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.

Heavy Snow Fog/Mist

24°F

-4°C

Humidity 84%
Wind Speed NW 10 G 30 mph
Barometer 29.34 in (994.9 mb)
Dewpoint 20°F (-7°C)
Visibility 1.25 mi
Wind Chill14°F (-10°C)
Last update 16 Mar 5:51 am CDT
Extended Forecast for

Grayslake IL

Winter Weather Advisory March 16, 06:34am until March 16, 01:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory March 16, 06:34am until March 16, 01:00pm

    NOW until 1:00pm Mon

    Winter Weather Advisory

  • Today

    High: 23 °F

    Snow and
    Areas Blowing
    Snow

  • Tonight

    Tonight: A 20 percent chance of snow before 10pm. Patchy blowing snow before 9pm. Cloudy during the early evening, then gradual clearing, with a low around 7. Wind chill values as low as -5. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 7 °F

    Slight Chance
    Snow and
    Patchy
    Blowing Snow

  • Tuesday

    Tuesday: Mostly sunny, with a high near 23. Wind chill values as low as -7. West northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 23 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Snow likely, mainly after 1am. Cloudy, with a low around 18. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 18 °F

    Chance Snow
    then Snow
    Likely

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 41. Southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 41 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

Detailed Forecast

Today
Snow, mainly before 1pm. Areas of blowing snow. High near 23. Blustery, with a northwest wind around 25 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
A 20 percent chance of snow before 10pm. Patchy blowing snow before 9pm. Cloudy during the early evening, then gradual clearing, with a low around 7. Wind chill values as low as -5. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday
Mostly sunny, with a high near 23. Wind chill values as low as -7. West northwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
Snow likely, mainly after 1am. Cloudy, with a low around 18. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Wednesday
Mostly cloudy, with a high near 41. Southwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday Night
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 31.
Thursday
Mostly sunny, with a high near 49.
Thursday Night
Mostly cloudy, with a low around 33.
Friday
Mostly cloudy, with a high near 54.
Friday Night
Mostly cloudy, with a low around 38.
Saturday
Partly sunny, with a high near 57.
Saturday Night
Partly cloudy, with a low around 35.
Sunday
Partly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grayslake IL
 42.35°N 88.02°W
Last Update:
4:01 am CDT Mar 16, 2026
Forecast Valid:
6am CDT Mar 16, 2026-6pm CDT Mar 22, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation