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

2°F

-17°C

Humidity 57%
Wind Speed W 9 mph
Barometer 30.24 in (1027.1 mb)
Dewpoint -10°F (-23°C)
Visibility 10.00 mi
Wind Chill-13°F (-25°C)
Last update 19 Jan 5:51 pm CST
Extended Forecast for

Zion IL

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 3. Wind chill values as low as -16. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 3 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 21. Wind chill values as low as -12. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 21 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Snow, mainly after midnight. Temperature rising to around 25 by 3am. South wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 18 °F⇑

    Chance Snow
    then Snow

  • Wednesday

    Wednesday: A 20 percent chance of snow before noon. Mostly cloudy, with a high near 28. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 28 °F

    Slight Chance
    Snow then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of snow before midnight. Mostly cloudy, with a low around 11. West southwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 11 °F

    Chance Snow
    then Mostly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 18.

    High: 18 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -6.

    Low: -6 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny and cold, with a high near 0.

    High: 0 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -9.

    Low: -9 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 3. Wind chill values as low as -16. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday
Mostly sunny, with a high near 21. Wind chill values as low as -12. West wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Snow, mainly after midnight. Temperature rising to around 25 by 3am. South wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Wednesday
A 20 percent chance of snow before noon. Mostly cloudy, with a high near 28. West wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
A 40 percent chance of snow before midnight. Mostly cloudy, with a low around 11. West southwest wind around 15 mph, with gusts as high as 25 mph.
Thursday
Mostly sunny, with a high near 18.
Thursday Night
Mostly cloudy, with a low around -6.
Friday
Partly sunny and cold, with a high near 0.
Friday Night
Mostly cloudy, with a low around -9.
Saturday
Mostly sunny and cold, with a high near 5.
Saturday Night
Mostly cloudy, with a low around -4.
Sunday
Mostly sunny, with a high near 12.
Sunday Night
Mostly cloudy, with a low around 3.
Monday
Mostly sunny, with a high near 18.
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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:
3:11 pm CST Jan 19, 2026
Forecast Valid:
5pm CST Jan 19, 2026-6pm CST Jan 26, 2026
 
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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