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

26°F

-3°C

Humidity 75%
Wind Speed SE 14 mph
Barometer 30.29 in (1027.2 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 8 Feb 8:51 pm CST
Extended Forecast for

Mc Cullom Lake IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 21. Southeast wind 5 to 10 mph.

    Low: 21 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 39. South wind 5 to 10 mph.

    High: 39 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 31. South wind around 10 mph becoming west northwest after midnight. Winds could gust as high as 15 mph.

    Low: 31 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 40. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 40 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 22. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 22 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 21.

    Low: 21 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of snow after noon. Mostly cloudy, with a high near 35.

    High: 35 °F

    Mostly Cloudy
    then Chance
    Snow

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 24.

    Low: 24 °F

    Chance Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 21. Southeast wind 5 to 10 mph.
Monday
Partly sunny, with a high near 39. South wind 5 to 10 mph.
Monday Night
Mostly cloudy, with a low around 31. South wind around 10 mph becoming west northwest after midnight. Winds could gust as high as 15 mph.
Tuesday
Partly sunny, with a high near 40. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 22. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday
Mostly sunny, with a high near 35.
Wednesday Night
Mostly cloudy, with a low around 21.
Thursday
A chance of snow after noon. Mostly cloudy, with a high near 35.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 24.
Friday
Partly sunny, with a high near 38.
Friday Night
Partly cloudy, with a low around 25.
Saturday
A chance of rain and snow. Mostly sunny, with a high near 38.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 26.
Sunday
Mostly cloudy, with a high near 40.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mc Cullom Lake IL
 42.36°N 88.29°W
Last Update:
7:46 pm CST Feb 8, 2026
Forecast Valid:
9pm CST Feb 8, 2026-6pm CST Feb 15, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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