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

60°F

16°C

Humidity 93%
Wind Speed SW 16 mph
Barometer 29.68 in (1004.6 mb)
Dewpoint 58°F (14°C)
Visibility 8.00 mi
Last update 7 Mar 3:51 am CST
Extended Forecast for

Zion IL

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Low around 56. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Showers

  • Saturday

    Saturday: Showers likely, mainly before noon. Cloudy, with a temperature falling to around 43 by 5pm. South southwest wind around 15 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 58 °F⇓

    Showers
    Likely then
    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 35. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 35 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 59. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 59 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 46. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 46 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Showers likely after noon. Partly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny
    then Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers. Cloudy, with a low around 36.

    Low: 36 °F

    Showers

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 56. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers likely, mainly before noon. Cloudy, with a temperature falling to around 43 by 5pm. South southwest wind around 15 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 35. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 59. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 46. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 62.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Showers likely after noon. Partly sunny, with a high near 50.
Tuesday Night
Showers. Cloudy, with a low around 36.
Wednesday
A chance of rain and snow showers. Cloudy, with a high near 41.
Wednesday Night
Mostly cloudy, with a low around 28.
Thursday
Mostly sunny, with a high near 42.
Thursday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 34.
Friday
A chance of rain and snow showers. Mostly cloudy, with a high near 50.
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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:
3:25 am CST Mar 7, 2026
Forecast Valid:
4am CST Mar 7, 2026-6pm CDT Mar 13, 2026
 
Forecast Discussion
 
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Additional Resources

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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