Severe Thunderstorms and Heavy Rain Across the Central US and Central Appalachians

Severe thunderstorms producing damaging winds, hail and possibly a few tornadoes are expected across parts of the central Plains and the Missouri Valley. Heavy rainfall and flash flooding is also expected in the area. Thunderstorms and heavy rain may also bring additional flooding impacts to the central Appalachians. High temperatures and critical fire weather conditions expected in the Southwest. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

A Few Clouds

84°F

29°C

Humidity 61%
Wind Speed SW 13 mph
Barometer 29.79 in (1007.5 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 17 Jun 9:51 am CDT
Extended Forecast for

Winthrop Harbor IL

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 4pm.  Partly sunny, with a high near 89. Southwest wind around 10 mph, with gusts as high as 15 mph.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly between 7pm and 10pm.  Mostly cloudy, with a low around 65. Southwest wind 5 to 10 mph becoming light and variable  in the evening.  Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 65 °F

    T-storms
    Likely

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm.  High near 74. South southeast wind 5 to 10 mph, with gusts as high as 15 mph.  Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 74 °F

    Showers
    Likely then
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am.  Mostly cloudy, with a low around 60. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 60 °F

    Chance
    T-storms then
    Chance
    Showers

  • Juneteenth

    Juneteenth: Sunny, with a high near 81. West wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 1am.  Mostly clear, with a low around 64.

    Low: 64 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 89. Southwest wind around 10 mph, with gusts as high as 15 mph.
Tonight
Showers and thunderstorms likely, mainly between 7pm and 10pm. Mostly cloudy, with a low around 65. Southwest wind 5 to 10 mph becoming light and variable in the evening. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Showers and possibly a thunderstorm. High near 74. South southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 60. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Juneteenth
Sunny, with a high near 81. West wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 64.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Saturday
Mostly sunny, with a high near 91.
Saturday Night
Mostly clear, with a low around 72.
Sunday
Sunny, with a high near 92.
Sunday Night
Mostly clear, with a low around 73.
Monday
Sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Winthrop Harbor IL
 42.47°N 87.84°W
8:56 am CDT Jun 17, 2025
10am CDT Jun 17, 2025-6pm CDT Jun 23, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database