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

34°F

1°C

Humidity 32%
Wind Speed W 14 mph
Barometer 29.72 in
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 25 Feb 3:45 pm CST
Extended Forecast for

Beloit WI

  • Tonight

    Tonight: Partly cloudy, with a low around 17. Northwest wind around 5 mph becoming calm in the evening.

    Low: 17 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 42. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 42 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28. Southwest wind around 5 mph.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 58. Southwest wind 5 to 15 mph, with gusts as high as 30 mph.

    High: 58 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 26. West wind 5 to 10 mph becoming northwest after midnight.

    Low: 26 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Snow likely, mainly after noon. Cloudy, with a high near 32. North wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 32 °F

    Chance Snow
    then Snow
    Likely

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 15. North wind 5 to 10 mph.

    Low: 15 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Increasing clouds, with a high near 29. East wind 5 to 10 mph.

    High: 29 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: A 30 percent chance of snow, mainly before midnight. Cloudy during the early evening, then gradual clearing, with a low around 17.

    Low: 17 °F

    Chance Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 17. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 42. Light south wind becoming southwest 5 to 10 mph in the morning.
Thursday Night
Mostly clear, with a low around 28. Southwest wind around 5 mph.
Friday
Sunny, with a high near 58. Southwest wind 5 to 15 mph, with gusts as high as 30 mph.
Friday Night
Increasing clouds, with a low around 26. West wind 5 to 10 mph becoming northwest after midnight.
Saturday
Snow likely, mainly after noon. Cloudy, with a high near 32. North wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 15. North wind 5 to 10 mph.
Sunday
A 20 percent chance of snow after noon. Increasing clouds, with a high near 29. East wind 5 to 10 mph.
Sunday Night
A 30 percent chance of snow, mainly before midnight. Cloudy during the early evening, then gradual clearing, with a low around 17.
Monday
Mostly sunny, with a high near 35.
Monday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 21.
Tuesday
A 30 percent chance of snow. Mostly sunny, with a high near 39.
Tuesday Night
A 20 percent chance of snow. Mostly clear, with a low around 24.
Wednesday
A 20 percent chance of rain. Sunny, with a high near 46.
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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:
3:36 pm CST Feb 25, 2026
Forecast Valid:
4pm CST Feb 25, 2026-6pm CST Mar 4, 2026
 
Forecast Discussion
 
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Additional Resources

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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