National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

60°F

16°C

Humidity 72%
Wind Speed SE 6 mph
Barometer 30.09 in (1018.6 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 16 Oct 5:51 pm CDT
Extended Forecast for

Mc Cullom Lake IL

  • Tonight

    Tonight: A 20 percent chance of showers before 10pm. Partly cloudy, with a low around 54. South southeast wind 5 to 10 mph.

    Low: 54 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 75. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 75 °F

    Partly Sunny

  • Friday Night

    Friday Night: A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 72. Southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 72 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm, then showers after 10pm. Low around 48. Southwest wind 5 to 15 mph becoming northwest after midnight. Chance of precipitation is 80%.

    Low: 48 °F

    Showers

  • Sunday

    Sunday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 58. Breezy.

    High: 58 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: A chance of showers. Partly cloudy, with a low around 45.

    Low: 45 °F

    Chance
    Showers

Detailed Forecast

Tonight
A 20 percent chance of showers before 10pm. Partly cloudy, with a low around 54. South southeast wind 5 to 10 mph.
Friday
Partly sunny, with a high near 75. South wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 72. Southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Saturday Night
Showers likely and possibly a thunderstorm, then showers after 10pm. Low around 48. Southwest wind 5 to 15 mph becoming northwest after midnight. Chance of precipitation is 80%.
Sunday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 58. Breezy.
Sunday Night
Mostly clear, with a low around 40.
Monday
Sunny, with a high near 66.
Monday Night
A chance of showers. Partly cloudy, with a low around 45.
Tuesday
A chance of showers. Partly sunny, with a high near 55.
Tuesday Night
Partly cloudy, with a low around 37.
Wednesday
Mostly sunny, with a high near 57.
Wednesday Night
Mostly cloudy, with a low around 40.
Thursday
Mostly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mc Cullom Lake IL
 42.36°N 88.29°W
Last Update:
4:11 pm CDT Oct 16, 2025
Forecast Valid:
6pm CDT Oct 16, 2025-6pm CDT Oct 23, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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