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

19°F

-7°C

Humidity 54%
Wind Speed NW 10 mph
Barometer 29.95 in (1016.2 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill8°F (-13°C)
Last update 2 Jan 11:51 am CST
Extended Forecast for

Mc Cullom Lake IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 23. Northwest wind 5 to 10 mph.

    High: 23 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 16. West northwest wind around 5 mph becoming calm.

    Low: 16 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 26. Calm wind becoming west around 5 mph in the afternoon. Winds could gust as high as 10 mph.

    High: 26 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 12. Northwest wind around 5 mph, with gusts as high as 10 mph.

    Low: 12 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 29. Calm wind becoming south around 5 mph in the afternoon. Winds could gust as high as 10 mph.

    High: 29 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 24.

    Low: 24 °F

    Chance Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 23. Northwest wind 5 to 10 mph.
Tonight
Mostly cloudy, with a low around 16. West northwest wind around 5 mph becoming calm.
Saturday
Mostly cloudy, with a high near 26. Calm wind becoming west around 5 mph in the afternoon. Winds could gust as high as 10 mph.
Saturday Night
Mostly clear, with a low around 12. Northwest wind around 5 mph, with gusts as high as 10 mph.
Sunday
Mostly sunny, with a high near 29. Calm wind becoming south around 5 mph in the afternoon. Winds could gust as high as 10 mph.
Sunday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 24.
Monday
Mostly sunny, with a high near 40.
Monday Night
Mostly cloudy, with a low around 30.
Tuesday
Partly sunny, with a high near 43.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
Partly sunny, with a high near 42.
Wednesday Night
Mostly cloudy, with a low around 32.
Thursday
A chance of rain. Mostly cloudy, with a high near 48.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mc Cullom Lake IL
 42.36°N 88.29°W
Last Update:
12:16 pm CST Jan 2, 2026
Forecast Valid:
12pm CST Jan 2, 2026-6pm CST Jan 8, 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