Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

18°F

-8°C

Humidity 73%
Wind Speed NW 9 mph
Barometer 29.88 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill7°F (-14°C)
Last update 2 Jan 4:30 am CST
Extended Forecast for

South Beloit IL

  • Today

    Today: Mostly sunny, with a high near 23. Northwest wind around 5 mph, with gusts as high as 10 mph.

    High: 23 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 15. North northwest wind around 5 mph becoming calm.

    Low: 15 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 26. Calm wind becoming west around 5 mph in the afternoon.

    High: 26 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 10. West northwest wind around 5 mph becoming calm.

    Low: 10 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 28. Calm wind becoming south around 5 mph in the afternoon. Winds could gust as high as 15 mph.

    High: 28 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of snow and freezing rain before 9pm, then a slight chance of freezing rain between 9pm and midnight.  Mostly cloudy, with a low around 23. Chance of precipitation is 20%.

    Low: 23 °F

    Slight Chance
    Wintry Mix
    then Partly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

  • Monday Night

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

    Low: 30 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 23. Northwest wind around 5 mph, with gusts as high as 10 mph.
Tonight
Mostly cloudy, with a low around 15. North northwest wind around 5 mph becoming calm.
Saturday
Mostly cloudy, with a high near 26. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 10. West northwest wind around 5 mph becoming calm.
Sunday
Mostly sunny, with a high near 28. Calm wind becoming south around 5 mph in the afternoon. Winds could gust as high as 15 mph.
Sunday Night
A slight chance of snow and freezing rain before 9pm, then a slight chance of freezing rain between 9pm and midnight. Mostly cloudy, with a low around 23. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 40.
Monday Night
Mostly cloudy, with a low around 30.
Tuesday
Partly sunny, with a high near 42.
Tuesday Night
Mostly cloudy, with a low around 27.
Wednesday
Partly sunny, with a high near 42.
Wednesday Night
Mostly cloudy, with a low around 31.
Thursday
A chance of rain. Mostly cloudy, with a high near 47.
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ABOUT THIS FORECAST

 
Point Forecast:
South Beloit IL
 42.5°N 89.05°W
2:56 am CST Jan 2, 2026
4am CST Jan 2, 2026-6pm CST Jan 8, 2026
 
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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