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.

Mostly Cloudy

50°F

10°C

Humidity 82%
Wind Speed Vrbl 5 mph
Barometer 30.12 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 9 Oct 6:45 am CDT
Extended Forecast for

South Beloit IL

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly between noon and 5pm. Mostly cloudy, with a high near 69. Light southeast wind becoming south southeast 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

    High: 69 °F

    Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 56. East southeast wind around 10 mph, with gusts as high as 15 mph.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 79. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 79 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 54. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 54 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 75. Calm wind becoming south southeast around 5 mph.

    High: 75 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 57.

    Low: 57 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly between noon and 5pm. Mostly cloudy, with a high near 69. Light southeast wind becoming south southeast 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Tonight
Mostly clear, with a low around 56. East southeast wind around 10 mph, with gusts as high as 15 mph.
Saturday
Increasing clouds, with a high near 79. South wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 54. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 75. Calm wind becoming south southeast around 5 mph.
Sunday Night
Partly cloudy, with a low around 56.
Columbus Day
Mostly sunny, with a high near 79.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 57.
Tuesday
Mostly sunny, with a high near 70.
Tuesday Night
Partly cloudy, with a low around 49.
Wednesday
A chance of showers. Partly sunny, with a high near 66.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 51.
Thursday
A chance of showers. Partly sunny, with a high near 69.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Beloit IL
 42.49°N 89.02°W
Last Update:
5:26 am CDT Oct 9, 2026
Forecast Valid:
7am CDT Oct 9, 2026-6pm CDT Oct 15, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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