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.

Mostly Cloudy

45°F

7°C

Humidity 90%
Wind Speed N 7 mph
Barometer 29.82 in (1010.1 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 11 Nov 11:51 pm CST
Extended Forecast for

Zion IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 38. Breezy, with a north wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 38 °F

    Mostly Cloudy
    and Breezy

  • Thursday

    Thursday: Rain likely, mainly after noon. Partly sunny, with a high near 42. Breezy, with a north wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 42 °F

    Breezy.
    Slight Chance
    Rain then
    Rain Likely

  • Thursday Night

    Thursday Night: A slight chance of rain before 8pm, then a slight chance of rain and snow between 8pm and midnight, then a chance of snow after midnight. Mostly cloudy, with a low around 33. Breezy, with a north northwest wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 30%.

    Low: 33 °F

    Breezy.
    Slight Chance
    Rain/Snow
    then Chance
    Snow

  • Friday

    Friday: A 20 percent chance of rain after noon. Partly sunny, with a high near 44. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 44 °F

    Breezy.
    Partly Sunny
    then Slight
    Chance Rain

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 30 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 38. Breezy, with a north wind 10 to 20 mph, with gusts as high as 30 mph.
Thursday
Rain likely, mainly after noon. Partly sunny, with a high near 42. Breezy, with a north wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
A slight chance of rain before 8pm, then a slight chance of rain and snow between 8pm and midnight, then a chance of snow after midnight. Mostly cloudy, with a low around 33. Breezy, with a north northwest wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 30%.
Friday
A 20 percent chance of rain after noon. Partly sunny, with a high near 44. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.
Friday Night
Partly cloudy, with a low around 30. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday
Mostly sunny, with a high near 46.
Saturday Night
Mostly clear, with a low around 31.
Sunday
Sunny, with a high near 49.
Sunday Night
Partly cloudy, with a low around 31.
Monday
Mostly sunny, with a high near 49.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Sunny, with a high near 51.
Tuesday Night
Mostly clear, with a low around 32.
Wednesday
Mostly sunny, with a high near 53.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Zion IL
 42.45°N 87.84°W
Last Update:
6:40 pm CST Nov 11, 2026
Forecast Valid:
11pm CST Nov 11, 2026-6pm CST Nov 18, 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