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

80°F

27°C

Humidity 56%
Wind Speed SW 15 mph
Barometer 29.82 in (1008.7 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 12 Oct 11:51 am CDT
Extended Forecast for

Waukegan IL

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 84. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 84 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 70. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 79. West wind 5 to 15 mph.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, then showers after 1am. Low around 59. North northeast wind around 5 mph. Chance of precipitation is 80%.

    Low: 59 °F

    Chance
    Showers then
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly before 7am. Cloudy, with a high near 64. North northeast wind 5 to 15 mph.

    High: 64 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers, then showers and possibly a thunderstorm after 1pm. High near 60. Chance of precipitation is 80%.

    High: 60 °F

    Chance
    Showers then
    Showers

  • Thursday Night

    Thursday Night: Showers likely before 1am. Mostly cloudy, with a low around 47. Breezy.

    Low: 47 °F

    Showers
    Likely and
    Breezy

  • Friday

    Friday: Partly sunny, with a high near 56. Breezy.

    High: 56 °F

    Partly Sunny
    and Breezy

Detailed Forecast

Columbus Day
Mostly sunny, with a high near 84. Southwest wind around 15 mph, with gusts as high as 25 mph.
Tonight
Partly cloudy, with a low around 70. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 79. West wind 5 to 15 mph.
Tuesday Night
Showers and thunderstorms likely, then showers after 1am. Low around 59. North northeast wind around 5 mph. Chance of precipitation is 80%.
Wednesday
A 30 percent chance of showers, mainly before 7am. Cloudy, with a high near 64. North northeast wind 5 to 15 mph.
Wednesday Night
Mostly cloudy, with a low around 57.
Thursday
A chance of showers, then showers and possibly a thunderstorm after 1pm. High near 60. Chance of precipitation is 80%.
Thursday Night
Showers likely before 1am. Mostly cloudy, with a low around 47. Breezy.
Friday
Partly sunny, with a high near 56. Breezy.
Friday Night
Partly cloudy, with a low around 40. Breezy.
Saturday
Sunny, with a high near 54.
Saturday Night
Mostly clear, with a low around 42.
Sunday
Sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waukegan IL
 42.34°N 87.85°W
Last Update:
12:17 pm CDT Oct 12, 2026
Forecast Valid:
12pm 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