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.

Fair

0°F

-18°C

Humidity 84%
Wind Speed Calm
Barometer 30.37 in
Dewpoint -4°F (-20°C)
Visibility 10.00 mi
Last update 4 Feb 3:35 am CST
Extended Forecast for

5 Miles SSW Janesville WI

  • Overnight

    Overnight: Partly cloudy, with a low around 1. Calm wind.

    Low: 1 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 25. Wind chill values between zero and 10. Calm wind becoming northwest around 5 mph.

    High: 25 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 10. Calm wind becoming southwest around 5 mph after midnight.

    Low: 10 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A 20 percent chance of snow before noon. Mostly cloudy, with a high near 32. Southwest wind 5 to 15 mph.

    High: 32 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: A chance of freezing rain after midnight. Mostly cloudy, with a low around 26. West wind 5 to 15 mph. Chance of precipitation is 30%.

    Low: 26 °F

    Mostly Cloudy
    then Chance
    Freezing Rain

  • Friday

    Friday: Mostly cloudy, with a high near 38. Northwest wind around 15 mph, with gusts as high as 30 mph.

    High: 38 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 10. North wind 5 to 15 mph.

    Low: 10 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 28. North wind around 5 mph becoming southeast in the afternoon.

    High: 28 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 21.

    Low: 21 °F

    Chance Snow

Detailed Forecast

Overnight
Partly cloudy, with a low around 1. Calm wind.
Wednesday
Sunny, with a high near 25. Wind chill values between zero and 10. Calm wind becoming northwest around 5 mph.
Wednesday Night
Increasing clouds, with a low around 10. Calm wind becoming southwest around 5 mph after midnight.
Thursday
A 20 percent chance of snow before noon. Mostly cloudy, with a high near 32. Southwest wind 5 to 15 mph.
Thursday Night
A chance of freezing rain after midnight. Mostly cloudy, with a low around 26. West wind 5 to 15 mph. Chance of precipitation is 30%.
Friday
Mostly cloudy, with a high near 38. Northwest wind around 15 mph, with gusts as high as 30 mph.
Friday Night
Partly cloudy, with a low around 10. North wind 5 to 15 mph.
Saturday
Mostly sunny, with a high near 28. North wind around 5 mph becoming southeast in the afternoon.
Saturday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 21.
Sunday
Partly sunny, with a high near 33.
Sunday Night
Mostly cloudy, with a low around 20.
Monday
Mostly sunny, with a high near 40.
Monday Night
Partly cloudy, with a low around 28.
Tuesday
A 20 percent chance of rain. Partly sunny, with a high near 43.
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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:
2:57 am CST Feb 4, 2026
Forecast Valid:
3am CST Feb 4, 2026-6pm CST Feb 10, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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