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

36°F

2°C

Humidity 67%
Wind Speed SW 10 mph
Barometer 29.86 in (1012.2 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 9 Feb 10:51 pm CST
Extended Forecast for

Waukegan IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 34. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 34 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 39. Breezy, with a west northwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 39 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 25. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 25 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 34. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 34 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 22. Northwest wind around 5 mph becoming calm in the evening.

    Low: 22 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 35.

    High: 35 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 34. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 39. Breezy, with a west northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
Partly cloudy, with a low around 25. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 34. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday Night
Partly cloudy, with a low around 22. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Mostly cloudy, with a high near 35.
Thursday Night
Partly cloudy, with a low around 26.
Friday
Mostly sunny, with a high near 38.
Friday Night
Partly cloudy, with a low around 28.
Saturday
Mostly cloudy, with a high near 39.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 31.
Sunday
A chance of rain and snow. Mostly sunny, with a high near 38.
Sunday Night
Partly cloudy, with a low around 30.
Washington's Birthday
Mostly cloudy, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waukegan IL
 42.37°N 87.85°W
Last Update:
9:16 pm CST Feb 9, 2026
Forecast Valid:
11pm CST Feb 9, 2026-6pm CST Feb 16, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation