 mph.
Tuesday
 
 A 30 percent chance of rain, mainly after 1pm. Snow level 7100 feet. Partly sunny, with a high near 55. South wind 5 to 10 mph, with gusts as high as 25 mph.
Tuesday Night
 
 Rain, mainly after 10pm. Snow level 7400 feet. Low around 39. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday
 
 Rain. Snow level 6400 feet lowering to 5600 feet. High near 46. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
 
 Rain. Snow level 5800 feet. Low around 35. South wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Christmas Day
 
 Rain before 1pm, then rain and snow. Snow level 5200 feet. High near 41. South wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Thursday Night
 
 Rain and snow, becoming all snow after 10pm. Low around 31. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Friday
 
 Snow, mainly before 4pm. Mostly cloudy, with a high near 38.
Friday Night
 
 A chance of snow, mainly before 10pm. Mostly cloudy, with a low around 21.
Saturday
 
 Mostly sunny, with a high near 35.
Saturday Night
 
 Partly cloudy, with a low around 18.
Sunday
 
 Partly sunny, with a high near 36.
Sunday Night
 
 Mostly cloudy, with a low around 19.
Monday
 
 Mostly sunny, with a high near 38.

 

Forecast from NOAA-NWS for Janesville CA.