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

68°F

20°C

Humidity 100%
Wind Speed N 3 mph
Barometer 29.89 in (1010.9 mb)
Dewpoint 68°F (20°C)
Visibility 5.00 mi
Last update 13 Aug 1:51 am CDT
Extended Forecast for

Waukegan IL

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly cloudy, with a low around 66. North northeast wind around 5 mph.

    Low: 66 °F

    Patchy Fog

  • Thursday

    Thursday: A chance of showers and thunderstorms. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 76. East wind 5 to 10 mph. Chance of precipitation is 50%.

    High: 76 °F

    Patchy Fog
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 68. East wind around 10 mph.

    Low: 68 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers before 1pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 76. East wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 40%.

    High: 76 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. East northeast wind around 10 mph becoming southeast after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 60%.

    Low: 67 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 80. Chance of precipitation is 80%.

    High: 80 °F

    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.

    Low: 70 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 81.

    High: 81 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 66. North northeast wind around 5 mph.
Thursday
A chance of showers and thunderstorms. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 76. East wind 5 to 10 mph. Chance of precipitation is 50%.
Thursday Night
A 40 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 68. East wind around 10 mph.
Friday
A chance of showers before 1pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 76. East wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. East northeast wind around 10 mph becoming southeast after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 60%.
Saturday
Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 80. Chance of precipitation is 80%.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Sunday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 81.
Sunday Night
Mostly cloudy, with a low around 66.
Monday
Mostly sunny, with a high near 74.
Monday Night
Mostly clear, with a low around 62.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Partly cloudy, with a low around 64.
Wednesday
A chance of showers. Partly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Waukegan IL
 42.37°N 87.85°W
Last Update:
2:11 am CDT Aug 13, 2026
Forecast Valid:
2am CDT Aug 13, 2026-6pm CDT Aug 19, 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