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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

-4°F

-20°C

Humidity 100%
Wind Speed NW 6 mph
Barometer 30.39 in
Dewpoint -4°F (-20°C)
Visibility 10.00 mi
Wind Chill-17°F (-27°C)
Last update 4 Dec 6:45 am CST
Extended Forecast for

South Beloit IL

  • Today

    Today: Sunny, with a high near 12. Wind chill values as low as -10. North northwest wind around 5 mph becoming calm.

    High: 12 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a temperature falling to near -1 by 8pm, then rising to around 8 during the remainder of the night. Wind chill values as low as -14. South wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: -1 °F⇑

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 27. Wind chill values as low as -4. South southwest wind around 10 mph, with gusts as high as 15 mph.

    High: 27 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 18. South southwest wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 15 mph.

    Low: 18 °F

    Chance Snow
    then Mostly
    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 26. West northwest wind around 5 mph, with gusts as high as 10 mph.

    High: 26 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 8.

    Low: 8 °F

    Chance Snow

  • Sunday

    Sunday: A 20 percent chance of snow before noon. Mostly sunny, with a high near 18.

    High: 18 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -1.

    Low: -1 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 20.

    High: 20 °F

    Mostly Cloudy

Detailed Forecast

Today
Sunny, with a high near 12. Wind chill values as low as -10. North northwest wind around 5 mph becoming calm.
Tonight
Partly cloudy, with a temperature falling to near -1 by 8pm, then rising to around 8 during the remainder of the night. Wind chill values as low as -14. South wind 5 to 10 mph, with gusts as high as 15 mph.
Friday
Partly sunny, with a high near 27. Wind chill values as low as -4. South southwest wind around 10 mph, with gusts as high as 15 mph.
Friday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 18. South southwest wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 15 mph.
Saturday
Partly sunny, with a high near 26. West northwest wind around 5 mph, with gusts as high as 10 mph.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 8.
Sunday
A 20 percent chance of snow before noon. Mostly sunny, with a high near 18.
Sunday Night
Mostly cloudy, with a low around -1.
Monday
Mostly cloudy, with a high near 20.
Monday Night
Snow likely, mainly after midnight. Mostly cloudy, with a low around 12.
Tuesday
Mostly cloudy, with a high near 31.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 17.
Wednesday
A chance of snow. Mostly cloudy, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Beloit IL
 42.5°N 89.05°W
Last Update:
6:11 am CST Dec 4, 2025
Forecast Valid:
7am CST Dec 4, 2025-6pm CST Dec 10, 2025
 
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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