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

61°F

16°C

Humidity 84%
Wind Speed SW 8 mph
Barometer 29.86 in (1010.6 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 12 Oct 4:51 am CDT
Extended Forecast for

Waukegan IL

  • Columbus Day

    Columbus Day: Mostly cloudy, then gradually becoming sunny, with a high near 84. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 84 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 69. Southwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 69 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 81. West wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Showers likely, mainly after 1am. Increasing clouds, with a low around 59. North northeast wind around 5 mph. Chance of precipitation is 70%.

    Low: 59 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday

    Wednesday: A 40 percent chance of showers. Mostly cloudy, with a high near 67. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 67 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 65. Chance of precipitation is 70%.

    High: 65 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers before 1am. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 57. Breezy.

    High: 57 °F

    Partly Sunny
    and Breezy

Detailed Forecast

Columbus Day
Mostly cloudy, then gradually becoming sunny, with a high near 84. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 69. Southwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 81. West wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Showers likely, mainly after 1am. Increasing clouds, with a low around 59. North northeast wind around 5 mph. Chance of precipitation is 70%.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 67. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 53.
Thursday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 65. Chance of precipitation is 70%.
Thursday Night
A chance of showers before 1am. Mostly cloudy, with a low around 46.
Friday
Partly sunny, with a high near 57. Breezy.
Friday Night
Partly cloudy, with a low around 37.
Saturday
Sunny, with a high near 56.
Saturday Night
Mostly clear, with a low around 39.
Sunday
Sunny, with a high near 61.
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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:
3:56 am CDT Oct 12, 2026
Forecast Valid:
5am CDT Oct 12, 2026-6pm CDT Oct 18, 2026
 
Forecast Discussion
 
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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