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Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

28°C

83°F

Humidity 48%
Wind Speed SE 13 km/h
Barometer 1016.5 mb (30.05 in)
Dewpoint 16°C (61°F)
Visibility 13 km
Heat Index29°C (84°F)
Last update 14 Jul 3:51 pm CDT
Extended Forecast for

Zion IL

  • Tonight

    Tonight: Mostly clear, with a low around 19. South southwest wind 5 to 10 km/h.

    Low: 19 °C

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 27. South southwest wind 5 to 15 km/h becoming southeast in the afternoon.

    High: 27 °C

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 22. Southeast wind 5 to 10 km/h becoming south southwest after midnight.

    Low: 22 °C

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 31. Heat index values as high as 36. South wind 10 to 15 km/h.

    High: 31 °C

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 21. West wind around 10 km/h, with gusts as high as 20 km/h. Chance of precipitation is 60%.

    Low: 21 °C

    T-storms
    Likely

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 23.

    High: 23 °C

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 17.

    Low: 17 °C

    Slight Chance
    T-storms

  • Friday

    Friday: Mostly sunny, with a high near 23.

    High: 23 °C

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 19.

    Low: 19 °C

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 19. South southwest wind 5 to 10 km/h.
Tuesday
Sunny, with a high near 27. South southwest wind 5 to 15 km/h becoming southeast in the afternoon.
Tuesday Night
Partly cloudy, with a low around 22. Southeast wind 5 to 10 km/h becoming south southwest after midnight.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 31. Heat index values as high as 36. South wind 10 to 15 km/h.
Wednesday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 21. West wind around 10 km/h, with gusts as high as 20 km/h. Chance of precipitation is 60%.
Thursday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 23.
Thursday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 17.
Friday
Mostly sunny, with a high near 23.
Friday Night
Partly cloudy, with a low around 19.
Saturday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 27.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 22.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 27.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 19.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 26.
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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:
4:12 pm CDT Jul 14, 2025
Forecast Valid:
4pm CDT Jul 14, 2025-6pm CDT Jul 21, 2025
 
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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