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

70°F

21°C

Humidity 55%
Wind Speed SE 6 mph
Barometer 30.04 in (1016.5 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 10 Oct 5:51 pm CDT
Extended Forecast for

Zion IL

  • Tonight

    Tonight: Partly cloudy, with a low around 56. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 72. South southeast wind around 5 mph.

    High: 72 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 58. South southwest wind 5 to 10 mph.

    Low: 58 °F

    Increasing
    Clouds

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 81. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64. Southwest wind around 10 mph, with gusts as high as 15 mph.

    Low: 64 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers. Partly cloudy, with a low around 54.

    Low: 54 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers after 1am. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 56. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 72. South southeast wind around 5 mph.
Sunday Night
Increasing clouds, with a low around 58. South southwest wind 5 to 10 mph.
Columbus Day
Mostly sunny, with a high near 81. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64. Southwest wind around 10 mph, with gusts as high as 15 mph.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 54.
Wednesday
Partly sunny, with a high near 66.
Wednesday Night
A chance of showers after 1am. Mostly cloudy, with a low around 52.
Thursday
A chance of showers. Mostly cloudy, with a high near 65.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 48.
Friday
Partly sunny, with a high near 62. Breezy.
Friday Night
Partly cloudy, with a low around 41. Breezy.
Saturday
Partly sunny, with a high near 56.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Zion IL
 42.45°N 87.87°W
Last Update:
2:41 pm CDT Oct 10, 2026
Forecast Valid:
5pm CDT Oct 10, 2026-6pm CDT Oct 17, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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