Fire Weather Concerns and Severe Weather

Dry and breezy conditions will bring elevated to critical fire weather conditions across portions of the northern and central High Plains through this weekend, where fuels remain largely receptive. Severe thunderstorms and heavy rainfall are possible from the Plains into the Upper Midwest, as well as in the Ohio Valley and portions of the Mid-Atlantic through this weekend. Read More >

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

75°F

24°C

Humidity 78%
Wind Speed SW 12 mph
Barometer 29.85 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 12 Sep 9:45 am CDT
Extended Forecast for

South Beloit IL

  • Today

    Today: Mostly sunny, with a high near 82. Southwest wind around 10 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 54. North northwest wind around 5 mph.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: A chance of showers between noon and 4pm.  Increasing clouds, with a high near 69. Light north wind increasing to 5 to 10 mph in the morning.  Chance of precipitation is 40%.

    High: 69 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 46. North northwest wind around 5 mph becoming calm  in the evening.

    Low: 46 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers.  Partly sunny, with a high near 72. Light east wind becoming southeast 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

    High: 72 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 63. Chance of precipitation is 60%.

    Low: 63 °F

    Mostly Cloudy
    then Showers
    Likely

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm.  Mostly cloudy, with a high near 78. Chance of precipitation is 60%.

    High: 78 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely, mainly after 1am.  Cloudy, with a low around 57.

    Low: 57 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers.  Cloudy, with a high near 73.

    High: 73 °F

    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 82. Southwest wind around 10 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.
Tonight
Mostly clear, with a low around 54. North northwest wind around 5 mph.
Sunday
A chance of showers between noon and 4pm. Increasing clouds, with a high near 69. Light north wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 40%.
Sunday Night
Partly cloudy, with a low around 46. North northwest wind around 5 mph becoming calm in the evening.
Monday
A 20 percent chance of showers. Partly sunny, with a high near 72. Light east wind becoming southeast 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Monday Night
Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 78. Chance of precipitation is 60%.
Tuesday Night
Showers likely, mainly after 1am. Cloudy, with a low around 57.
Wednesday
Showers. Cloudy, with a high near 73.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 58.
Thursday
A chance of showers. Mostly cloudy, with a high near 75.
Thursday Night
Partly cloudy, with a low around 54.
Friday
Mostly sunny, with a high near 75.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
South Beloit IL
 42.5°N 89.05°W
8:11 am CDT Sep 12, 2026
10am CDT Sep 12, 2026-6pm CDT Sep 18, 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