National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Light Rain

54°F

12°C

Humidity 93%
Wind Speed NE 12 G 18 mph
Barometer 30.28 in (1025.2 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 15 Oct 4:51 am CDT
Extended Forecast for

Zion IL

  • Overnight

    Overnight: Showers likely. Cloudy, with a low around 56. East northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 56 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Scattered showers, mainly before 10am. Cloudy, with a high near 61. East northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    High: 61 °F

    Scattered
    Showers then
    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55. Northeast wind 5 to 10 mph.

    Low: 55 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 65. Southeast wind 5 to 10 mph.

    High: 65 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers, mainly after 1am. Partly cloudy, with a low around 57. South southeast wind around 10 mph, with gusts as high as 15 mph.

    Low: 57 °F

    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers. Mostly cloudy, with a high near 69.

    High: 69 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.

    Low: 60 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers. Mostly cloudy, with a high near 70.

    High: 70 °F

    Showers

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Chance
    Showers

Detailed Forecast

Overnight
Showers likely. Cloudy, with a low around 56. East northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Scattered showers, mainly before 10am. Cloudy, with a high near 61. East northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Wednesday Night
Partly cloudy, with a low around 55. Northeast wind 5 to 10 mph.
Thursday
Sunny, with a high near 65. Southeast wind 5 to 10 mph.
Thursday Night
A 30 percent chance of showers, mainly after 1am. Partly cloudy, with a low around 57. South southeast wind around 10 mph, with gusts as high as 15 mph.
Friday
A 20 percent chance of showers. Mostly cloudy, with a high near 69.
Friday Night
A slight chance of showers before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Saturday
Showers. Mostly cloudy, with a high near 70.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 51.
Sunday
A chance of showers. Mostly sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 46.
Monday
Sunny, with a high near 63.
Monday Night
Mostly clear, with a low around 50.
Tuesday
A chance of showers. Mostly sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Zion IL
 42.45°N 87.81°W
Last Update:
4:11 am CDT Oct 15, 2025
Forecast Valid:
5am CDT Oct 15, 2025-6pm CDT Oct 21, 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