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.

Mostly Cloudy

37°F

3°C

Humidity 62%
Wind Speed NW 10 G 18 mph
Barometer 29.61 in (1003.1 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 18 Jan 1:51 am CST
Extended Forecast for

McHenry IL

Cold Weather Advisory January 19, 03:00am until January 19, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory

  • Overnight

    Overnight: Cloudy, with a low around 21. Blustery, with a north northwest wind 15 to 20 mph, with gusts as high as 35 mph.

    Low: 21 °F

    Cloudy and
    Blustery

  • Saturday

    Saturday: Cloudy through mid morning, then gradual clearing, with a temperature falling to around 20 by 5pm. Blustery, with a north northwest wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 24 °F⇓

    Decreasing
    Clouds and
    Blustery then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 1. Wind chill values as low as -14. North northwest wind around 15 mph, with gusts as high as 20 mph.

    Low: 1 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny and cold, with a high near 4. Wind chill values as low as -19. Northwest wind around 15 mph, with gusts as high as 25 mph.

    High: 4 °F

    Cold

  • Sunday Night

    Sunday Night: Mostly clear, with a low around -7. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: -7 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: A chance of flurries after noon. Mostly sunny and cold, with a high near 7.

    High: 7 °F

    Chance
    Flurries

  • Monday Night

    Monday Night: A chance of flurries before midnight. Partly cloudy, with a low around -9.

    Low: -9 °F

    Chance
    Flurries

  • Tuesday

    Tuesday: Sunny and cold, with a high near 4.

    High: 4 °F

    Cold

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around -5.

    Low: -5 °F

    Mostly Clear

Detailed Forecast

Overnight
Cloudy, with a low around 21. Blustery, with a north northwest wind 15 to 20 mph, with gusts as high as 35 mph.
Saturday
Cloudy through mid morning, then gradual clearing, with a temperature falling to around 20 by 5pm. Blustery, with a north northwest wind 15 to 25 mph, with gusts as high as 35 mph.
Saturday Night
Mostly cloudy, with a low around 1. Wind chill values as low as -14. North northwest wind around 15 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny and cold, with a high near 4. Wind chill values as low as -19. Northwest wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around -7. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.
M.L.King Day
A chance of flurries after noon. Mostly sunny and cold, with a high near 7.
Monday Night
A chance of flurries before midnight. Partly cloudy, with a low around -9.
Tuesday
Sunny and cold, with a high near 4.
Tuesday Night
Mostly clear, with a low around -5.
Wednesday
Partly sunny, with a high near 23.
Wednesday Night
Mostly cloudy, with a low around 15.
Thursday
Partly sunny, with a high near 28.
Thursday Night
Mostly cloudy, with a low around 11.
Friday
Partly sunny, with a high near 29.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
McHenry IL
 42.34°N 88.26°W
Last Update:
2:26 am CST Jan 18, 2025
Forecast Valid:
2am CST Jan 18, 2025-6pm CST Jan 24, 2025
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation