National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast with Haze

41°F

5°C

Humidity 81%
Wind Speed SE 12 mph
Barometer 30.20 in
Dewpoint 36°F (2°C)
Visibility 7.00 mi
Wind Chill34°F (1°C)
Last update 24 Dec 11:45 am CST
Extended Forecast for

5 Miles SSW Janesville WI

  • This Afternoon

    This Afternoon: Rain likely, mainly after 5pm. Cloudy, with a high near 42. Southeast wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 42 °F

    Rain Likely

  • Tonight

    Tonight: Rain before 9pm, then a chance of drizzle between 9pm and midnight. Low around 34. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 34 °F

    Rain then
    Cloudy

  • Christmas Day

    Christmas Day: Mostly cloudy, with a high near 39. East wind 10 to 15 mph.

    High: 39 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Rain after midnight. Low around 34. Southeast wind 10 to 15 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 34 °F

    Cloudy then
    Rain

  • Friday

    Friday: A 30 percent chance of rain before noon. Cloudy, with a high near 46. Southeast wind 5 to 10 mph becoming northwest in the afternoon.

    High: 46 °F

    Chance Rain
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 33. Northwest wind around 5 mph becoming calm in the evening.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 47. Light southeast wind increasing to 5 to 10 mph in the morning.

    High: 47 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 20 percent chance of rain. Cloudy, with a low around 27. Southeast wind 5 to 15 mph becoming northwest after midnight.

    Low: 27 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Partly sunny, with a temperature falling to around 22 by 5pm. Breezy.

    High: 36 °F⇓

    Breezy.
    Mostly Cloudy
    then Slight
    Chance Snow

Detailed Forecast

This Afternoon
Rain likely, mainly after 5pm. Cloudy, with a high near 42. Southeast wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain before 9pm, then a chance of drizzle between 9pm and midnight. Low around 34. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Christmas Day
Mostly cloudy, with a high near 39. East wind 10 to 15 mph.
Thursday Night
Rain after midnight. Low around 34. Southeast wind 10 to 15 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 30 percent chance of rain before noon. Cloudy, with a high near 46. Southeast wind 5 to 10 mph becoming northwest in the afternoon.
Friday Night
Mostly cloudy, with a low around 33. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Mostly cloudy, with a high near 47. Light southeast wind increasing to 5 to 10 mph in the morning.
Saturday Night
A 20 percent chance of rain. Cloudy, with a low around 27. Southeast wind 5 to 15 mph becoming northwest after midnight.
Sunday
A 20 percent chance of snow after noon. Partly sunny, with a temperature falling to around 22 by 5pm. Breezy.
Sunday Night
Mostly cloudy, with a low around 7. Blustery.
Monday
Mostly sunny, with a high near 17. Blustery.
Monday Night
Partly cloudy, with a low around 8.
Tuesday
Partly sunny, with a high near 24.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Janesville WI
 42.63°N 89.04°W (Elev. 804 ft)
Last Update:
10:58 am CST Dec 24, 2025
Forecast Valid:
12pm CST Dec 24, 2025-6pm CST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation