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.

Fair

68°F

20°C

Humidity 63%
Wind Speed NE 9 mph
Barometer 30.04 in (1015.8 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 12 Jun 2:51 am CDT
Extended Forecast for

Zion IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 61. Northeast wind around 10 mph.

    Low: 61 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 70. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 70 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 58. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 70. East wind around 10 mph. Chance of precipitation is 40%.

    High: 70 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. East northeast wind 5 to 10 mph. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 67. Chance of precipitation is 20%.

    High: 67 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of thunderstorms before 7pm. Mostly cloudy, with a low around 56. Chance of precipitation is 10%.

    Low: 56 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 61. Northeast wind around 10 mph.
Thursday
Partly sunny, with a high near 70. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 58. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
A chance of showers, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 70. East wind around 10 mph. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. East northeast wind 5 to 10 mph. Chance of precipitation is 30%.
Saturday
A slight chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 67. Chance of precipitation is 20%.
Saturday Night
A slight chance of thunderstorms before 7pm. Mostly cloudy, with a low around 56. Chance of precipitation is 10%.
Sunday
Partly sunny, with a high near 67.
Sunday Night
Partly cloudy, with a low around 57.
Monday
Mostly sunny, with a high near 72.
Monday Night
A chance of showers. Mostly cloudy, with a low around 62.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 82.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 84.
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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:
2:06 am CDT Jun 12, 2025
Forecast Valid:
3am CDT Jun 12, 2025-6pm CDT Jun 18, 2025
 
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