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Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

-14°F

-26°C

Humidity 57%
Wind Speed NW 10 G 22 mph
Barometer 30.60 in (1039.5 mb)
Dewpoint -25°F (-32°C)
Visibility 10.00 mi
Wind Chill-33°F (-36°C)
Last update 23 Jan 7:51 am CST
Extended Forecast for

McHenry IL

Cold Weather Advisory January 23, 12:00pm until January 24, 09:00am
Extreme Cold Warning January 23, 08:38am until January 23, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory
Extreme Cold Warning
  •  
    Extreme Cold Warning January 23, 08:38am until January 23, 12:00pm

    NOW until 12:00pm Fri

    Extreme Cold Warning

  • Today

    High: -4 °F

    Scattered
    Flurries

  • Tonight

    Tonight: Partly cloudy, with a low around -14. Wind chill values as low as -28. North northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: -14 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of snow. Mostly cloudy and cold, with a high near 6. Wind chill values as low as -25. North northwest wind around 5 mph.

    High: 6 °F

    Slight Chance
    Snow

  • Saturday Night

    Saturday Night: A 50 percent chance of snow. Cloudy, with a low around 1. Wind chill values as low as -6. North northeast wind around 5 mph, with gusts as high as 15 mph.

    Low: 1 °F

    Chance Snow

  • Sunday

    Sunday: A 50 percent chance of snow. Cloudy, with a high near 14. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 14 °F

    Chance Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around -4.

    Low: -4 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Monday

    Monday: Mostly sunny and cold, with a high near 10.

    High: 10 °F

    Cold

  • Monday Night

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

    Low: 3 °F

    Mostly Cloudy

Detailed Forecast

Today
Scattered flurries before noon. Sunny and cold, with a high near -4. Wind chill values as low as -34. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Partly cloudy, with a low around -14. Wind chill values as low as -28. North northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday
A 20 percent chance of snow. Mostly cloudy and cold, with a high near 6. Wind chill values as low as -25. North northwest wind around 5 mph.
Saturday Night
A 50 percent chance of snow. Cloudy, with a low around 1. Wind chill values as low as -6. North northeast wind around 5 mph, with gusts as high as 15 mph.
Sunday
A 50 percent chance of snow. Cloudy, with a high near 14. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around -4.
Monday
Mostly sunny and cold, with a high near 10.
Monday Night
Mostly cloudy, with a low around 3.
Tuesday
Partly sunny, with a high near 16.
Tuesday Night
Partly cloudy, with a low around 0.
Wednesday
Mostly sunny, with a high near 12.
Wednesday Night
Mostly cloudy, with a low around -3.
Thursday
Mostly sunny, with a high near 11.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
McHenry IL
 42.32°N 88.26°W
Last Update:
6:41 am CST Jan 23, 2026
Forecast Valid:
8am CST Jan 23, 2026-6pm CST Jan 29, 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