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

29°F

-2°C

Humidity 85%
Wind Speed NE 5 mph
Barometer 30.27 in (1026.6 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 2 Mar 7:51 pm CST
Extended Forecast for

Zion IL

  • Tonight

    Tonight: Increasing clouds, with a temperature rising to around 34 by midnight. Southeast wind around 5 mph.

    Low: 30 °F⇑

    Increasing
    Clouds

  • Tuesday

    Tuesday: A slight chance of rain before noon, then a slight chance of rain after 2pm. Mostly cloudy, with a high near 39. East southeast wind around 5 mph becoming calm in the morning. Chance of precipitation is 20%.

    High: 39 °F

    Slight Chance
    Rain

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 33. Calm wind becoming north northeast around 5 mph.

    Low: 33 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers. Partly sunny, with a high near 41. East wind around 5 mph, with gusts as high as 10 mph.

    High: 41 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 38. East wind around 5 mph. Chance of precipitation is 50%.

    Low: 38 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers. High near 44. Chance of precipitation is 80%.

    High: 44 °F

    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Slight Chance
    Showers

  • Friday

    Friday: Showers, mainly after noon. Mostly cloudy, with a high near 59.

    High: 59 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Showers

Detailed Forecast

Tonight
Increasing clouds, with a temperature rising to around 34 by midnight. Southeast wind around 5 mph.
Tuesday
A slight chance of rain before noon, then a slight chance of rain after 2pm. Mostly cloudy, with a high near 39. East southeast wind around 5 mph becoming calm in the morning. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 33. Calm wind becoming north northeast around 5 mph.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 41. East wind around 5 mph, with gusts as high as 10 mph.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 38. East wind around 5 mph. Chance of precipitation is 50%.
Thursday
Showers. High near 44. Chance of precipitation is 80%.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 39.
Friday
Showers, mainly after noon. Mostly cloudy, with a high near 59.
Friday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 48.
Saturday
A chance of showers before noon. Mostly cloudy, with a high near 61.
Saturday Night
Mostly cloudy, with a low around 38.
Sunday
Mostly sunny, with a high near 58.
Sunday Night
Mostly clear, with a low around 41.
Monday
Sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Zion IL
 42.45°N 87.81°W
Last Update:
8:16 pm CST Mar 2, 2026
Forecast Valid:
8pm CST Mar 2, 2026-6pm CDT Mar 9, 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