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.

Fair

33°F

1°C

Humidity 75%
Wind Speed W 6 mph
Barometer 30.10 in (1020.4 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 11 Mar 9:51 pm CDT
Extended Forecast for

Zion IL

  • Tonight

    Tonight: Mostly clear, with a low around 29. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 29 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 44. West wind around 10 mph, with gusts as high as 15 mph.

    High: 44 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers likely. Mostly cloudy, with a low around 37. Windy, with a south wind 10 to 20 mph increasing to 20 to 30 mph after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Showers
    Likely and
    Windy

  • Friday

    Friday: Mostly sunny, with a high near 45. Very windy, with a west wind 30 to 35 mph, with gusts as high as 55 mph.

    High: 45 °F

    Mostly Sunny
    and Very
    Windy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 28. West northwest wind 5 to 15 mph, with gusts as high as 30 mph.

    Low: 28 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 38.

    High: 38 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A chance of snow showers before 1am, then rain and snow showers likely. Cloudy, with a low around 32. Chance of precipitation is 70%.

    Low: 32 °F

    Chance Snow
    Showers then
    Rain/Snow
    Likely

  • Sunday

    Sunday: Rain and snow showers, becoming all rain after 1pm. Cloudy, with a high near 42. Breezy.

    High: 42 °F

    Rain/Snow and
    Breezy

  • Sunday Night

    Sunday Night: Rain and snow showers likely before 1am, then a chance of snow showers. Cloudy, with a low around 19. Blustery.

    Low: 19 °F

    Rain/Snow
    Likely and
    Blustery

Detailed Forecast

Tonight
Mostly clear, with a low around 29. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 44. West wind around 10 mph, with gusts as high as 15 mph.
Thursday Night
Showers likely. Mostly cloudy, with a low around 37. Windy, with a south wind 10 to 20 mph increasing to 20 to 30 mph after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Mostly sunny, with a high near 45. Very windy, with a west wind 30 to 35 mph, with gusts as high as 55 mph.
Friday Night
Mostly cloudy, with a low around 28. West northwest wind 5 to 15 mph, with gusts as high as 30 mph.
Saturday
Mostly cloudy, with a high near 38.
Saturday Night
A chance of snow showers before 1am, then rain and snow showers likely. Cloudy, with a low around 32. Chance of precipitation is 70%.
Sunday
Rain and snow showers, becoming all rain after 1pm. Cloudy, with a high near 42. Breezy.
Sunday Night
Rain and snow showers likely before 1am, then a chance of snow showers. Cloudy, with a low around 19. Blustery.
Monday
A chance of snow showers before 1pm. Mostly cloudy, with a high near 25. Blustery.
Monday Night
Mostly cloudy, with a low around 9.
Tuesday
Sunny, with a high near 28.
Tuesday Night
Mostly cloudy, with a low around 21.
Wednesday
Mostly cloudy, with a high near 38.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Zion IL
 42.45°N 87.81°W
Last Update:
9:51 pm CDT Mar 11, 2026
Forecast Valid:
10pm CDT Mar 11, 2026-6pm CDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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