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

73°F

23°C

Humidity 64%
Wind Speed W 7 mph
Barometer 29.81 in (1008.4 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 13 Oct 11:51 am CDT
Extended Forecast for

Zion IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 75. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 75 °F

    Sunny

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly between 10pm and 4am. Increasing clouds, with a low around 59. North northeast wind around 5 mph.

    Low: 59 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers between 7am and 10am. Mostly cloudy, with a high near 61. North northeast wind 10 to 15 mph. Chance of precipitation is 20%.

    High: 61 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 55. North northeast wind around 15 mph.

    Low: 55 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of rain, then rain and possibly a thunderstorm after 1pm. High near 59. East wind 10 to 15 mph. Chance of precipitation is 80%.

    High: 59 °F

    Chance Rain
    then Rain

  • Thursday Night

    Thursday Night: Rain likely before 1am. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.

    Low: 45 °F

    Rain Likely

  • Friday

    Friday: Mostly sunny, with a high near 55. Breezy.

    High: 55 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 75. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Tonight
A 50 percent chance of showers and thunderstorms, mainly between 10pm and 4am. Increasing clouds, with a low around 59. North northeast wind around 5 mph.
Wednesday
A slight chance of showers between 7am and 10am. Mostly cloudy, with a high near 61. North northeast wind 10 to 15 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 55. North northeast wind around 15 mph.
Thursday
A chance of rain, then rain and possibly a thunderstorm after 1pm. High near 59. East wind 10 to 15 mph. Chance of precipitation is 80%.
Thursday Night
Rain likely before 1am. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 55. Breezy.
Friday Night
Mostly clear, with a low around 38.
Saturday
Sunny, with a high near 57.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Sunny, with a high near 62.
Sunday Night
Partly cloudy, with a low around 46.
Monday
Partly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Zion IL
 42.45°N 87.84°W
Last Update:
9:31 am CDT Oct 13, 2026
Forecast Valid:
12pm CDT Oct 13, 2026-6pm CDT Oct 19, 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