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 60%
Wind Speed W 9 mph
Barometer 30.02 in (1017.5 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 12 Jan 3:51 pm CST
Extended Forecast for

Waukegan IL

  • Tonight

    Tonight: Increasing clouds, with a low around 35. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 35 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 49. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 49 °F

    Decreasing
    Clouds and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 25. West wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 25 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of snow showers, mainly before noon. Mostly cloudy, with a high near 27. Blustery, with a north northwest wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 27 °F

    Chance Snow
    Showers and
    Blustery

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 13. Blustery, with a north northwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 13 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 26.

    High: 26 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 20.

    Low: 20 °F

    Chance Snow

  • Friday

    Friday: Snow likely, mainly after noon. Cloudy, with a high near 32.

    High: 32 °F

    Snow Likely

  • Friday Night

    Friday Night: A chance of snow. Mostly cloudy, with a low around 16.

    Low: 16 °F

    Chance Snow

Detailed Forecast

Tonight
Increasing clouds, with a low around 35. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 49. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly cloudy, with a low around 25. West wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
A 50 percent chance of snow showers, mainly before noon. Mostly cloudy, with a high near 27. Blustery, with a north northwest wind 15 to 25 mph, with gusts as high as 35 mph.
Wednesday Night
Partly cloudy, with a low around 13. Blustery, with a north northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Thursday
Mostly sunny, with a high near 26.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 20.
Friday
Snow likely, mainly after noon. Cloudy, with a high near 32.
Friday Night
A chance of snow. Mostly cloudy, with a low around 16.
Saturday
A chance of snow. Mostly cloudy, with a high near 20.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 7.
Sunday
Mostly cloudy, with a high near 17.
Sunday Night
Mostly cloudy, with a low around 7.
M.L.King Day
Partly sunny, with a high near 19.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Waukegan IL
 42.37°N 87.88°W
Last Update:
3:11 pm CST Jan 12, 2026
Forecast Valid:
4pm CST Jan 12, 2026-6pm CST Jan 19, 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