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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

-11°F

-24°C

Humidity 48%
Wind Speed NW 12 mph
Barometer 30.73 in
Dewpoint -26°F (-32°C)
Visibility 10.00 mi
Wind Chill-31°F (-35°C)
Last update 23 Jan 10:45 am CST
Extended Forecast for

South Beloit IL

Cold Weather Advisory January 23, 12:00pm until January 24, 09:00am
Extreme Cold Warning January 23, 11:16am until January 23, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory
Extreme Cold Warning
  •  
    Extreme Cold Warning January 23, 11:16am until January 23, 12:00pm

    NOW until 12:00pm Fri

    Extreme Cold Warning

  • Today

    High: -5 °F

    Cold

  • Tonight

    Tonight: Partly cloudy, with a low around -15. Wind chill values as low as -29. Northwest wind around 5 mph, with gusts as high as 15 mph.

    Low: -15 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of snow after noon. Mostly cloudy and cold, with a high near 3. Wind chill values as low as -15. Calm wind.

    High: 3 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday Night

    Saturday Night: A 30 percent chance of snow, mainly after midnight. Cloudy, with a low around -2. Wind chill values as low as -10. Calm wind becoming north around 5 mph after midnight. Winds could gust as high as 10 mph.

    Low: -2 °F

    Chance Snow

  • Sunday

    Sunday: A 30 percent chance of snow, mainly before noon. Mostly cloudy and cold, with a high near 10. North wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 10 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -7.

    Low: -7 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny and cold, with a high near 9.

    High: 9 °F

    Cold

  • Monday Night

    Monday Night: Partly cloudy, with a low around 2.

    Low: 2 °F

    Partly Cloudy

Detailed Forecast

Today
Sunny and cold, with a high near -5. Wind chill values as low as -31. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around -15. Wind chill values as low as -29. Northwest wind around 5 mph, with gusts as high as 15 mph.
Saturday
A 20 percent chance of snow after noon. Mostly cloudy and cold, with a high near 3. Wind chill values as low as -15. Calm wind.
Saturday Night
A 30 percent chance of snow, mainly after midnight. Cloudy, with a low around -2. Wind chill values as low as -10. Calm wind becoming north around 5 mph after midnight. Winds could gust as high as 10 mph.
Sunday
A 30 percent chance of snow, mainly before noon. Mostly cloudy and cold, with a high near 10. North wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday Night
Mostly cloudy, with a low around -7.
Monday
Mostly sunny and cold, with a high near 9.
Monday Night
Partly cloudy, with a low around 2.
Tuesday
Partly sunny, with a high near 16.
Tuesday Night
Partly cloudy, with a low around -2.
Wednesday
Mostly sunny, with a high near 11.
Wednesday Night
Mostly cloudy, with a low around -5.
Thursday
Mostly sunny and cold, with a high near 10.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Beloit IL
 42.49°N 89.02°W
Last Update:
9:17 am CST Jan 23, 2026
Forecast Valid:
11am CST Jan 23, 2026-6pm CST Jan 29, 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