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

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

1°F

-17°C

Humidity 72%
Wind Speed W 7 mph
Barometer 30.29 in (1028.8 mb)
Dewpoint -6°F (-21°C)
Visibility 10.00 mi
Wind Chill-12°F (-24°C)
Last update 20 Jan 2:51 am CST
Extended Forecast for

Mc Cullom Lake IL

  • Overnight

    Overnight: Mostly clear, with a low around -2. Wind chill values as low as -14. West wind around 5 mph, with gusts as high as 15 mph.

    Low: -2 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 18. Wind chill values as low as -15. West southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 18 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Snow, mainly after 11pm. Temperature rising to around 19 by 3am. South southeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Low: 15 °F⇑

    Snow Likely
    then Snow

  • Wednesday

    Wednesday: A 20 percent chance of snow before 9am. Mostly cloudy, with a high near 25. West southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 25 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Snow showers likely before midnight. Patchy blowing snow before 3am. Mostly cloudy, with a low around 9. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

    Low: 9 °F

    Snow Showers
    Likely and
    Patchy
    Blowing Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 17.

    High: 17 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -11.

    Low: -11 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near -3.

    High: -3 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around -12.

    Low: -12 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around -2. Wind chill values as low as -14. West wind around 5 mph, with gusts as high as 15 mph.
Tuesday
Increasing clouds, with a high near 18. Wind chill values as low as -15. West southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday Night
Snow, mainly after 11pm. Temperature rising to around 19 by 3am. South southeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Wednesday
A 20 percent chance of snow before 9am. Mostly cloudy, with a high near 25. West southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Snow showers likely before midnight. Patchy blowing snow before 3am. Mostly cloudy, with a low around 9. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Thursday
Mostly sunny, with a high near 17.
Thursday Night
Partly cloudy, with a low around -11.
Friday
Mostly sunny and cold, with a high near -3.
Friday Night
Partly cloudy, with a low around -12.
Saturday
Partly sunny and cold, with a high near 3.
Saturday Night
A chance of snow. Mostly cloudy, with a low around -6.
Sunday
Mostly sunny, with a high near 14.
Sunday Night
Partly cloudy, with a low around -2.
Monday
Mostly sunny, with a high near 14.
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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:
2:31 am CST Jan 20, 2026
Forecast Valid:
3am CST Jan 20, 2026-6pm CST Jan 26, 2026
 
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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