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

31°F

-1°C

Humidity 43%
Wind Speed SW 5 mph
Barometer 30.64 in (1038.8 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 28 Mar 9:51 am CDT
Extended Forecast for

Zion IL

  • Today

    Today: Sunny, with a high near 47. South wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 47 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 38. South southwest wind around 15 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 60. South southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 60 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 45. South southwest wind around 10 mph, with gusts as high as 15 mph.

    Low: 45 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 65. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 65 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55.

    Low: 55 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 73. Breezy. Chance of precipitation is 70%.

    High: 73 °F

    Breezy.
    Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 47. South wind 5 to 15 mph, with gusts as high as 25 mph.
Tonight
Increasing clouds, with a low around 38. South southwest wind around 15 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, with a high near 60. South southwest wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 45. South southwest wind around 10 mph, with gusts as high as 15 mph.
Monday
Mostly sunny, with a high near 65. South wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 73. Breezy. Chance of precipitation is 70%.
Tuesday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 36.
Wednesday
Partly sunny, with a high near 40.
Wednesday Night
Partly cloudy, with a low around 32.
Thursday
A chance of showers. Mostly sunny, with a high near 40.
Thursday Night
A chance of showers. Partly cloudy, with a low around 37.
Friday
Mostly sunny, with a high near 46.
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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:
3:50 am CDT Mar 28, 2026
Forecast Valid:
10am CDT Mar 28, 2026-6pm CDT Apr 3, 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