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

62°F

17°C

Humidity 96%
Wind Speed Calm
Barometer 29.93 in (1012.7 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 14 Oct 2:51 am CDT
Extended Forecast for

Waukegan IL

  • Overnight

    Overnight: A 50 percent chance of showers and thunderstorms before 4am. Cloudy, with a low around 60. North northeast wind around 5 mph.

    Low: 60 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers between 10am and 1pm. Mostly cloudy, with a high near 61. North northeast wind 10 to 15 mph. Chance of precipitation is 20%.

    High: 61 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 56. North northeast wind 10 to 15 mph.

    Low: 56 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of rain, then rain and possibly a thunderstorm after 1pm. High near 58. East southeast wind 10 to 15 mph. Chance of precipitation is 100%.

    High: 58 °F

    Chance Rain
    then Rain

  • Thursday Night

    Thursday Night: Rain and possibly a thunderstorm before 1am, then a slight chance of rain. Low around 50. Light and variable wind becoming northwest 10 to 15 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 80%.

    Low: 50 °F

    Rain

  • Friday

    Friday: A 30 percent chance of rain, mainly before 1pm. Partly sunny, with a high near 55. Breezy.

    High: 55 °F

    Chance Rain
    and Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Overnight
A 50 percent chance of showers and thunderstorms before 4am. Cloudy, with a low around 60. North northeast wind around 5 mph.
Wednesday
A slight chance of showers between 10am and 1pm. Mostly cloudy, with a high near 61. North northeast wind 10 to 15 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 56. North northeast wind 10 to 15 mph.
Thursday
A chance of rain, then rain and possibly a thunderstorm after 1pm. High near 58. East southeast wind 10 to 15 mph. Chance of precipitation is 100%.
Thursday Night
Rain and possibly a thunderstorm before 1am, then a slight chance of rain. Low around 50. Light and variable wind becoming northwest 10 to 15 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 80%.
Friday
A 30 percent chance of rain, mainly before 1pm. Partly sunny, with a high near 55. Breezy.
Friday Night
Partly cloudy, with a low around 38.
Saturday
Sunny, with a high near 56.
Saturday Night
Mostly clear, with a low around 43.
Sunday
Sunny, with a high near 63.
Sunday Night
Partly cloudy, with a low around 48.
Monday
Partly sunny, with a high near 64.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
Sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waukegan IL
 42.37°N 87.85°W
Last Update:
2:41 am CDT Oct 14, 2026
Forecast Valid:
3am CDT Oct 14, 2026-6pm CDT Oct 20, 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