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

2°F

-17°C

Humidity 49%
Wind Speed W 3 mph
Barometer 30.53 in (1037.6 mb)
Dewpoint -13°F (-25°C)
Visibility 10.00 mi
Last update 24 Jan 4:51 pm CST
Extended Forecast for

McHenry IL

  • This Afternoon

    This Afternoon: A 20 percent chance of snow. Cloudy and cold, with a high near 4. Wind chill values as low as -5. North wind around 5 mph.

    High: 4 °F

    Slight Chance
    Snow

  • Tonight

    Tonight: A 20 percent chance of snow. Cloudy, with a low around -1. Wind chill values as low as -14. North wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: -1 °F

    Slight Chance
    Snow

  • Sunday

    Sunday: A 40 percent chance of snow. Cloudy, with a high near 12. Wind chill values as low as -12. North wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 12 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -4. Wind chill values as low as -19. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: -4 °F

    Partly Cloudy

  • Monday

    Monday: Sunny and cold, with a high near 10. West wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 10 °F

    Cold

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 3.

    Low: 3 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 15.

    High: 15 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around -1.

    Low: -1 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 12.

    High: 12 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A 20 percent chance of snow. Cloudy and cold, with a high near 4. Wind chill values as low as -5. North wind around 5 mph.
Tonight
A 20 percent chance of snow. Cloudy, with a low around -1. Wind chill values as low as -14. North wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday
A 40 percent chance of snow. Cloudy, with a high near 12. Wind chill values as low as -12. North wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around -4. Wind chill values as low as -19. Northwest wind around 10 mph, with gusts as high as 20 mph.
Monday
Sunny and cold, with a high near 10. West wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 3.
Tuesday
Partly sunny, with a high near 15.
Tuesday Night
Partly cloudy, with a low around -1.
Wednesday
Mostly cloudy, with a high near 12.
Wednesday Night
Partly cloudy, with a low around -1.
Thursday
Mostly sunny, with a high near 13.
Thursday Night
Mostly clear, with a low around 1.
Friday
Mostly sunny, with a high near 16.
Friday Night
Partly cloudy, with a low around 4.
Saturday
Mostly sunny, with a high near 20.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
McHenry IL
 42.34°N 88.26°W
Last Update:
4:31 pm CST Jan 24, 2026
Forecast Valid:
5pm CST Jan 24, 2026-6pm CST Jan 31, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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