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.

Light Rain Fog/Mist

37°F

3°C

Humidity 100%
Wind Speed NE 3 mph
Barometer 30.03 in (1018.1 mb)
Dewpoint 37°F (3°C)
Visibility 1.25 mi
Last update 4 Mar 7:51 pm CST
Extended Forecast for

Zion IL

  • Tonight

    Tonight: Scattered showers, mainly before midnight. Patchy fog. Otherwise, cloudy, with a low around 37. Northeast wind around 5 mph. Chance of precipitation is 30%.

    Low: 37 °F

    Scattered
    Showers and
    Patchy Fog

  • Thursday

    Thursday: Scattered showers, mainly before noon. Areas of fog. Otherwise, cloudy, with a high near 40. North northeast wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 40 °F

    Scattered
    Showers and
    Areas Fog

  • Thursday Night

    Thursday Night: Isolated showers after 3am. Areas of fog. Otherwise, cloudy, with a low around 38. North northeast wind around 5 mph becoming southeast after midnight. Chance of precipitation is 20%.

    Low: 38 °F

    Areas Fog
    then Isolated
    Showers and
    Areas Fog

  • Friday

    Friday: Showers and thunderstorms likely before noon, then showers and possibly a thunderstorm between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Areas of fog before 3pm. High near 61. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    High: 61 °F

    Showers and
    Areas Fog

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms, then showers and possibly a thunderstorm after 9pm. Low around 49. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

    Low: 49 °F

    Showers
    Likely then
    Showers

  • Saturday

    Saturday: A 30 percent chance of showers before noon. Partly sunny, with a high near 55.

    High: 55 °F

    Chance
    Showers then
    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Tonight
Scattered showers, mainly before midnight. Patchy fog. Otherwise, cloudy, with a low around 37. Northeast wind around 5 mph. Chance of precipitation is 30%.
Thursday
Scattered showers, mainly before noon. Areas of fog. Otherwise, cloudy, with a high near 40. North northeast wind 5 to 10 mph. Chance of precipitation is 30%.
Thursday Night
Isolated showers after 3am. Areas of fog. Otherwise, cloudy, with a low around 38. North northeast wind around 5 mph becoming southeast after midnight. Chance of precipitation is 20%.
Friday
Showers and thunderstorms likely before noon, then showers and possibly a thunderstorm between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Areas of fog before 3pm. High near 61. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Friday Night
A slight chance of showers and thunderstorms, then showers and possibly a thunderstorm after 9pm. Low around 49. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Saturday
A 30 percent chance of showers before noon. Partly sunny, with a high near 55.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 44.
Monday
Sunny, with a high near 67.
Monday Night
A chance of showers. Partly cloudy, with a low around 45.
Tuesday
Showers likely. Mostly cloudy, with a high near 58.
Tuesday Night
Showers. Cloudy, with a low around 35.
Wednesday
A chance of rain and snow showers. Mostly cloudy, with a high near 44. Breezy.
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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:
8:36 pm CST Mar 4, 2026
Forecast Valid:
8pm CST Mar 4, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation