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

32°F

0°C

Humidity 93%
Wind Speed NW 9 mph
Barometer 29.97 in
Dewpoint 30°F (-1°C)
Visibility 7.00 mi
Wind Chill24°F (-4°C)
Last update 3 Dec 12:45 pm CST
Extended Forecast for

South Beloit IL

  • This Afternoon

    This Afternoon: A 20 percent chance of snow before 3pm. Mostly cloudy, with a high near 32. Northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 32 °F

    Slight Chance
    Snow

  • Tonight

    Tonight: Partly cloudy, with a low around -2. Wind chill values as low as -11. North northwest wind 5 to 10 mph.

    Low: -2 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny and cold, with a high near 10. Wind chill values as low as -13. North northwest wind around 5 mph becoming calm in the morning.

    High: 10 °F

    Cold

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -3. Light south southwest wind increasing to 5 to 10 mph after midnight. Winds could gust as high as 15 mph.

    Low: -3 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 24. South southwest wind around 10 mph, with gusts as high as 15 mph.

    High: 24 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of snow showers before midnight. Mostly cloudy, with a low around 16.

    Low: 16 °F

    Chance Snow
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 27.

    High: 27 °F

    Mostly Cloudy

  • Saturday Night

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

    Low: 8 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: Partly sunny, with a high near 20.

    High: 20 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of snow before 3pm. Mostly cloudy, with a high near 32. Northwest wind around 10 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around -2. Wind chill values as low as -11. North northwest wind 5 to 10 mph.
Thursday
Sunny and cold, with a high near 10. Wind chill values as low as -13. North northwest wind around 5 mph becoming calm in the morning.
Thursday Night
Partly cloudy, with a low around -3. Light south southwest wind increasing to 5 to 10 mph after midnight. Winds could gust as high as 15 mph.
Friday
Partly sunny, with a high near 24. South southwest wind around 10 mph, with gusts as high as 15 mph.
Friday Night
A 30 percent chance of snow showers before midnight. Mostly cloudy, with a low around 16.
Saturday
Mostly cloudy, with a high near 27.
Saturday Night
A chance of snow after midnight. Mostly cloudy, with a low around 8.
Sunday
Partly sunny, with a high near 20.
Sunday Night
Mostly cloudy, with a low around -3.
Monday
Partly sunny, with a high near 21.
Monday Night
A chance of snow. Mostly cloudy, with a low around 11.
Tuesday
Mostly cloudy, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Beloit IL
 42.5°N 89.05°W
Last Update:
1:06 pm CST Dec 3, 2025
Forecast Valid:
1pm CST Dec 3, 2025-6pm CST Dec 9, 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