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.

Fair

42°F

6°C

Humidity 76%
Wind Speed NE 6 mph
Barometer 29.93 in (1013.9 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 20 Mar 7:51 pm CDT
Extended Forecast for

Chicago / Waukegan, Waukegan Regional Airport IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 36. East wind around 5 mph, with gusts as high as 10 mph.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 66. East wind 5 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 25 mph.

    High: 66 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 43. Southwest wind 5 to 15 mph becoming north after midnight.

    Low: 43 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of rain. Mostly cloudy, with a high near 45. North wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 45 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 30. North wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 30 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 52.

    High: 52 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 36. East wind around 5 mph, with gusts as high as 10 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 66. East wind 5 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Partly cloudy, with a low around 43. Southwest wind 5 to 15 mph becoming north after midnight.
Sunday
A 20 percent chance of rain. Mostly cloudy, with a high near 45. North wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 30. North wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 41.
Monday Night
Partly cloudy, with a low around 32.
Tuesday
Mostly cloudy, with a high near 52.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Mostly cloudy, with a high near 43.
Wednesday Night
Mostly cloudy, with a low around 39.
Thursday
A chance of showers. Mostly cloudy, with a high near 62.
Thursday Night
Mostly cloudy, with a low around 29.
Friday
Partly sunny, with a high near 41.
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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:
7:56 pm CDT Mar 20, 2026
Forecast Valid:
8pm CDT Mar 20, 2026-6pm CDT Mar 27, 2026
 
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Additional Resources

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Chance of Precipitation