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

59°F

15°C

Humidity 41%
Wind Speed W 15 G 23 mph
Barometer 30.11 in (1018.9 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 9 Apr 8:51 am CDT
Extended Forecast for

Zion IL

  • Today

    Today: Increasing clouds, with a high near 65. West wind around 10 mph becoming south southeast in the afternoon. Winds could gust as high as 15 mph.

    High: 65 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Showers, mainly after 9pm. Low around 40. East wind 5 to 10 mph becoming north northeast in the evening. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 40 °F

    Showers

  • Friday

    Friday: A 30 percent chance of showers before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 48. North wind around 10 mph, with gusts as high as 15 mph.

    High: 48 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 34. Northeast wind 5 to 10 mph becoming light east in the evening.

    Low: 34 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 48. East southeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 48 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 45. Chance of precipitation is 50%.

    Low: 45 °F

    Chance
    Showers

  • Sunday

    Sunday: A 40 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 72. Breezy.

    High: 72 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Showers likely. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 76.

    High: 76 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Increasing clouds, with a high near 65. West wind around 10 mph becoming south southeast in the afternoon. Winds could gust as high as 15 mph.
Tonight
Showers, mainly after 9pm. Low around 40. East wind 5 to 10 mph becoming north northeast in the evening. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
A 30 percent chance of showers before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 48. North wind around 10 mph, with gusts as high as 15 mph.
Friday Night
Mostly clear, with a low around 34. Northeast wind 5 to 10 mph becoming light east in the evening.
Saturday
Mostly sunny, with a high near 48. East southeast wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 45. Chance of precipitation is 50%.
Sunday
A 40 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 72. Breezy.
Sunday Night
Showers likely. Mostly cloudy, with a low around 58.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 76.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 72.
Tuesday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 44.
Wednesday
A chance of showers. Mostly cloudy, with a high near 61.
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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:
5:17 am CDT Apr 9, 2026
Forecast Valid:
9am CDT Apr 9, 2026-6pm CDT Apr 15, 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