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

28°F

-2°C

Humidity 81%
Wind Speed SW 17 mph
Barometer 29.72 in (1008.0 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 9 Dec 7:51 am CST
Extended Forecast for

Zion IL

  • Today

    Today: A 40 percent chance of rain after 5pm. Cloudy, with a high near 34. West southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 34 °F

    Cloudy then
    Chance Rain

  • Tonight

    Tonight: Rain, snow, and freezing rain before 1am, then a chance of rain between 1am and 5am, then rain and snow likely after 5am. Low around 31. Breezy, with a south southwest wind 15 to 25 mph becoming west after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 100%. Little or no ice accumulation expected. Little or no snow accumulation expected.

    Low: 31 °F

    Breezy.
    Wintry Mix
    then
    Rain/Snow
    Likely

  • Wednesday

    Wednesday: Rain and snow showers, becoming all snow after 7am. Temperature falling to around 28 by 5pm. Breezy, with a northwest wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 34 °F⇓

    Breezy.
    Rain/Snow
    then Slight
    Chance Snow
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 14. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 14 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow after noon. Partly sunny, with a high near 23. West wind 5 to 10 mph.

    High: 23 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Thursday Night

    Thursday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 14.

    Low: 14 °F

    Chance Snow

  • Friday

    Friday: A 40 percent chance of snow. Mostly cloudy, with a high near 27.

    High: 27 °F

    Chance Snow

  • Friday Night

    Friday Night: A chance of snow before midnight. Mostly cloudy, with a low around 4.

    Low: 4 °F

    Chance Snow
    then Mostly
    Cloudy

  • Saturday

    Saturday: A chance of snow. Mostly cloudy and cold, with a high near 10.

    High: 10 °F

    Chance Snow

Detailed Forecast

Today
A 40 percent chance of rain after 5pm. Cloudy, with a high near 34. West southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Tonight
Rain, snow, and freezing rain before 1am, then a chance of rain between 1am and 5am, then rain and snow likely after 5am. Low around 31. Breezy, with a south southwest wind 15 to 25 mph becoming west after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 100%. Little or no ice accumulation expected. Little or no snow accumulation expected.
Wednesday
Rain and snow showers, becoming all snow after 7am. Temperature falling to around 28 by 5pm. Breezy, with a northwest wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Wednesday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 14. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
A 20 percent chance of snow after noon. Partly sunny, with a high near 23. West wind 5 to 10 mph.
Thursday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 14.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near 27.
Friday Night
A chance of snow before midnight. Mostly cloudy, with a low around 4.
Saturday
A chance of snow. Mostly cloudy and cold, with a high near 10.
Saturday Night
A chance of snow before midnight. Mostly cloudy, with a low around 1.
Sunday
Mostly sunny, with a high near 13.
Sunday Night
Mostly cloudy, with a low around 4.
Monday
A chance of snow. Mostly cloudy, with a high near 22.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Zion IL
 42.45°N 87.84°W
Last Update:
8:26 am CST Dec 9, 2025
Forecast Valid:
8am CST Dec 9, 2025-6pm CST Dec 15, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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