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Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Overcast

5°F

-15°C

Humidity 57%
Wind Speed N 10 mph
Barometer 30.31 in (1029.5 mb)
Dewpoint -7°F (-22°C)
Visibility 10.00 mi
Wind Chill-10°F (-23°C)
Last update 25 Jan 1:51 am CST
Extended Forecast for

McHenry IL

Cold Weather Advisory January 26, 12:00am until January 26, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory

  • Overnight

    Overnight: A 40 percent chance of snow, mainly before 4am. Cloudy, with a low around 0. Wind chill values as low as -12. North wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 0 °F

    Chance Snow

  • Sunday

    Sunday: A 20 percent chance of snow before 9am. Cloudy, with a high near 12. Wind chill values as low as -13. North wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 12 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • 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 25 mph.

    Low: -4 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny and cold, with a high near 10. Wind chill values as low as -22. West northwest 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 2. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 2 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 14.

    High: 14 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around -2.

    Low: -2 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 12.

    High: 12 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around -3.

    Low: -3 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 40 percent chance of snow, mainly before 4am. Cloudy, with a low around 0. Wind chill values as low as -12. North wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday
A 20 percent chance of snow before 9am. Cloudy, with a high near 12. Wind chill values as low as -13. 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 25 mph.
Monday
Mostly sunny and cold, with a high near 10. Wind chill values as low as -22. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 2. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
Partly sunny, with a high near 14.
Tuesday Night
Mostly clear, with a low around -2.
Wednesday
Partly sunny, with a high near 12.
Wednesday Night
Partly cloudy, with a low around -3.
Thursday
Mostly sunny, with a high near 12.
Thursday Night
Partly cloudy, with a low around 1.
Friday
Mostly sunny, with a high near 16.
Friday Night
Partly cloudy, with a low around 3.
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:
2:16 am CST Jan 25, 2026
Forecast Valid:
2am CST Jan 25, 2026-6pm CST Jan 31, 2026
 
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Additional Resources

Radar & Satellite Image

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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