Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

41°F

5°C

Humidity 70%
Wind Speed W 10 mph
Barometer 29.58 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 13 Jan 10:35 pm CST
Extended Forecast for

South Beloit IL

  • Tonight

    Tonight: A 30 percent chance of snow, mainly between 3am and 5am.  Cloudy, with a low around 22. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 22 °F

    Cloudy then
    Chance Snow
    and Blustery

  • Wednesday

    Wednesday: A 20 percent chance of snow before 8am.  Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 21 by 9am. Blustery, with a north northwest wind 15 to 25 mph, with gusts as high as 30 mph.

    High: 24 °F

    Blustery.
    Slight Chance
    Snow then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 11. North northwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 11 °F

    Partly Cloudy

  • Thursday

    Thursday: Increasing clouds, with a high near 25. Northwest wind 5 to 10 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 25 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Snow.  Low around 21. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 90%.

    Low: 21 °F

    Snow

  • Friday

    Friday: Snow likely, mainly before noon.  Mostly cloudy, with a high near 34. Chance of precipitation is 60%.

    High: 34 °F

    Snow Likely

  • Friday Night

    Friday Night: A 40 percent chance of snow.  Mostly cloudy, with a low around 12.

    Low: 12 °F

    Chance Snow

  • Saturday

    Saturday: A chance of snow before noon.  Mostly cloudy, with a high near 16.

    High: 16 °F

    Chance Snow
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 4.

    Low: 4 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of snow, mainly between 3am and 5am. Cloudy, with a low around 22. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday
A 20 percent chance of snow before 8am. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 21 by 9am. Blustery, with a north northwest wind 15 to 25 mph, with gusts as high as 30 mph.
Wednesday Night
Partly cloudy, with a low around 11. North northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday
Increasing clouds, with a high near 25. Northwest wind 5 to 10 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Snow. Low around 21. South southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Friday
Snow likely, mainly before noon. Mostly cloudy, with a high near 34. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 12.
Saturday
A chance of snow before noon. Mostly cloudy, with a high near 16.
Saturday Night
Mostly cloudy, with a low around 4.
Sunday
Partly sunny, with a high near 15.
Sunday Night
Mostly cloudy, with a low around 4.
M.L.King Day
Partly sunny, with a high near 14.
Monday Night
Partly cloudy, with a low around -2.
Tuesday
Mostly sunny, with a high near 13.
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ABOUT THIS FORECAST

 
Point Forecast:
South Beloit IL
 42.5°N 89.05°W
9:31 pm CST Jan 13, 2026
10pm CST Jan 13, 2026-6pm CST Jan 20, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database