Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Mostly Cloudy and Breezy

18°F

-8°C

Humidity 53%
Wind Speed W 21 G 29 mph
Barometer 30.14 in
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill1°F (-17°C)
Last update 22 Jan 1:45 pm CST
Extended Forecast for

South Beloit IL

Cold Weather Advisory January 23, 12:00pm until January 24, 09:00am
Extreme Cold Warning January 23, 03:00am until January 23, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory
Extreme Cold Warning
  • This Afternoon

    This Afternoon: A chance of flurries.  Mostly cloudy, with a high near 20. Wind chill values as low as zero. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 20 °F

    Chance
    Flurries and
    Blustery

  • Tonight

    Tonight: Intermittent flurries.  Partly cloudy, with a low around -14. Wind chill values as low as -36. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: -14 °F

    Partly Cloudy
    then
    Intermittent
    Flurries and
    Blustery

  • Friday

    Friday: Sunny and cold, with a high near -3. Wind chill values as low as -36. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: -3 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -10. Wind chill values as low as -17. Northwest wind around 5 mph becoming calm  in the evening.

    Low: -10 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow, mainly after noon.  Mostly cloudy and cold, with a high near 4. North northeast wind around 5 mph.

    High: 4 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 40 percent chance of snow.  Mostly cloudy, with a low around -1.

    Low: -1 °F

    Chance Snow

  • Sunday

    Sunday: A 30 percent chance of snow.  Mostly cloudy, with a high near 11.

    High: 11 °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

Detailed Forecast

This Afternoon
A chance of flurries. Mostly cloudy, with a high near 20. Wind chill values as low as zero. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
Intermittent flurries. Partly cloudy, with a low around -14. Wind chill values as low as -36. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Friday
Sunny and cold, with a high near -3. Wind chill values as low as -36. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly cloudy, with a low around -10. Wind chill values as low as -17. Northwest wind around 5 mph becoming calm in the evening.
Saturday
A 30 percent chance of snow, mainly after noon. Mostly cloudy and cold, with a high near 4. North northeast wind around 5 mph.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around -1.
Sunday
A 30 percent chance of snow. Mostly cloudy, with a high near 11.
Sunday Night
Mostly cloudy, with a low around -7.
Monday
Mostly sunny and cold, with a high near 9.
Monday Night
Mostly cloudy, with a low around 0.
Tuesday
Partly sunny, with a high near 16.
Tuesday Night
Mostly cloudy, with a low around 1.
Wednesday
Partly sunny, with a high near 12.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
South Beloit IL
 42.5°N 89.05°W
2:21 pm CST Jan 22, 2026
2pm CST Jan 22, 2026-6pm CST Jan 28, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database