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.

Partly Cloudy

30°F

-1°C

Humidity 82%
Wind Speed W 8 mph
Barometer 29.70 in (1007.0 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 5 Feb 11:51 pm CST
Extended Forecast for

McHenry IL

  • Overnight

    Overnight: A chance of snow between 1am and 3am, then snow, possibly mixed with freezing rain. Low around 29. West southwest wind 5 to 10 mph. Chance of precipitation is 90%. Little or no ice accumulation expected. Total nighttime snow accumulation of less than one inch possible.

    Low: 29 °F

    Wintry Mix

  • Friday

    Friday: Snow likely, possibly mixed with freezing rain, mainly before 7am. Mostly cloudy, with a high near 36. Breezy, with a north northwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 70%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.

    High: 36 °F

    Breezy.
    Wintry Mix
    Likely then
    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly clear, with a low around 7. Wind chill values as low as -4. North wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 7 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 22. Wind chill values as low as -4. North northwest wind around 5 mph becoming calm in the afternoon. Winds could gust as high as 10 mph.

    High: 22 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 16. Calm wind becoming south southeast around 5 mph in the evening. Winds could gust as high as 10 mph.

    Low: 16 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 32.

    High: 32 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of snow between 1am and 3am, then snow, possibly mixed with freezing rain. Low around 29. West southwest wind 5 to 10 mph. Chance of precipitation is 90%. Little or no ice accumulation expected. Total nighttime snow accumulation of less than one inch possible.
Friday
Snow likely, possibly mixed with freezing rain, mainly before 7am. Mostly cloudy, with a high near 36. Breezy, with a north northwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 70%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.
Friday Night
Mostly clear, with a low around 7. Wind chill values as low as -4. North wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday
Increasing clouds, with a high near 22. Wind chill values as low as -4. North northwest wind around 5 mph becoming calm in the afternoon. Winds could gust as high as 10 mph.
Saturday Night
Mostly cloudy, with a low around 16. Calm wind becoming south southeast around 5 mph in the evening. Winds could gust as high as 10 mph.
Sunday
Mostly cloudy, with a high near 32.
Sunday Night
Mostly cloudy, with a low around 19.
Monday
Partly sunny, with a high near 40.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Sunny, with a high near 48.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
Cloudy, with a high near 41.
Wednesday Night
A chance of rain and snow. Cloudy, with a low around 27.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 37.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
McHenry IL
 42.34°N 88.26°W
Last Update:
12:16 am CST Feb 6, 2026
Forecast Valid:
12am CST Feb 6, 2026-6pm CST Feb 12, 2026
 
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Additional Resources

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Chance of Precipitation