Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Great Lakes

Thunderstorms with strong wind gusts and hail will be possible today from Michigan into the Lower Great Lakes region. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Numerous daily record highs and warm lows are likely. Read More >

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair and Breezy

91°F

33°C

Humidity 59%
Wind Speed SW 23 G 33 mph
Barometer 29.74 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 21 Jun 5:45 pm CDT
Extended Forecast for

2 Miles N Sharon WI

Heat Advisory June 21, 06:33pm until June 23, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory June 21, 06:33pm until June 23, 07:00pm

    NOW until 7:00pm Mon

    Heat Advisory

  • Tonight

    Low: 77 °F

    Clear and
    Breezy then
    Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 93. Heat index values as high as 102. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 93 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 77. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 25 mph.

    Low: 77 °F

    Clear and
    Breezy then
    Clear

  • Monday

    Monday: Sunny and hot, with a high near 94. Heat index values as high as 100. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 94 °F

    Hot

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 72. Southwest wind 5 to 15 mph.

    Low: 72 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then a chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 88. West wind 5 to 10 mph.  Chance of precipitation is 50%.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 67. Northeast wind around 5 mph becoming south after midnight.

    Low: 67 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm.  Partly sunny, with a high near 88. West wind 5 to 10 mph.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 88 °F

    Showers
    Likely

Detailed Forecast

Tonight
Clear, with a low around 77. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 40 mph.
Sunday
Sunny and hot, with a high near 93. Heat index values as high as 102. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Clear, with a low around 77. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 25 mph.
Monday
Sunny and hot, with a high near 94. Heat index values as high as 100. Southwest wind around 15 mph, with gusts as high as 25 mph.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. Southwest wind 5 to 15 mph.
Tuesday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. West wind 5 to 10 mph. Chance of precipitation is 50%.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Northeast wind around 5 mph becoming south after midnight.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. West wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 70%.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Sharon WI
 42.53°N 88.72°W (Elev. 948 ft)
6:24 pm CDT Jun 21, 2025
6pm CDT Jun 21, 2025-6pm CDT Jun 28, 2025
 
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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