National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Overcast

65°F

18°C

Humidity 97%
Wind Speed Calm
Barometer 29.95 in (1013.6 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 5 Jul 4:51 am CDT
Extended Forecast for

Waukegan IL

  • Overnight

    Overnight: A 40 percent chance of showers and thunderstorms. Areas of fog. Otherwise, mostly cloudy, with a low around 62. North wind around 5 mph.

    Low: 62 °F

    Chance
    Showers and
    Areas Fog

  • Sunday

    Sunday: A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 1pm. Areas of fog before 7am. Otherwise, mostly cloudy, with a high near 73. North northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 73 °F

    Chance
    Showers and
    Areas Fog

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 64. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 64 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 74. North northeast wind around 10 mph, with gusts as high as 15 mph.

    High: 74 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61. North wind 5 to 10 mph.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms

Detailed Forecast

Overnight
A 40 percent chance of showers and thunderstorms. Areas of fog. Otherwise, mostly cloudy, with a low around 62. North wind around 5 mph.
Sunday
A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 1pm. Areas of fog before 7am. Otherwise, mostly cloudy, with a high near 73. North northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 64. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Monday
Sunny, with a high near 74. North northeast wind around 10 mph, with gusts as high as 15 mph.
Monday Night
Mostly clear, with a low around 61. North wind 5 to 10 mph.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
Mostly sunny, with a high near 87.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 82.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 63.
Friday
Partly sunny, with a high near 78.
Friday Night
Partly cloudy, with a low around 63.
Saturday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waukegan IL
 42.37°N 87.85°W
Last Update:
3:16 am CDT Jul 5, 2026
Forecast Valid:
5am CDT Jul 5, 2026-6pm CDT Jul 11, 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