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.

Overcast

25°F

-4°C

Humidity 63%
Wind Speed NW 7 mph
Barometer 30.36 in (1030.1 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 4 Feb 1:51 pm CST
Extended Forecast for

Mc Cullom Lake IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 25. West northwest wind around 5 mph.

    High: 25 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 12. West northwest wind around 5 mph becoming southwest after midnight.

    Low: 12 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Snow showers likely, mainly before noon. Cloudy, with a high near 31. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 31 °F

    Snow Showers
    Likely then
    Isolated Snow
    Showers

  • Thursday Night

    Thursday Night: A chance of snow showers after midnight, mixing with freezing rain after 3am. Mostly cloudy, with a low around 26. West southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    Low: 26 °F

    Cloudy then
    Chance Wintry
    Mix

  • Friday

    Friday: A 20 percent chance of snow showers. Mostly cloudy, with a high near 38. Breezy, with a west wind 10 to 20 mph becoming north in the afternoon. Winds could gust as high as 35 mph.

    High: 38 °F

    Slight Chance
    Snow Showers
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 7.

    Low: 7 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 23.

    High: 23 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 34.

    High: 34 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 25. West northwest wind around 5 mph.
Tonight
Increasing clouds, with a low around 12. West northwest wind around 5 mph becoming southwest after midnight.
Thursday
Snow showers likely, mainly before noon. Cloudy, with a high near 31. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday Night
A chance of snow showers after midnight, mixing with freezing rain after 3am. Mostly cloudy, with a low around 26. West southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Friday
A 20 percent chance of snow showers. Mostly cloudy, with a high near 38. Breezy, with a west wind 10 to 20 mph becoming north in the afternoon. Winds could gust as high as 35 mph.
Friday Night
Mostly clear, with a low around 7.
Saturday
Mostly sunny, with a high near 23.
Saturday Night
Mostly cloudy, with a low around 17.
Sunday
Mostly cloudy, with a high near 34.
Sunday Night
Partly cloudy, with a low around 22.
Monday
Partly sunny, with a high near 44.
Monday Night
Partly cloudy, with a low around 30.
Tuesday
Partly sunny, with a high near 43.
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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:
1:40 pm CST Feb 4, 2026
Forecast Valid:
2pm CST Feb 4, 2026-6pm CST Feb 10, 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