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

13°F

-11°C

Humidity 77%
Wind Speed NW 13 G 22 mph
Barometer 30.37 in (1030.9 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill-2°F (-19°C)
Last update 31 Jan 3:51 am CST
Extended Forecast for

Grayslake IL

  • Overnight

    Overnight: Scattered flurries. Mostly cloudy, with a low around 10. Wind chill values as low as -5. North northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 10 °F

    Scattered
    Flurries

  • Saturday

    Saturday: Scattered snow showers, mainly before 9am. Partly sunny, with a high near 24. Wind chill values as low as -4. North wind 5 to 15 mph. Chance of precipitation is 30%.

    High: 24 °F

    Scattered
    Snow Showers
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 6. North northwest wind around 5 mph becoming calm in the evening.

    Low: 6 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 26. Wind chill values as low as -1. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 26 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 17. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 17 °F

    Chance Snow

  • Monday

    Monday: Partly sunny, with a high near 28.

    High: 28 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 26.

    High: 26 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 11.

    Low: 11 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Scattered flurries. Mostly cloudy, with a low around 10. Wind chill values as low as -5. North northwest wind around 10 mph, with gusts as high as 20 mph.
Saturday
Scattered snow showers, mainly before 9am. Partly sunny, with a high near 24. Wind chill values as low as -4. North wind 5 to 15 mph. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 6. North northwest wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 26. Wind chill values as low as -1. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 17. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Monday
Partly sunny, with a high near 28.
Monday Night
Mostly cloudy, with a low around 14.
Tuesday
Partly sunny, with a high near 26.
Tuesday Night
Mostly cloudy, with a low around 11.
Wednesday
Mostly sunny, with a high near 25.
Wednesday Night
Partly cloudy, with a low around 10.
Thursday
Partly sunny, with a high near 29.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 23.
Friday
A chance of snow. Mostly cloudy, with a high near 33.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grayslake IL
 42.35°N 88.02°W
Last Update:
2:31 am CST Jan 31, 2026
Forecast Valid:
3am CST Jan 31, 2026-6pm CST Feb 6, 2026
 
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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