National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Overcast

29°F

-2°C

Humidity 69%
Wind Speed NW 15 G 22 mph
Barometer 30.29 in (1027.1 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 11 Jan 9:51 am CST
Extended Forecast for

Zion IL

  • Today

    Today: Partly sunny, with a high near 34. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 34 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 27 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Monday

    Monday: Mostly sunny, with a high near 41. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 41 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 34. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 34 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A 30 percent chance of showers, mainly before noon. Partly sunny, with a high near 47. West southwest wind around 15 mph, with gusts as high as 30 mph.

    High: 47 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of rain showers between midnight and 3am, then a chance of rain and snow showers. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.

    Low: 29 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: Snow showers likely, mainly before noon. Mostly cloudy, with a high near 32. Breezy. Chance of precipitation is 60%.

    High: 32 °F

    Snow Showers
    Likely and
    Breezy

  • Wednesday Night

    Wednesday Night: A chance of snow showers. Mostly cloudy, with a low around 18. Blustery.

    Low: 18 °F

    Chance Snow
    Showers and
    Blustery

  • Thursday

    Thursday: Partly sunny, with a high near 28.

    High: 28 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 34. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tonight
Mostly cloudy, with a low around 27. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Monday
Mostly sunny, with a high near 41. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Increasing clouds, with a low around 34. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
A 30 percent chance of showers, mainly before noon. Partly sunny, with a high near 47. West southwest wind around 15 mph, with gusts as high as 30 mph.
Tuesday Night
A slight chance of rain showers between midnight and 3am, then a chance of rain and snow showers. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Wednesday
Snow showers likely, mainly before noon. Mostly cloudy, with a high near 32. Breezy. Chance of precipitation is 60%.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 18. Blustery.
Thursday
Partly sunny, with a high near 28.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 23.
Friday
A chance of snow showers. Mostly cloudy, with a high near 32.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 20.
Saturday
Mostly cloudy, with a high near 25.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Zion IL
 42.45°N 87.81°W
Last Update:
10:26 am CST Jan 11, 2026
Forecast Valid:
10am CST Jan 11, 2026-6pm CST Jan 17, 2026
 
Forecast Discussion
 
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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