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

Fire Weather Concerns in the Northern and Central Plains; Severe Thunderstorms in the Upper Midwest

Dry and breezy conditions will bring elevated to critical fire weather conditions across portions of the northern and central High Plains through Saturday, where fuels remain largely receptive. Severe thunderstorms are possible across portions of central Nebraska to the Upper Midwest this afternoon into tonight. Read More >

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

64°F

18°C

Humidity 78%
Wind Speed Calm
Barometer 30.04 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 11 Sep 8:45 am CDT
Extended Forecast for

South Beloit IL

  • Today

    Today: Sunny, with a high near 79. South wind 5 to 10 mph.

    High: 79 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 60. South wind around 5 mph, with gusts as high as 15 mph.

    Low: 60 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 82. South wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 54. North wind around 5 mph, with gusts as high as 10 mph.

    Low: 54 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 74. North wind around 5 mph, with gusts as high as 10 mph.

    High: 74 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Chance
    Showers

  • Monday

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

    High: 78 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. Breezy.

    Low: 63 °F

    Showers
    Likely and
    Breezy

  • Tuesday

    Tuesday: A chance of showers. Mostly cloudy, with a high near 76.

    High: 76 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 79. South wind 5 to 10 mph.
Tonight
Increasing clouds, with a low around 60. South wind around 5 mph, with gusts as high as 15 mph.
Saturday
Mostly sunny, with a high near 82. South wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 54. North wind around 5 mph, with gusts as high as 10 mph.
Sunday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 74. North wind around 5 mph, with gusts as high as 10 mph.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 53.
Monday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Mostly cloudy, with a high near 78. Chance of precipitation is 60%.
Monday Night
A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. Breezy.
Tuesday
A chance of showers. Mostly cloudy, with a high near 76.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 54.
Wednesday
A chance of showers. Mostly cloudy, with a high near 73.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 57.
Thursday
A chance of showers. Partly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Beloit IL
 42.5°N 89.05°W
Last Update:
3:10 am CDT Sep 11, 2026
Forecast Valid:
9am CDT Sep 11, 2026-6pm CDT Sep 17, 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