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.

Mostly Cloudy

43°F

6°C

Humidity 65%
Wind Speed NW 13 G 23 mph
Barometer 30.21 in (1023.5 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 6 Apr 9:51 am CDT
Extended Forecast for

Zion IL

  • Today

    Today: Partly sunny, with a high near 47. West northwest wind around 15 mph, with gusts as high as 25 mph.

    High: 47 °F

    Partly Sunny

  • Tonight

    Tonight: A slight chance of rain and snow showers before 8pm, then a slight chance of snow showers. Mostly cloudy, with a low around 26. North wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 26 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Snow
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35. North northeast wind around 10 mph becoming east in the afternoon.

    High: 35 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow showers between 1am and 4am, then a slight chance of rain showers after 4am. Increasing clouds, with a low around 30. South southeast wind 10 to 15 mph. Chance of precipitation is 20%.

    Low: 30 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 57. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 57 °F

    Mostly Cloudy
    and Breezy

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Chance
    Showers

  • Thursday

    Thursday: A 50 percent chance of showers. Mostly cloudy, with a high near 63.

    High: 63 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers before 1pm. Mostly sunny, with a high near 50.

    High: 50 °F

    Chance
    Showers

Detailed Forecast

Today
Partly sunny, with a high near 47. West northwest wind around 15 mph, with gusts as high as 25 mph.
Tonight
A slight chance of rain and snow showers before 8pm, then a slight chance of snow showers. Mostly cloudy, with a low around 26. North wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 35. North northeast wind around 10 mph becoming east in the afternoon.
Tuesday Night
A slight chance of rain and snow showers between 1am and 4am, then a slight chance of rain showers after 4am. Increasing clouds, with a low around 30. South southeast wind 10 to 15 mph. Chance of precipitation is 20%.
Wednesday
Mostly cloudy, with a high near 57. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 51.
Thursday
A 50 percent chance of showers. Mostly cloudy, with a high near 63.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 44.
Friday
A chance of showers before 1pm. Mostly sunny, with a high near 50.
Friday Night
A chance of showers. Partly cloudy, with a low around 40.
Saturday
A chance of showers. Partly sunny, with a high near 51.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 46.
Sunday
A chance of showers. Mostly cloudy, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Zion IL
 42.45°N 87.81°W
Last Update:
4:26 am CDT Apr 6, 2026
Forecast Valid:
10am CDT Apr 6, 2026-6pm CDT Apr 12, 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