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

30°F

-1°C

Humidity 64%
Wind Speed E 6 mph
Barometer 30.42 in (1031.5 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 7 Apr 6:51 pm CDT
Extended Forecast for

Mc Cullom Lake IL

  • Tonight

    Tonight: A chance of snow showers after 1am, mixing with rain after 4am. Mostly cloudy, with a low around 29. East southeast wind 10 to 15 mph. Chance of precipitation is 30%.

    Low: 29 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: Cloudy through mid morning, then gradual clearing, with a high near 65. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 65 °F

    Gradual
    Clearing and
    Breezy

  • Wednesday Night

    Wednesday Night: Showers. Low around 47. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 47 °F

    Showers and
    Breezy

  • Thursday

    Thursday: Showers likely before 7am. Mostly sunny, with a high near 62. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 62 °F

    Showers
    Likely then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers. Low around 40. Northwest wind around 5 mph becoming northeast in the evening. Chance of precipitation is 80%.

    Low: 40 °F

    Showers

  • Friday

    Friday: A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 54.

    High: 54 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance
    Showers

Detailed Forecast

Tonight
A chance of snow showers after 1am, mixing with rain after 4am. Mostly cloudy, with a low around 29. East southeast wind 10 to 15 mph. Chance of precipitation is 30%.
Wednesday
Cloudy through mid morning, then gradual clearing, with a high near 65. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph.
Wednesday Night
Showers. Low around 47. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Showers likely before 7am. Mostly sunny, with a high near 62. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Thursday Night
Showers. Low around 40. Northwest wind around 5 mph becoming northeast in the evening. Chance of precipitation is 80%.
Friday
A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 54.
Friday Night
Partly cloudy, with a low around 34.
Saturday
Mostly sunny, with a high near 59.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 47.
Sunday
A chance of showers. Mostly cloudy, with a high near 76.
Sunday Night
Showers likely. Mostly cloudy, with a low around 61.
Monday
A chance of showers. Mostly cloudy, with a high near 77.
Monday Night
Showers likely. Mostly cloudy, with a low around 48.
Tuesday
Showers likely. Mostly cloudy, with a high near 66.
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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:
3:11 pm CDT Apr 7, 2026
Forecast Valid:
7pm CDT Apr 7, 2026-6pm CDT Apr 14, 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