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

17°F

-8°C

Humidity 77%
Wind Speed NW 10 G 20 mph
Barometer 30.38 in (1031.1 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill5°F (-15°C)
Last update 31 Jan 7:51 am CST
Extended Forecast for

McHenry IL

  • Today

    Today: Isolated snow showers before 9am, then scattered flurries between 9am and 10am. Partly sunny, with a high near 24. Wind chill values as low as -3. North wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 24 °F

    Isolated Snow
    Showers then
    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 6. North northwest wind around 5 mph becoming calm in the evening.

    Low: 6 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 26. Wind chill values as low as -2. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 26 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 17. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 17 °F

    Chance Snow

  • Monday

    Monday: Partly sunny, with a high near 28. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 28 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 26.

    High: 26 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 10.

    Low: 10 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 25.

    High: 25 °F

    Mostly Sunny

Detailed Forecast

Today
Isolated snow showers before 9am, then scattered flurries between 9am and 10am. Partly sunny, with a high near 24. Wind chill values as low as -3. North wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 6. North northwest wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 26. Wind chill values as low as -2. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 17. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Monday
Partly sunny, with a high near 28. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Monday Night
Mostly cloudy, with a low around 14.
Tuesday
Partly sunny, with a high near 26.
Tuesday Night
Mostly cloudy, with a low around 10.
Wednesday
Mostly sunny, with a high near 25.
Wednesday Night
Partly cloudy, with a low around 9.
Thursday
Partly sunny, with a high near 29.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 23.
Friday
A chance of snow. Mostly cloudy, with a high near 33.
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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:
5:56 am CST Jan 31, 2026
Forecast Valid:
8am CST Jan 31, 2026-6pm CST Feb 6, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation