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.

Overcast

54°F

12°C

Humidity 77%
Wind Speed NE 9 mph
Barometer 30.00 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 25 Apr 9:45 am CDT
Extended Forecast for

South Beloit IL

Flood Warning until further notice
Click here for hazard details and duration
Flood Warning until further notice
  •  
    Flood Warning until further notice

    NOW until further notice

    Flood Warning

  • Today

    High: 68 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 43. East wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 43 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 68. East southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 68 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 51. East southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 51 °F

    Mostly Cloudy

  • Monday

    Monday: Showers and thunderstorms, mainly after 1pm. Some of the storms could be severe and produce heavy rainfall. High near 70. Breezy, with a south southeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.

    High: 70 °F

    Breezy.
    Chance
    T-storms then
    Severe
    Thunderstorms

  • Monday Night

    Monday Night: Showers and thunderstorms before 1am, then a slight chance of showers. Some of the storms could be severe and produce heavy rainfall. Low around 48. Chance of precipitation is 80%.

    Low: 48 °F

    Severe
    Thunderstorms

  • Tuesday

    Tuesday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

Detailed Forecast

Today
Sunny, with a high near 68. East northeast wind around 10 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around 43. East wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 68. East southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Mostly cloudy, with a low around 51. East southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Monday
Showers and thunderstorms, mainly after 1pm. Some of the storms could be severe and produce heavy rainfall. High near 70. Breezy, with a south southeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.
Monday Night
Showers and thunderstorms before 1am, then a slight chance of showers. Some of the storms could be severe and produce heavy rainfall. Low around 48. Chance of precipitation is 80%.
Tuesday
Partly sunny, with a high near 60.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
Mostly sunny, with a high near 60.
Wednesday Night
Partly cloudy, with a low around 39.
Thursday
Mostly sunny, with a high near 59.
Thursday Night
Mostly cloudy, with a low around 38.
Friday
Partly sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Beloit IL
 42.5°N 89.05°W
Last Update:
8:51 am CDT Apr 25, 2026
Forecast Valid:
10am CDT Apr 25, 2026-6pm CDT May 1, 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