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

9°F

-13°C

Humidity 72%
Wind Speed N 9 mph
Barometer 30.39 in
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill-4°F (-20°C)
Last update 30 Jan 7:45 am CST
Extended Forecast for

South Beloit IL

  • Today

    Today: Scattered snow showers, mainly between 11am and 5pm. Partly sunny, with a high near 15. Wind chill values as low as -10. North wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    High: 15 °F

    Isolated Snow
    Showers then
    Scattered
    Snow Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 5. Wind chill values as low as -9. North northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 5 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 20. Wind chill values as low as -9. North northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 20 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 2. Northwest wind around 5 mph becoming calm.

    Low: 2 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 25. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 25 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 17.

    Low: 17 °F

    Chance Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Partly sunny, with a high near 26.

    High: 26 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of snow. Mostly cloudy, with a high near 27.

    High: 27 °F

    Chance Snow

Detailed Forecast

Today
Scattered snow showers, mainly between 11am and 5pm. Partly sunny, with a high near 15. Wind chill values as low as -10. North wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Tonight
Mostly cloudy, with a low around 5. Wind chill values as low as -9. North northwest wind around 10 mph, with gusts as high as 20 mph.
Saturday
Mostly sunny, with a high near 20. Wind chill values as low as -9. North northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
Mostly clear, with a low around 2. Northwest wind around 5 mph becoming calm.
Sunday
Mostly sunny, with a high near 25. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 17.
Monday
Partly sunny, with a high near 26.
Monday Night
Mostly cloudy, with a low around 14.
Tuesday
A chance of snow. Mostly cloudy, with a high near 27.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 17.
Wednesday
Mostly cloudy, with a high near 27.
Wednesday Night
Mostly cloudy, with a low around 13.
Thursday
Mostly cloudy, with a high near 28.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Beloit IL
 42.5°N 89.05°W
Last Update:
5:22 am CST Jan 30, 2026
Forecast Valid:
8am CST Jan 30, 2026-6pm CST Feb 5, 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