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Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

59°F

15°C

Humidity 32%
Wind Speed S 13 mph
Barometer 29.94 in (1014.2 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 25 Mar 11:51 am CDT
Extended Forecast for

Great Lakes IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 70. South southwest wind around 15 mph, with gusts as high as 30 mph.

    High: 70 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 53. South southwest wind 5 to 10 mph.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm after 1pm. Increasing clouds, with a high near 73. Breezy, with a south southwest wind 5 to 10 mph becoming north northeast 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Mostly Sunny
    then Showers
    Likely and
    Breezy

  • Thursday Night

    Thursday Night: A 30 percent chance of showers, mainly before 10pm. Mostly cloudy, with a low around 30. Blustery, with a north northeast wind around 20 mph, with gusts as high as 35 mph.

    Low: 30 °F

    Blustery.
    Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 38. North wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 38 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 70. South southwest wind around 15 mph, with gusts as high as 30 mph.
Tonight
Partly cloudy, with a low around 53. South southwest wind 5 to 10 mph.
Thursday
Showers likely and possibly a thunderstorm after 1pm. Increasing clouds, with a high near 73. Breezy, with a south southwest wind 5 to 10 mph becoming north northeast 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A 30 percent chance of showers, mainly before 10pm. Mostly cloudy, with a low around 30. Blustery, with a north northeast wind around 20 mph, with gusts as high as 35 mph.
Friday
Partly sunny, with a high near 38. North wind 5 to 15 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 28.
Saturday
Sunny, with a high near 50.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Partly sunny, with a high near 58.
Sunday Night
Partly cloudy, with a low around 46.
Monday
Partly sunny, with a high near 69.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 47.
Tuesday
A chance of showers. Mostly cloudy, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Great Lakes IL
 42.3°N 87.85°W
Last Update:
10:01 am CDT Mar 25, 2026
Forecast Valid:
12pm CDT Mar 25, 2026-6pm CDT Mar 31, 2026
 
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Additional Resources

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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