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

52°F

11°C

Humidity 67%
Wind Speed W 6 mph
Barometer 30.01 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 9 Apr 2:50 am CDT
Extended Forecast for

South Beloit IL

  • Overnight

    Overnight: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 47. West southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 47 °F

    Chance
    Showers

  • Thursday

    Thursday: Increasing clouds, with a high near 64. West wind around 10 mph, with gusts as high as 15 mph.

    High: 64 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, then showers after 9pm. Low around 43. West wind 5 to 10 mph becoming northeast in the evening. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 43 °F

    Showers

  • Friday

    Friday: Showers likely, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 57. North northwest wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 57 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 34. North wind around 5 mph becoming calm in the evening.

    Low: 34 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 49. Chance of precipitation is 50%.

    Low: 49 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers after 1pm. Mostly cloudy, with a high near 72. Breezy.

    High: 72 °F

    Mostly Cloudy
    then Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 61.

    Low: 61 °F

    Showers
    Likely

Detailed Forecast

Overnight
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 47. West southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Thursday
Increasing clouds, with a high near 64. West wind around 10 mph, with gusts as high as 15 mph.
Thursday Night
Showers and thunderstorms likely, then showers after 9pm. Low around 43. West wind 5 to 10 mph becoming northeast in the evening. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
Showers likely, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 57. North northwest wind 5 to 10 mph. Chance of precipitation is 60%.
Friday Night
Mostly clear, with a low around 34. North wind around 5 mph becoming calm in the evening.
Saturday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 58.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 49. Chance of precipitation is 50%.
Sunday
A chance of showers after 1pm. Mostly cloudy, with a high near 72. Breezy.
Sunday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 61.
Monday
A chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 77.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63.
Tuesday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 74.
Tuesday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 48.
Wednesday
A chance of showers. Mostly cloudy, with a high near 63.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Beloit IL
 42.5°N 89.05°W
Last Update:
1:46 am CDT Apr 9, 2026
Forecast Valid:
3am CDT Apr 9, 2026-6pm CDT Apr 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