Tracking Two Storms Impacting the Central and Eastern U.S. Through This Weekend

Two storm systems will track through the central and eastern U.S. through this weekend with areas of gusty winds, rain, and heavy snow. Severe thunderstorms are forecast Friday from the central Gulf Coast into parts of the lower Mississippi, Tennessee and Ohio Valleys. Heavy to excessive rainfall is forecast from the lower Mississippi River Valley to the Tennessee Valley which may bring flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair and Breezy

-36°F

-38°C

Humidity 81%
Wind Speed SW 23 G 28 mph
Barometer 29.29 in
Dewpoint -40°F (-40°C)
Visibility 10.00 mi
Wind Chill-71°F (-57°C)
Last update 8 Jan 11:50 pm CST
Extended Forecast for

South Beloit IL

  • Overnight

    Overnight: A chance of rain, mainly before 1am, then a slight chance of showers after 3am.  Mostly cloudy, with a low around 39. Windy, with a south southwest wind 25 to 30 mph becoming west northwest. Winds could gust as high as 40 mph.  Chance of precipitation is 30%.

    Low: 39 °F

    Chance Rain
    and Windy

  • Friday

    Friday: A 30 percent chance of showers, mainly before 9am.  Cloudy, then gradually becoming mostly sunny, with a high near 43. Breezy, with a northwest wind 15 to 20 mph decreasing to 5 to 10 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 43 °F

    Chance
    Showers and
    Breezy then
    Mostly Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 29. North northwest wind around 5 mph becoming calm  in the evening.

    Low: 29 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 50 percent chance of snow.  Mostly cloudy, with a high near 34. Breezy, with a west northwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 34 °F

    Chance Snow
    and Breezy

  • Saturday Night

    Saturday Night: A 30 percent chance of snow.  Mostly cloudy, with a low around 19. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 19 °F

    Chance Snow
    and Blustery

  • Sunday

    Sunday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of rain, mainly before 1am, then a slight chance of showers after 3am. Mostly cloudy, with a low around 39. Windy, with a south southwest wind 25 to 30 mph becoming west northwest. Winds could gust as high as 40 mph. Chance of precipitation is 30%.
Friday
A 30 percent chance of showers, mainly before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 43. Breezy, with a northwest wind 15 to 20 mph decreasing to 5 to 10 mph in the afternoon. Winds could gust as high as 35 mph.
Friday Night
Increasing clouds, with a low around 29. North northwest wind around 5 mph becoming calm in the evening.
Saturday
A 50 percent chance of snow. Mostly cloudy, with a high near 34. Breezy, with a west northwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 19. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday
Mostly sunny, with a high near 30.
Sunday Night
Partly cloudy, with a low around 21.
Monday
Mostly sunny, with a high near 38.
Monday Night
Mostly cloudy, with a low around 30.
Tuesday
A chance of rain after noon. Mostly cloudy, with a high near 41.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 27.
Wednesday
Mostly cloudy, with a high near 31.
Wednesday Night
Mostly cloudy, with a low around 17.
Thursday
Partly sunny, with a high near 27.
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ABOUT THIS FORECAST

 
Point Forecast:
South Beloit IL
 42.5°N 89.05°W
12:11 am CST Jan 9, 2026
12am CST Jan 9, 2026-6pm CST Jan 15, 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