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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 52%
Wind Speed NW 10 G 20 mph
Barometer 30.19 in (1025.1 mb)
Dewpoint -12°F (-24°C)
Visibility 10.00 mi
Wind Chill-13°F (-25°C)
Last update 26 Jan 1:51 am CST
Extended Forecast for

Grayslake IL

Cold Weather Advisory January 26, 02:49am until January 26, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory January 26, 02:49am until January 26, 12:00pm

    NOW until 12:00pm Mon

    Cold Weather Advisory

  • Overnight

    Low: -2 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny and cold, with a high near 9. Wind chill values as low as -21. West northwest wind 10 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.

    High: 9 °F

    Cold

  • Monday Night

    Monday Night: A 20 percent chance of snow after midnight. Increasing clouds, with a temperature rising to around 12 by 3am. Wind chill values as low as -12. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 4 °F⇑

    Breezy.
    Increasing
    Clouds then
    Slight Chance
    Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 13. Wind chill values as low as -8. Blustery, with a west northwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 13 °F

    Partly Sunny
    and Blustery

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 0. West wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 0 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 13.

    High: 13 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around -2.

    Low: -2 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 14.

    High: 14 °F

    Sunny

Detailed Forecast

Overnight
Mostly cloudy, with a low around -2. Wind chill values as low as -19. Northwest wind around 15 mph, with gusts as high as 25 mph.
Monday
Sunny and cold, with a high near 9. Wind chill values as low as -21. West northwest wind 10 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.
Monday Night
A 20 percent chance of snow after midnight. Increasing clouds, with a temperature rising to around 12 by 3am. Wind chill values as low as -12. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday
Partly sunny, with a high near 13. Wind chill values as low as -8. Blustery, with a west northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 0. West wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday
Partly sunny, with a high near 13.
Wednesday Night
Partly cloudy, with a low around -2.
Thursday
Sunny, with a high near 14.
Thursday Night
Partly cloudy, with a low around 0.
Friday
Mostly sunny, with a high near 16.
Friday Night
Partly cloudy, with a low around 3.
Saturday
Mostly sunny, with a high near 22.
Saturday Night
Partly cloudy, with a low around 9.
Sunday
Partly sunny, with a high near 26.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grayslake IL
 42.37°N 88.05°W
Last Update:
2:35 am CST Jan 26, 2026
Forecast Valid:
2am CST Jan 26, 2026-6pm CST Feb 1, 2026
 
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Additional Resources

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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