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

Areas of Severe Thunderstorms and Heavy Rain Possible through the Weekend

There will be daily chances for scattered thunderstorms across portions of the Central and Eastern U.S. through the weekend, with severe thunderstorms possible in the northern Plains and Upper Midwest. Potential severe storm hazards may include large hail, damaging winds, and a few tornadoes. Storms could also produce heavy rain that may lead to isolated instances of flash flooding. Read More >

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Partly Cloudy

84°F

29°C

Humidity 58%
Wind Speed SW 7 mph
Barometer 30.00 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 28 Jun 4:45 pm CDT
Extended Forecast for

4 Miles SE Shirland IL

  • Tonight

    Tonight: Mostly clear, with a low around 71. South southeast wind around 5 mph, with gusts as high as 10 mph.

    Low: 71 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. Heat index values as high as 100. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 91 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South southwest wind 5 to 10 mph.

    Low: 70 °F

    Chance
    T-storms

  • Monday

    Monday: Scattered showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 83. West northwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 50%.

    High: 83 °F

    Scattered
    Showers then
    Scattered
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 62. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 71. South southeast wind around 5 mph, with gusts as high as 10 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. Heat index values as high as 100. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South southwest wind 5 to 10 mph.
Monday
Scattered showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 83. West northwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 50%.
Monday Night
Mostly clear, with a low around 62. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
Mostly sunny, with a high near 85.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 64.
Independence Day
Mostly sunny, with a high near 88.
Friday Night
A chance of showers. Partly cloudy, with a low around 70.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Shirland IL
 42.41°N 89.14°W
Last Update:
4:42 pm CDT Jun 28, 2025
Forecast Valid:
4pm CDT Jun 28, 2025-6pm CDT Jul 5, 2025
 
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