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

14°F

-10°C

Humidity 44%
Wind Speed NW 3 mph
Barometer 30.28 in (1028.3 mb)
Dewpoint -4°F (-20°C)
Visibility 10.00 mi
Last update 29 Jan 3:51 pm CST
Extended Forecast for

McHenry IL

  • Tonight

    Tonight: Partly cloudy, with a low around 1. Wind chill values as low as -10. Northwest wind around 5 mph, with gusts as high as 10 mph.

    Low: 1 °F

    Partly Cloudy

  • Friday

    Friday: Snow showers, mainly before 3pm. High near 18. Wind chill values as low as -12. North northwest wind 5 to 15 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 18 °F

    Snow Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 7. Wind chill values as low as -6. North northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 7 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 23. Wind chill values as low as -5. North northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 23 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 5. Northwest wind around 5 mph becoming calm in the evening.

    Low: 5 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 27.

    High: 27 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 16.

    Low: 16 °F

    Chance Snow

  • Monday

    Monday: Partly sunny, with a high near 27.

    High: 27 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 13.

    Low: 13 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 1. Wind chill values as low as -10. Northwest wind around 5 mph, with gusts as high as 10 mph.
Friday
Snow showers, mainly before 3pm. High near 18. Wind chill values as low as -12. North northwest wind 5 to 15 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Friday Night
Mostly cloudy, with a low around 7. Wind chill values as low as -6. North northwest wind around 10 mph, with gusts as high as 20 mph.
Saturday
Mostly sunny, with a high near 23. Wind chill values as low as -5. North northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 5. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 27.
Sunday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 16.
Monday
Partly sunny, with a high near 27.
Monday Night
Mostly cloudy, with a low around 13.
Tuesday
Mostly cloudy, with a high near 27.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 16.
Wednesday
A chance of snow. Mostly cloudy, with a high near 27.
Wednesday Night
Mostly cloudy, with a low around 15.
Thursday
Mostly cloudy, with a high near 28.
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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:
3:12 pm CST Jan 29, 2026
Forecast Valid:
4pm CST Jan 29, 2026-6pm CST Feb 5, 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