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

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Overcast

29°F

-2°C

Humidity 75%
Wind Speed SW 15 mph
Barometer 30.01 in (1017.7 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 18 Mar 10:51 am CDT
Extended Forecast for

Chicago / Waukegan, Waukegan Regional Airport IL

  • Today

    Today: Mostly cloudy, with a high near 38. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 38 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 3am. Mostly cloudy, with a low around 32. Southwest wind around 5 mph becoming calm in the evening.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers, mainly before 8am. Partly sunny, with a high near 41. North northwest wind around 5 mph becoming southeast in the afternoon.

    High: 41 °F

    Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 35. East northeast wind around 5 mph becoming calm. Winds could gust as high as 10 mph.

    Low: 35 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 57. West southwest wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 15 mph.

    High: 57 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 46.

    High: 46 °F

    Mostly Cloudy

Detailed Forecast

Today
Mostly cloudy, with a high near 38. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
A 30 percent chance of showers, mainly after 3am. Mostly cloudy, with a low around 32. Southwest wind around 5 mph becoming calm in the evening.
Thursday
A 30 percent chance of showers, mainly before 8am. Partly sunny, with a high near 41. North northwest wind around 5 mph becoming southeast in the afternoon.
Thursday Night
Mostly cloudy, with a low around 35. East northeast wind around 5 mph becoming calm. Winds could gust as high as 10 mph.
Friday
Mostly cloudy, with a high near 57. West southwest wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 15 mph.
Friday Night
Mostly cloudy, with a low around 37.
Saturday
Partly sunny, with a high near 61.
Saturday Night
Mostly cloudy, with a low around 40.
Sunday
Mostly cloudy, with a high near 46.
Sunday Night
Partly cloudy, with a low around 28.
Monday
Partly sunny, with a high near 39.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Partly sunny, with a high near 49.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chicago / Waukegan, Waukegan Regional Airport IL
 42.41°N 87.87°W
Last Update:
11:16 am CDT Mar 18, 2026
Forecast Valid:
11am CDT Mar 18, 2026-6pm CDT Mar 24, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation