National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Mostly Cloudy

32°F

0°C

Humidity 51%
Wind Speed S 14 mph
Barometer 30.33 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 24 Mar 6:45 am CDT
Extended Forecast for

3 Miles ESE South Beloit IL

  • Today

    Today: Mostly cloudy, with a high near 52. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 52 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 36. South southeast wind around 5 mph.

    Low: 36 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 67. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 67 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 49. South wind 5 to 10 mph.

    Low: 49 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 69. South southwest wind 5 to 15 mph becoming north northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 69 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of rain showers, possibly mixing with snow after 10pm, then gradually ending. Some thunder is also possible. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.

    Low: 28 °F

    Chance
    Rain/Snow

  • Friday

    Friday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 52. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around 36. South southeast wind around 5 mph.
Wednesday
Partly sunny, with a high near 67. South wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 49. South wind 5 to 10 mph.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 69. South southwest wind 5 to 15 mph becoming north northwest in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
A chance of rain showers, possibly mixing with snow after 10pm, then gradually ending. Some thunder is also possible. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 44.
Friday Night
Mostly clear, with a low around 24.
Saturday
Sunny, with a high near 52.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
Partly sunny, with a high near 57.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Mostly sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE South Beloit IL
 42.47°N 88.99°W
Last Update:
6:36 am CDT Mar 24, 2026
Forecast Valid:
7am CDT Mar 24, 2026-6pm CDT Mar 30, 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