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.

Partly Cloudy

14°F

-10°C

Humidity 73%
Wind Speed SW 5 mph
Barometer 30.33 in
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill6°F (-14°C)
Last update 4 Feb 8:45 pm CST
Extended Forecast for

Beloit WI

  • Tonight

    Tonight: Increasing clouds, with a low around 11. Calm wind becoming southwest around 5 mph after midnight.

    Low: 11 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Snow likely, mainly before 11am. Cloudy, with a high near 32. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 32 °F

    Snow Likely
    then Cloudy

  • Thursday Night

    Thursday Night: A chance of snow and freezing rain after midnight. Mostly cloudy, with a low around 27. West wind 5 to 10 mph. Chance of precipitation is 30%.

    Low: 27 °F

    Cloudy then
    Chance Wintry
    Mix

  • Friday

    Friday: A slight chance of snow and freezing rain before 3pm. Mostly cloudy, with a high near 37. Northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    High: 37 °F

    Slight Chance
    Wintry Mix

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming clear, with a low around 6. North wind 5 to 15 mph.

    Low: 6 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Increasing clouds, with a high near 23. North wind around 5 mph becoming southeast in the afternoon.

    High: 23 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 18. Southeast wind around 5 mph.

    Low: 18 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 35. South wind 5 to 10 mph.

    High: 35 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 23.

    Low: 23 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 11. Calm wind becoming southwest around 5 mph after midnight.
Thursday
Snow likely, mainly before 11am. Cloudy, with a high near 32. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday Night
A chance of snow and freezing rain after midnight. Mostly cloudy, with a low around 27. West wind 5 to 10 mph. Chance of precipitation is 30%.
Friday
A slight chance of snow and freezing rain before 3pm. Mostly cloudy, with a high near 37. Northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, then gradually becoming clear, with a low around 6. North wind 5 to 15 mph.
Saturday
Increasing clouds, with a high near 23. North wind around 5 mph becoming southeast in the afternoon.
Saturday Night
Mostly cloudy, with a low around 18. Southeast wind around 5 mph.
Sunday
Partly sunny, with a high near 35. South wind 5 to 10 mph.
Sunday Night
Partly cloudy, with a low around 23.
Monday
Partly sunny, with a high near 44.
Monday Night
Partly cloudy, with a low around 30.
Tuesday
Partly sunny, with a high near 44.
Tuesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 29.
Wednesday
A 30 percent chance of rain. Partly sunny, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Beloit WI
 42.52°N 89.02°W (Elev. 745 ft)
Last Update:
7:32 pm CST Feb 4, 2026
Forecast Valid:
8pm CST Feb 4, 2026-6pm CST Feb 11, 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