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.

Overcast

20°F

-7°C

Humidity 62%
Wind Speed SW 18 mph
Barometer 29.92 in (1015.4 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill5°F (-15°C)
Last update 5 Dec 9:51 am CST
Extended Forecast for

Zion IL

  • Today

    Today: Mostly cloudy, with a high near 26. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 26 °F

    Mostly Cloudy

  • Tonight

    Tonight: Patchy snow and freezing rain before 3am. Mostly cloudy, with a steady temperature around 26. Southwest wind 10 to 15 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 40%.

    Low: 26 °F

    Patchy Wintry
    Mix

  • Saturday

    Saturday: Partly sunny, with a high near 25. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 25 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Snow likely, mainly after midnight. Mostly cloudy, with a low around 17. Calm wind becoming north northwest around 5 mph after midnight. Winds could gust as high as 10 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 17 °F

    Slight Chance
    Snow then
    Snow Likely

  • Sunday

    Sunday: Snow likely, mainly before noon. Partly sunny, with a high near 27. North northwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 27 °F

    Snow Likely
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow showers. Mostly cloudy, with a low around 12.

    Low: 12 °F

    Slight Chance
    Snow Showers

  • Monday

    Monday: Mostly cloudy, with a high near 25.

    High: 25 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Snow likely, mainly after midnight. Mostly cloudy, with a low around 18.

    Low: 18 °F

    Snow Likely

  • Tuesday

    Tuesday: A chance of snow. Mostly cloudy, with a high near 36.

    High: 36 °F

    Chance Snow

Detailed Forecast

Today
Mostly cloudy, with a high near 26. Southwest wind around 15 mph, with gusts as high as 25 mph.
Tonight
Patchy snow and freezing rain before 3am. Mostly cloudy, with a steady temperature around 26. Southwest wind 10 to 15 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 25. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
Snow likely, mainly after midnight. Mostly cloudy, with a low around 17. Calm wind becoming north northwest around 5 mph after midnight. Winds could gust as high as 10 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Sunday
Snow likely, mainly before noon. Partly sunny, with a high near 27. North northwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Sunday Night
A 20 percent chance of snow showers. Mostly cloudy, with a low around 12.
Monday
Mostly cloudy, with a high near 25.
Monday Night
Snow likely, mainly after midnight. Mostly cloudy, with a low around 18.
Tuesday
A chance of snow. Mostly cloudy, with a high near 36.
Tuesday Night
Rain and snow. Cloudy, with a low around 30.
Wednesday
Rain and snow likely. Cloudy, with a high near 36.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 14.
Thursday
A chance of snow. Partly sunny, with a high near 23.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Zion IL
 42.45°N 87.84°W
Last Update:
9:06 am CST Dec 5, 2025
Forecast Valid:
9am CST Dec 5, 2025-6pm CST Dec 11, 2025
 
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