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

74°F

23°C

Humidity 100%
Wind Speed SW 7 mph
Barometer 29.94 in (1012.6 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Last update 16 Aug 6:51 am CDT
Extended Forecast for

Waukegan IL

  • Today

    Today: A slight chance of showers before 9am, then a slight chance of showers after 3pm. Mostly cloudy, with a high near 83. West northwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 83 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 67. Northwest wind around 10 mph becoming north northeast after midnight. Winds could gust as high as 15 mph.

    Low: 67 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 77. Northeast wind 5 to 10 mph.

    High: 77 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 64. South southwest wind around 5 mph.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 82. West southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    High: 82 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.

    Low: 64 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 74.

    High: 74 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of showers before 9am, then a slight chance of showers after 3pm. Mostly cloudy, with a high near 83. West northwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 67. Northwest wind around 10 mph becoming north northeast after midnight. Winds could gust as high as 15 mph.
Monday
Mostly sunny, with a high near 77. Northeast wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 64. South southwest wind around 5 mph.
Tuesday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 82. West southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 74.
Wednesday Night
Partly cloudy, with a low around 61.
Thursday
Mostly sunny, with a high near 74.
Thursday Night
Partly cloudy, with a low around 62.
Friday
Mostly sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 63.
Saturday
Mostly sunny, with a high near 77.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waukegan IL
 42.37°N 87.85°W
Last Update:
6:06 am CDT Aug 16, 2026
Forecast Valid:
7am CDT Aug 16, 2026-6pm CDT Aug 22, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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