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.

Overcast and Breezy

N/A

Humidity NA
Wind Speed W 23 G 28 mph
Barometer 30.05 in
Dewpoint N/A
Visibility 10.00 mi
Last update 26 Nov 9:15 pm CST
Extended Forecast for

South Beloit IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 25. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 35 mph.

    Low: 25 °F

    Mostly Cloudy
    and Blustery

  • Thanksgiving Day

    Thanksgiving Day: Partly sunny, with a high near 30. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 30 °F

    Partly Sunny
    and Blustery

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 18. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 18 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 30. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 30 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Snow likely after midnight. Mostly cloudy, with a low around 18. Calm wind becoming southeast around 5 mph after midnight. Winds could gust as high as 10 mph. Chance of precipitation is 70%.

    Low: 18 °F

    Mostly Cloudy
    then Snow
    Likely

  • Saturday

    Saturday: Snow. The snow could be heavy at times. High near 29. Chance of precipitation is 100%.

    High: 29 °F

    Heavy Snow

  • Saturday Night

    Saturday Night: Snow. Low around 23. Chance of precipitation is 90%.

    Low: 23 °F

    Snow

  • Sunday

    Sunday: A chance of snow showers before noon. Partly sunny, with a high near 27.

    High: 27 °F

    Chance Snow
    Showers then
    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 0.

    Low: 0 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 25. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 35 mph.
Thanksgiving Day
Partly sunny, with a high near 30. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Thursday Night
Mostly cloudy, with a low around 18. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Friday
Mostly sunny, with a high near 30. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Friday Night
Snow likely after midnight. Mostly cloudy, with a low around 18. Calm wind becoming southeast around 5 mph after midnight. Winds could gust as high as 10 mph. Chance of precipitation is 70%.
Saturday
Snow. The snow could be heavy at times. High near 29. Chance of precipitation is 100%.
Saturday Night
Snow. Low around 23. Chance of precipitation is 90%.
Sunday
A chance of snow showers before noon. Partly sunny, with a high near 27.
Sunday Night
Mostly cloudy, with a low around 0.
Monday
Partly sunny, with a high near 16.
Monday Night
Mostly cloudy, with a low around 0.
Tuesday
Partly sunny, with a high near 18.
Tuesday Night
Mostly cloudy, with a low around 7.
Wednesday
Mostly cloudy, with a high near 27.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Beloit IL
 42.5°N 89.05°W
Last Update:
9:11 pm CST Nov 26, 2025
Forecast Valid:
9pm CST Nov 26, 2025-6pm CST Dec 3, 2025
 
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