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.

Fair

61°F

16°C

Humidity 87%
Wind Speed SE 6 mph
Barometer 30.04 in (1016.8 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 24 May 7:51 pm CDT
Extended Forecast for

Great Lakes IL

  • Tonight

    Tonight: Patchy fog. Otherwise, partly cloudy, with a low around 53. Southeast wind around 5 mph becoming calm.

    Low: 53 °F

    Patchy Fog

  • Memorial Day

    Memorial Day: Patchy fog before 9am. Otherwise, sunny, with a high near 70. South southwest wind 5 to 15 mph becoming southeast in the afternoon.

    High: 70 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. Southwest wind around 5 mph becoming south southeast in the afternoon. Winds could gust as high as 15 mph.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 62. South southeast wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog. Otherwise, partly cloudy, with a low around 53. Southeast wind around 5 mph becoming calm.
Memorial Day
Patchy fog before 9am. Otherwise, sunny, with a high near 70. South southwest wind 5 to 15 mph becoming southeast in the afternoon.
Monday Night
Mostly clear, with a low around 61. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday
Sunny, with a high near 78. Southwest wind around 5 mph becoming south southeast in the afternoon. Winds could gust as high as 15 mph.
Tuesday Night
Partly cloudy, with a low around 62. South southeast wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 73.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
Sunny, with a high near 66.
Thursday Night
Partly cloudy, with a low around 54.
Friday
Mostly sunny, with a high near 70.
Friday Night
Mostly cloudy, with a low around 55.
Saturday
Partly sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 55.
Sunday
Mostly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Great Lakes IL
 42.3°N 87.85°W
Last Update:
8:06 pm CDT May 24, 2026
Forecast Valid:
8pm CDT May 24, 2026-6pm CDT May 31, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation