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

23°F

-5°C

Humidity 88%
Wind Speed NW 20 G 36 mph
Barometer 29.39 in (996.5 mb)
Dewpoint 20°F (-7°C)
Visibility 0.75 mi
Wind Chill8°F (-13°C)
Last update 16 Mar 6:51 am CDT
Extended Forecast for

Zion IL

Winter Weather Advisory March 16, 07:54am until March 16, 01:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory March 16, 07:54am until March 16, 01:00pm

    NOW until 1:00pm Mon

    Winter Weather Advisory

  • Today

    High: 24 °F

    Snow and
    Areas Blowing
    Snow

  • Tonight

    Tonight: A 20 percent chance of snow before 1am. Patchy blowing snow before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 11. Wind chill values as low as -4. Blustery, with a northwest wind 15 to 25 mph, with gusts as high as 35 mph.

    Low: 11 °F

    Slight Chance
    Snow and
    Patchy
    Blowing Snow

  • Tuesday

    Tuesday: Mostly sunny, with a high near 24. Wind chill values as low as -6. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 24 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Snow likely, mainly after 1am. Cloudy, with a low around 20. South wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 20 °F

    Chance Snow
    then Snow
    Likely

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 40. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 40 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

Detailed Forecast

Today
Snow, mainly before 1pm. Areas of blowing snow. High near 24. Windy, with a northwest wind around 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
A 20 percent chance of snow before 1am. Patchy blowing snow before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 11. Wind chill values as low as -4. Blustery, with a northwest wind 15 to 25 mph, with gusts as high as 35 mph.
Tuesday
Mostly sunny, with a high near 24. Wind chill values as low as -6. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Snow likely, mainly after 1am. Cloudy, with a low around 20. South wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday
Mostly cloudy, with a high near 40. South wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 33.
Thursday
Mostly sunny, with a high near 47.
Thursday Night
Mostly cloudy, with a low around 34.
Friday
Mostly cloudy, with a high near 50.
Friday Night
Mostly cloudy, with a low around 38.
Saturday
Partly sunny, with a high near 51.
Saturday Night
Partly cloudy, with a low around 36.
Sunday
Partly sunny, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Zion IL
 42.45°N 87.81°W
Last Update:
4:01 am CDT Mar 16, 2026
Forecast Valid:
7am CDT Mar 16, 2026-6pm CDT Mar 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation