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

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

A Few Clouds

23°F

-5°C

Humidity 63%
Wind Speed W 6 mph
Barometer 30.13 in
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 2 Feb 5:45 pm CST
Extended Forecast for

Janesville WI

  • Tonight

    Tonight: A slight chance of snow between midnight and 1am. Mostly cloudy, with a low around 11. West wind around 5 mph becoming calm. Chance of precipitation is 20%.

    Low: 11 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: Sunny, with a high near 22. North wind around 5 mph.

    High: 22 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 3. North wind around 5 mph becoming calm.

    Low: 3 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 24. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 24 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 9. West wind around 5 mph becoming calm.

    Low: 9 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 31. Southwest wind 5 to 10 mph.

    High: 31 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A slight chance of rain and snow after midnight. Mostly cloudy, with a low around 26. Southwest wind 10 to 15 mph becoming northwest after midnight. Chance of precipitation is 20%.

    Low: 26 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Friday

    Friday: Partly sunny, with a high near 36. Northwest wind 10 to 15 mph.

    High: 36 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 8.

    Low: 8 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of snow between midnight and 1am. Mostly cloudy, with a low around 11. West wind around 5 mph becoming calm. Chance of precipitation is 20%.
Tuesday
Sunny, with a high near 22. North wind around 5 mph.
Tuesday Night
Partly cloudy, with a low around 3. North wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 24. Calm wind becoming northwest around 5 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 9. West wind around 5 mph becoming calm.
Thursday
Mostly cloudy, with a high near 31. Southwest wind 5 to 10 mph.
Thursday Night
A slight chance of rain and snow after midnight. Mostly cloudy, with a low around 26. Southwest wind 10 to 15 mph becoming northwest after midnight. Chance of precipitation is 20%.
Friday
Partly sunny, with a high near 36. Northwest wind 10 to 15 mph.
Friday Night
Partly cloudy, with a low around 8.
Saturday
Mostly sunny, with a high near 25.
Saturday Night
Mostly cloudy, with a low around 12.
Sunday
Mostly sunny, with a high near 29.
Sunday Night
Mostly cloudy, with a low around 15.
Monday
Partly sunny, with a high near 35.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Janesville WI
 42.67°N 89.04°W (Elev. 774 ft)
Last Update:
6:06 pm CST Feb 2, 2026
Forecast Valid:
6pm CST Feb 2, 2026-6pm CST Feb 9, 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