National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Partly Cloudy

31°F

-1°C

Humidity 69%
Wind Speed W 10 G 22 mph
Barometer 30.33 in (1028.6 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 11 Jan 3:51 pm CST
Extended Forecast for

Zion IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 34. West wind around 10 mph, with gusts as high as 20 mph.

    High: 34 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 28. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 28 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 41. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 41 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 34. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 34 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of rain. Partly sunny, with a high near 46. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 46 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A chance of rain after midnight, mixing with snow after 3am. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.

    Low: 28 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: Snow, possibly mixed with rain, becoming all snow after noon. High near 35. Breezy. Chance of precipitation is 80%.

    High: 35 °F

    Breezy.
    Rain/Snow
    then Snow
    Likely

  • Wednesday Night

    Wednesday Night: A chance of snow. Mostly cloudy, with a low around 16. Blustery.

    Low: 16 °F

    Chance Snow
    and Blustery

  • Thursday

    Thursday: Partly sunny, with a high near 27.

    High: 27 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 34. West wind around 10 mph, with gusts as high as 20 mph.
Tonight
Mostly cloudy, with a low around 28. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Monday
Mostly sunny, with a high near 41. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 34. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
A 30 percent chance of rain. Partly sunny, with a high near 46. Southwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday Night
A chance of rain after midnight, mixing with snow after 3am. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
Wednesday
Snow, possibly mixed with rain, becoming all snow after noon. High near 35. Breezy. Chance of precipitation is 80%.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 16. Blustery.
Thursday
Partly sunny, with a high near 27.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 23.
Friday
A chance of snow. Mostly cloudy, with a high near 32.
Friday Night
A chance of snow. Mostly cloudy, with a low around 19.
Saturday
A chance of snow. Mostly cloudy, with a high near 26.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Zion IL
 42.45°N 87.81°W
Last Update:
3:11 pm CST Jan 11, 2026
Forecast Valid:
3pm CST Jan 11, 2026-6pm CST Jan 17, 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