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

7°F

-14°C

Humidity 87%
Wind Speed SW 7 mph
Barometer 30.08 in (1021.1 mb)
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Wind Chill-5°F (-21°C)
Last update 5 Dec 1:51 am CST
Extended Forecast for

Zion IL

  • Overnight

    Overnight: Mostly clear early, then becoming mostly cloudy, with a steady temperature around 10. Wind chill values as low as -7. Southwest wind around 15 mph, with gusts as high as 20 mph.

    Low: 10 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 27. Wind chill values as low as -4. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 27 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Patchy snow and freezing rain before 3am. Cloudy, with a low around 22. Southwest wind 10 to 15 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 30%.

    Low: 22 °F

    Patchy Wintry
    Mix

  • Saturday

    Saturday: Partly sunny, with a high near 26. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 26 °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%.

    Low: 17 °F

    Slight Chance
    Snow then
    Snow Likely

  • Sunday

    Sunday: Snow likely, mainly before noon. Partly sunny, with a high near 27. 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

Detailed Forecast

Overnight
Mostly clear early, then becoming mostly cloudy, with a steady temperature around 10. Wind chill values as low as -7. Southwest wind around 15 mph, with gusts as high as 20 mph.
Friday
Mostly cloudy, with a high near 27. Wind chill values as low as -4. Southwest wind around 15 mph, with gusts as high as 25 mph.
Friday Night
Patchy snow and freezing rain before 3am. Cloudy, with a low around 22. Southwest wind 10 to 15 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 26. 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%.
Sunday
Snow likely, mainly before noon. Partly sunny, with a high near 27. 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:
1:50 am CST Dec 5, 2025
Forecast Valid:
2am CST Dec 5, 2025-6pm CST Dec 11, 2025
 
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