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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

28°F

-2°C

Humidity 80%
Wind Speed NW 10 mph
Barometer 29.83 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 6 Dec 5:15 am CST
Extended Forecast for

South Beloit IL

Winter Weather Advisory December 6, 09:00pm until December 7, 06:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Today

    Today: Mostly cloudy, with a temperature falling to around 22 by 5pm. Northwest wind around 5 mph becoming calm in the afternoon. Winds could gust as high as 15 mph.

    High: 25 °F⇓

    Mostly Cloudy

  • Tonight

    Tonight: Snow, mainly after 9pm. The snow could be heavy at times. Steady temperature around 22. Light east northeast wind becoming north northeast 5 to 10 mph after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 6 inches possible.

    Low: 22 °F

    Snow Likely
    then Heavy
    Snow

  • Sunday

    Sunday: A 20 percent chance of snow before noon. Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 13 by 5pm. Wind chill values as low as 1. North wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 20 °F⇓

    Slight Chance
    Snow then
    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 0. North wind around 5 mph becoming calm in the evening. Winds could gust as high as 15 mph.

    Low: 0 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 21. Light and variable wind becoming south southwest 5 to 10 mph in the morning.

    High: 21 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 30 percent chance of snow. Mostly cloudy, with a low around 12.

    Low: 12 °F

    Chance Snow

  • Tuesday

    Tuesday: A slight chance of rain and snow after noon. Mostly cloudy, with a high near 36. Chance of precipitation is 20%.

    High: 36 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain and snow, becoming all rain after midnight. Cloudy, with a low around 27.

    Low: 27 °F

    Rain/Snow
    then Rain
    Likely

  • Wednesday

    Wednesday: A chance of snow. Mostly cloudy, with a high near 31.

    High: 31 °F

    Chance Snow

Detailed Forecast

Today
Mostly cloudy, with a temperature falling to around 22 by 5pm. Northwest wind around 5 mph becoming calm in the afternoon. Winds could gust as high as 15 mph.
Tonight
Snow, mainly after 9pm. The snow could be heavy at times. Steady temperature around 22. Light east northeast wind becoming north northeast 5 to 10 mph after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 6 inches possible.
Sunday
A 20 percent chance of snow before noon. Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 13 by 5pm. Wind chill values as low as 1. North wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Mostly cloudy, with a low around 0. North wind around 5 mph becoming calm in the evening. Winds could gust as high as 15 mph.
Monday
Partly sunny, with a high near 21. Light and variable wind becoming south southwest 5 to 10 mph in the morning.
Monday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 12.
Tuesday
A slight chance of rain and snow after noon. Mostly cloudy, with a high near 36. Chance of precipitation is 20%.
Tuesday Night
Rain and snow, becoming all rain after midnight. Cloudy, with a low around 27.
Wednesday
A chance of snow. Mostly cloudy, with a high near 31.
Wednesday Night
Mostly cloudy, with a low around 10.
Thursday
A chance of snow. Mostly cloudy, with a high near 21.
Thursday Night
Mostly cloudy, with a low around 6.
Friday
Partly sunny, with a high near 16.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Beloit IL
 42.5°N 89.05°W
Last Update:
4:26 am CST Dec 6, 2025
Forecast Valid:
5am CST Dec 6, 2025-6pm CST Dec 12, 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