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.

Overcast

31°F

-1°C

Humidity 85%
Wind Speed W 8 mph
Barometer 29.63 in (1004.4 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 6 Feb 2:51 am CST
Extended Forecast for

McHenry IL

  • Overnight

    Overnight: Snow showers. Low around 28. West southwest wind 5 to 10 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of less than one inch possible.

    Low: 28 °F

    Snow Showers

  • Friday

    Friday: Scattered snow showers before 1pm, then a chance of flurries between 1pm and 3pm. Cloudy, with a high near 35. 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 50%.

    High: 35 °F

    Breezy.
    Scattered
    Snow Showers
    then Chance
    Flurries

  • Friday Night

    Friday Night: Mostly clear, with a low around 6. Wind chill values as low as -5. Blustery, with a north wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 6 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Saturday

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

    High: 22 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: A 20 percent chance of snow after midnight. Cloudy, with a low around 16. South southeast wind 5 to 10 mph.

    Low: 16 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: Mostly cloudy, with a high near 31.

    High: 31 °F

    Mostly Cloudy

  • Sunday Night

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

    Low: 21 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Monday Night

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

    Low: 29 °F

    Partly Cloudy

Detailed Forecast

Overnight
Snow showers. Low around 28. West southwest wind 5 to 10 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of less than one inch possible.
Friday
Scattered snow showers before 1pm, then a chance of flurries between 1pm and 3pm. Cloudy, with a high near 35. 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 50%.
Friday Night
Mostly clear, with a low around 6. Wind chill values as low as -5. Blustery, with a north wind 10 to 20 mph, with gusts as high as 30 mph.
Saturday
Increasing clouds, with a high near 22. Wind chill values as low as -5. North northwest wind around 5 mph becoming calm. Winds could gust as high as 10 mph.
Saturday Night
A 20 percent chance of snow after midnight. Cloudy, with a low around 16. South southeast wind 5 to 10 mph.
Sunday
Mostly cloudy, with a high near 31.
Sunday Night
Mostly cloudy, with a low around 21.
Monday
Partly sunny, with a high near 41.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Partly sunny, with a high near 45.
Tuesday Night
A chance of rain and snow. Cloudy, with a low around 29.
Wednesday
Mostly cloudy, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
Mostly cloudy, with a high near 34.
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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:
3:10 am CST Feb 6, 2026
Forecast Valid:
3am CST Feb 6, 2026-6pm CST Feb 12, 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