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

32°F

0°C

Humidity 69%
Wind Speed S 6 mph
Barometer 29.90 in (1014.1 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 26 Feb 10:51 am CST
Extended Forecast for

Waukegan IL

  • Today

    Today: Mostly sunny, with a high near 41. Southwest wind around 10 mph, with gusts as high as 15 mph.

    High: 41 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 30. West southwest wind around 10 mph, with gusts as high as 15 mph.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 60. Breezy, with a southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 60 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 29. West wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 20 mph.

    Low: 29 °F

    Partly Cloudy

  • Saturday

    Saturday: Snow likely, mainly after noon. Mostly cloudy, with a high near 33. North wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 33 °F

    Snow Likely

  • Saturday Night

    Saturday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 20.

    Low: 20 °F

    Chance Snow
    then Mostly
    Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 29.

    High: 29 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 21.

    Low: 21 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 33.

    High: 33 °F

    Mostly Cloudy

Detailed Forecast

Today
Mostly sunny, with a high near 41. Southwest wind around 10 mph, with gusts as high as 15 mph.
Tonight
Mostly clear, with a low around 30. West southwest wind around 10 mph, with gusts as high as 15 mph.
Friday
Sunny, with a high near 60. Breezy, with a southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph.
Friday Night
Partly cloudy, with a low around 29. West wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 20 mph.
Saturday
Snow likely, mainly after noon. Mostly cloudy, with a high near 33. North wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 20.
Sunday
Partly sunny, with a high near 29.
Sunday Night
Mostly cloudy, with a low around 21.
Monday
Mostly cloudy, with a high near 33.
Monday Night
Mostly cloudy, with a low around 25.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 41.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
Mostly cloudy, with a high near 43.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waukegan IL
 42.37°N 87.85°W
Last Update:
11:31 am CST Feb 26, 2026
Forecast Valid:
11am CST Feb 26, 2026-6pm CST Mar 4, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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