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

13°F

-11°C

Humidity 46%
Wind Speed W 16 G 24 mph
Barometer 30.12 in (1022.5 mb)
Dewpoint -4°F (-20°C)
Visibility 10.00 mi
Wind Chill-3°F (-19°C)
Last update 27 Jan 1:51 pm CST
Extended Forecast for

McHenry IL

  • This Afternoon

    This Afternoon: A chance of flurries. Mostly sunny, with a high near 13. Wind chill values as low as -7. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 13 °F

    Chance
    Flurries and
    Blustery

  • Tonight

    Tonight: Mostly clear, with a low around 0. Wind chill values as low as -14. West wind 5 to 10 mph.

    Low: 0 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 13. Wind chill values as low as -14. West wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 13 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around -2. Wind chill values as low as -13. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: -2 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 12. Northwest wind 5 to 10 mph.

    High: 12 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of snow after midnight. Partly cloudy, with a low around 0.

    Low: 0 °F

    Partly Cloudy
    then Slight
    Chance Snow

  • Friday

    Friday: A 30 percent chance of snow. Mostly sunny, with a high near 14.

    High: 14 °F

    Chance Snow

  • Friday Night

    Friday Night: Partly cloudy, with a low around 4.

    Low: 4 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 21.

    High: 21 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A chance of flurries. Mostly sunny, with a high near 13. Wind chill values as low as -7. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 0. Wind chill values as low as -14. West wind 5 to 10 mph.
Wednesday
Mostly sunny, with a high near 13. Wind chill values as low as -14. West wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around -2. Wind chill values as low as -13. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday
Sunny, with a high near 12. Northwest wind 5 to 10 mph.
Thursday Night
A 20 percent chance of snow after midnight. Partly cloudy, with a low around 0.
Friday
A 30 percent chance of snow. Mostly sunny, with a high near 14.
Friday Night
Partly cloudy, with a low around 4.
Saturday
Mostly sunny, with a high near 21.
Saturday Night
Partly cloudy, with a low around 6.
Sunday
Mostly sunny, with a high near 24.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 13.
Monday
Mostly cloudy, with a high near 26.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
McHenry IL
 42.34°N 88.26°W
Last Update:
2:01 pm CST Jan 27, 2026
Forecast Valid:
2pm CST Jan 27, 2026-6pm CST Feb 2, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation