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.

Fog/Mist

67°F

19°C

Humidity 91%
Wind Speed W 3 mph
Barometer 30.08 in (1017.3 mb)
Dewpoint 64°F (18°C)
Visibility 4.00 mi
Last update 15 Jul 2:51 am CDT
Extended Forecast for

Waukegan IL

  • Overnight

    Overnight: Mostly clear, with a low around 67. South southwest wind around 5 mph becoming calm.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83. Light and variable wind becoming east southeast 5 to 10 mph in the morning.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 72. East southeast wind around 5 mph becoming calm in the evening.

    Low: 72 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Heat index values as high as 98. Light south southwest wind becoming south 5 to 10 mph in the morning.

    High: 88 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 66. South wind around 5 mph becoming west after midnight. Winds could gust as high as 10 mph. Chance of precipitation is 60%.

    Low: 66 °F

    T-storms
    Likely

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 73.

    High: 73 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Friday Night

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

    Low: 65 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 67. South southwest wind around 5 mph becoming calm.
Tuesday
Sunny, with a high near 83. Light and variable wind becoming east southeast 5 to 10 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 72. East southeast wind around 5 mph becoming calm in the evening.
Wednesday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Heat index values as high as 98. Light south southwest wind becoming south 5 to 10 mph in the morning.
Wednesday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 66. South wind around 5 mph becoming west after midnight. Winds could gust as high as 10 mph. Chance of precipitation is 60%.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 73.
Thursday Night
Mostly cloudy, with a low around 61.
Friday
Mostly sunny, with a high near 74.
Friday Night
Partly cloudy, with a low around 65.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Sunday
A chance of showers. Partly sunny, with a high near 79.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 67.
Monday
Partly sunny, with a high near 80.
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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:
2:41 am CDT Jul 15, 2025
Forecast Valid:
3am CDT Jul 15, 2025-6pm CDT Jul 21, 2025
 
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