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.

Mostly Cloudy

68°F

20°C

Humidity 96%
Wind Speed NE 10 G 18 mph
Barometer 29.83 in (1009.4 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 1 Aug 9:51 pm CDT
Extended Forecast for

Zion IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 66. North northeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 66 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy through mid morning, then gradual clearing, with a high near 71. North northeast wind around 15 mph, with gusts as high as 25 mph.

    High: 71 °F

    Gradual
    Clearing

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 61. North wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 61 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 72. Northeast wind 5 to 10 mph.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62. Northeast wind around 5 mph becoming calm after midnight.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 64.

    Low: 64 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers. Partly sunny, with a high near 78.

    High: 78 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 1am. Mostly cloudy, with a low around 61.

    Low: 61 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 66. North northeast wind around 15 mph, with gusts as high as 25 mph.
Sunday
Cloudy through mid morning, then gradual clearing, with a high near 71. North northeast wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 61. North wind 5 to 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 72. Northeast wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 62. Northeast wind around 5 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 78.
Tuesday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 64.
Wednesday
A chance of showers. Partly sunny, with a high near 78.
Wednesday Night
A chance of showers before 1am. Mostly cloudy, with a low around 61.
Thursday
Partly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 64.
Friday
Partly sunny, with a high near 81.
Friday Night
Partly cloudy, with a low around 67.
Saturday
Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Zion IL
 42.45°N 87.84°W
Last Update:
10:00 pm CDT Aug 1, 2026
Forecast Valid:
10pm CDT Aug 1, 2026-6pm CDT Aug 8, 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