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

21°F

-6°C

Humidity 93%
Wind Speed SW 9 mph
Barometer 30.04 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 2 Feb 12:35 am CST
Extended Forecast for

South Beloit IL

  • Overnight

    Overnight: Patchy freezing rain before 5am. Cloudy, with a steady temperature around 21. Southwest wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 30%.

    Low: 21 °F

    Patchy
    Freezing Rain

  • Monday

    Monday: Partly sunny, with a high near 25. West northwest wind 5 to 10 mph.

    High: 25 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 10 percent chance of snow after midnight. Mostly cloudy, with a low around 11. West northwest wind around 5 mph becoming calm in the evening.

    Low: 11 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: Sunny, with a high near 22. North wind around 5 mph, with gusts as high as 10 mph.

    High: 22 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 4. North wind around 5 mph becoming calm in the evening.

    Low: 4 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 23.

    High: 23 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 10.

    Low: 10 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A chance of rain and snow before midnight. Mostly cloudy, with a low around 25.

    Low: 25 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

Detailed Forecast

Overnight
Patchy freezing rain before 5am. Cloudy, with a steady temperature around 21. Southwest wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 30%.
Monday
Partly sunny, with a high near 25. West northwest wind 5 to 10 mph.
Monday Night
A 10 percent chance of snow after midnight. Mostly cloudy, with a low around 11. West northwest wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 22. North wind around 5 mph, with gusts as high as 10 mph.
Tuesday Night
Mostly clear, with a low around 4. North wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 23.
Wednesday Night
Mostly cloudy, with a low around 10.
Thursday
Partly sunny, with a high near 33.
Thursday Night
A chance of rain and snow before midnight. Mostly cloudy, with a low around 25.
Friday
Partly sunny, with a high near 33.
Friday Night
Partly cloudy, with a low around 8.
Saturday
Mostly sunny, with a high near 23.
Saturday Night
Mostly cloudy, with a low around 15.
Sunday
Mostly sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Beloit IL
 42.5°N 89.05°W
Last Update:
11:36 pm CST Feb 1, 2026
Forecast Valid:
1am CST Feb 2, 2026-6pm CST Feb 8, 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