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

34°F

1°C

Humidity 81%
Wind Speed N 16 mph
Barometer 29.79 in
Dewpoint 28°F (-2°C)
Visibility 7.00 mi
Wind Chill24°F (-4°C)
Last update 6 Feb 8:45 am CST
Extended Forecast for

South Beloit IL

  • Today

    Today: Mostly cloudy, with a temperature falling to around 30 by 5pm. Breezy, with a north northwest wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 36 °F⇓

    Mostly Cloudy
    and Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 6. Wind chill values as low as -3. North wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.

    Low: 6 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 21. Wind chill values as low as -4. North wind around 5 mph becoming calm.

    High: 21 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 16. South southeast wind 5 to 10 mph.

    Low: 16 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 33. South southeast wind 5 to 10 mph.

    High: 33 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, with a temperature falling to around 30 by 5pm. Breezy, with a north northwest wind 15 to 20 mph, with gusts as high as 35 mph.
Tonight
Mostly clear, with a low around 6. Wind chill values as low as -3. North wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.
Saturday
Increasing clouds, with a high near 21. Wind chill values as low as -4. North wind around 5 mph becoming calm.
Saturday Night
Mostly cloudy, with a low around 16. South southeast wind 5 to 10 mph.
Sunday
Mostly cloudy, with a high near 33. South southeast wind 5 to 10 mph.
Sunday Night
Mostly cloudy, with a low around 22.
Monday
Partly sunny, with a high near 42.
Monday Night
Partly cloudy, with a low around 30.
Tuesday
Partly sunny, with a high near 44.
Tuesday Night
A chance of rain before midnight, then a chance of rain and snow. Cloudy, with a low around 28.
Wednesday
Mostly cloudy, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 22.
Thursday
Mostly cloudy, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Beloit IL
 42.5°N 89.05°W
Last Update:
8:06 am CST Feb 6, 2026
Forecast Valid:
9am CST Feb 6, 2026-6pm CST Feb 12, 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