Severe Thunderstorms and Heavy Rain in the Central US

Isolated to scattered strong to severe thunderstorms may produce damaging winds and hail in the upper Great Lakes into the central High Plains. Heavy rain may create localized areas of flash flooding over parts of the Central Plains and Middle Mississippi Valley. Showers and strong to severe thunderstorms are possible over parts of the Mid-Atlantic. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Partly Cloudy

90°F

32°C

Humidity 55%
Wind Speed S 10 mph
Barometer 29.93 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 29 Jun 2:45 pm CDT
Extended Forecast for

Alden IL

  • This Afternoon

    This Afternoon: Scattered showers and thunderstorms, mainly between 4pm and 5pm.  Mostly sunny, with a high near 90. Heat index values as high as 96. South southwest wind around 10 mph.  Chance of precipitation is 30%.

    High: 90 °F

    Scattered
    T-storms

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly between 9pm and 2am.  Mostly cloudy, with a low around 69. South southwest wind around 5 mph.  Chance of precipitation is 50%.

    Low: 69 °F

    Scattered
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 10am, then a chance of showers and thunderstorms after 10am.  Partly sunny, with a high near 85. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.  Chance of precipitation is 50%.

    High: 85 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am.  Partly cloudy, with a low around 63. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.  Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 82. Northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms, mainly between 4pm and 5pm. Mostly sunny, with a high near 90. Heat index values as high as 96. South southwest wind around 10 mph. Chance of precipitation is 30%.
Tonight
Scattered showers and thunderstorms, mainly between 9pm and 2am. Mostly cloudy, with a low around 69. South southwest wind around 5 mph. Chance of precipitation is 50%.
Monday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 10am, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 85. Northwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 63. West northwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 82. Northwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
Sunny, with a high near 85.
Wednesday Night
Partly cloudy, with a low around 65.
Thursday
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 65.
Independence Day
Mostly sunny, with a high near 88.
Friday Night
Partly cloudy, with a low around 71.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
Alden IL
 42.46°N 88.52°W
2:11 pm CDT Jun 29, 2025
2pm CDT Jun 29, 2025-6pm CDT Jul 5, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database