Heavy Rain in the Appalachians and Central Gulf Coast; Heat Continues in the West; Monitoring the Tropics

Heavy to excessive rainfall over the southern Appalachians and portions of the central Gulf Coast may bring areas of flooding today. Hot temperatures are in place through today across much of the western U.S. and New England. Tropical Storm Erin is forecast to become a Major Hurricane this weekend as it moves across the central Atlantic Ocean. Monitor future forecasts for any East Coast impacts. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

A Few Clouds

79°F

26°C

Humidity 74%
Wind Speed SE 8 mph
Barometer 29.93 in (1012.2 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 12 Aug 12:51 pm CDT
Extended Forecast for

Chicago / Waukegan, Waukegan Regional Airport IL

  • This Afternoon

    This Afternoon: Showers and thunderstorms likely, mainly after 4pm.  Mostly cloudy, with a high near 82. South southwest wind around 10 mph, with gusts as high as 15 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 10pm.  Mostly cloudy, with a low around 66. Southwest wind around 5 mph becoming northwest after midnight. Winds could gust as high as 15 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    T-storms
    Likely then
    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Sunny, with a high near 78. North northwest wind around 5 mph becoming northeast in the afternoon. Winds could gust as high as 10 mph.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 65. Northeast wind around 5 mph.

    Low: 65 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 77. East northeast wind around 5 mph.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, mainly after 4pm. Mostly cloudy, with a high near 82. South southwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly before 10pm. Mostly cloudy, with a low around 66. Southwest wind around 5 mph becoming northwest after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Sunny, with a high near 78. North northwest wind around 5 mph becoming northeast in the afternoon. Winds could gust as high as 10 mph.
Wednesday Night
Mostly clear, with a low around 65. Northeast wind around 5 mph.
Thursday
Sunny, with a high near 77. East northeast wind around 5 mph.
Thursday Night
Mostly clear, with a low around 66.
Friday
Sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 72.
Saturday
Mostly sunny, with a high near 91.
Saturday Night
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73.
Sunday
Mostly sunny, with a high near 81.
Sunday Night
Mostly cloudy, with a low around 70.
Monday
A chance of showers. Partly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
Chicago / Waukegan, Waukegan Regional Airport IL
 42.41°N 87.84°W
12:41 pm CDT Aug 12, 2025
1pm CDT Aug 12, 2025-6pm CDT Aug 18, 2025
 
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Additional Resources

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