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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

14°F

-10°C

Humidity 73%
Wind Speed NW 12 mph
Barometer 30.04 in
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill0°F (-18°C)
Last update 15 Jan 12:55 am CST
Extended Forecast for

South Beloit IL

  • Overnight

    Overnight: Partly cloudy, with a low around 12. Wind chill values as low as zero. North wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 12 °F

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow after 5pm. Mostly sunny, with a high near 24. Wind chill values as low as 1. North wind 5 to 10 mph becoming south in the afternoon. Winds could gust as high as 20 mph.

    High: 24 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Thursday Night

    Thursday Night: Snow. Temperature rising to around 28 by 4am. South southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    Low: 23 °F⇑

    Snow

  • Friday

    Friday: A 50 percent chance of snow showers. Mostly cloudy, with a high near 35. West wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 35 °F

    Chance Snow
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 10. West northwest wind around 15 mph, with gusts as high as 20 mph.

    Low: 10 °F

    Chance Snow

  • Saturday

    Saturday: A 30 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 16.

    High: 16 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 3.

    Low: 3 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 15.

    High: 15 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 3.

    Low: 3 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 12. Wind chill values as low as zero. North wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday
A 20 percent chance of snow after 5pm. Mostly sunny, with a high near 24. Wind chill values as low as 1. North wind 5 to 10 mph becoming south in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Snow. Temperature rising to around 28 by 4am. South southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Friday
A 50 percent chance of snow showers. Mostly cloudy, with a high near 35. West wind 10 to 15 mph, with gusts as high as 30 mph.
Friday Night
A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 10. West northwest wind around 15 mph, with gusts as high as 20 mph.
Saturday
A 30 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 16.
Saturday Night
Mostly cloudy, with a low around 3.
Sunday
Partly sunny, with a high near 15.
Sunday Night
Mostly cloudy, with a low around 3.
M.L.King Day
Partly sunny and cold, with a high near 10.
Monday Night
Partly cloudy, with a low around -1.
Tuesday
Mostly sunny, with a high near 15.
Tuesday Night
Mostly cloudy, with a low around 6.
Wednesday
Partly sunny, with a high near 22.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Beloit IL
 42.5°N 89.05°W
Last Update:
12:11 am CST Jan 15, 2026
Forecast Valid:
1am CST Jan 15, 2026-6pm CST Jan 21, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation