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

Severe Thunderstorms and Heavy Rainfall Today from the Central Plains into the Tennessee Valley

Severe thunderstorms capable of damaging winds will be possible from the Ozark Plateau east into portions of the Southeast today. Rounds of heavy thunderstorms ahead of a slow moving front will continue locally heavy rainfall and scattered flash flooding potential from the Ozarks to the Ohio and Tennessee Valleys today. Read More >

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

66°F

19°C

Humidity 87%
Wind Speed Calm
Barometer 30.15 in (1020.1 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 12 Jul 3:51 am CDT
Extended Forecast for

Waukegan IL

  • Today

    Today: Sunny, with a high near 78. Calm wind becoming east northeast around 5 mph in the morning.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 66. East wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 84. West wind around 5 mph becoming east in the afternoon.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 72. South southeast wind around 5 mph becoming west after midnight.

    Low: 72 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94. West northwest wind around 5 mph becoming south southwest in the afternoon. Winds could gust as high as 10 mph.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 78. Calm wind becoming east northeast around 5 mph in the morning.
Tonight
Mostly clear, with a low around 66. East wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 84. West wind around 5 mph becoming east in the afternoon.
Monday Night
Clear, with a low around 72. South southeast wind around 5 mph becoming west after midnight.
Tuesday
Sunny, with a high near 94. West northwest wind around 5 mph becoming south southwest in the afternoon. Winds could gust as high as 10 mph.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 69.
Thursday
Sunny, with a high near 86.
Thursday Night
Partly cloudy, with a low around 70.
Friday
Mostly sunny, with a high near 86.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Saturday
Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waukegan IL
 42.37°N 87.85°W
Last Update:
3:31 am CDT Jul 12, 2026
Forecast Valid:
4am CDT Jul 12, 2026-6pm CDT Jul 18, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation