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.

Fair

38°F

3°C

Humidity 83%
Wind Speed NE 12 mph
Barometer 30.12 in (1020.9 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 25 Dec 2:51 pm CST
Extended Forecast for

Zion IL

  • Christmas Day

    Christmas Day: Mostly cloudy, with a high near 39. East northeast wind around 15 mph, with gusts as high as 20 mph.

    High: 39 °F

    Mostly Cloudy

  • Tonight

    Tonight: Showers, mainly after 11pm. Patchy fog after 2am. Low around 38. Breezy, with a southeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Scattered
    Showers and
    Breezy then
    Showers and
    Patchy Fog

  • Friday

    Friday: Showers likely before 9am. Patchy fog before noon. Otherwise, cloudy, with a high near 45. South southeast wind 5 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Showers
    Likely and
    Patchy Fog
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 36. Northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: Cloudy, with a high near 45. Southeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 45 °F

    Cloudy

  • Saturday Night

    Saturday Night: A 40 percent chance of rain after midnight. Cloudy, with a low around 42.

    Low: 42 °F

    Cloudy then
    Chance Rain

  • Sunday

    Sunday: Rain likely, mainly after noon. Cloudy, with a high near 46. Chance of precipitation is 70%.

    High: 46 °F

    Chance Rain
    then Rain
    Likely

  • Sunday Night

    Sunday Night: A chance of rain before midnight, then a chance of snow. Cloudy, with a low around 19. Blustery.

    Low: 19 °F

    Blustery.
    Chance Rain
    then Chance
    Snow

  • Monday

    Monday: A chance of snow before noon. Partly sunny, with a high near 24. Blustery.

    High: 24 °F

    Blustery.
    Chance Snow
    then Partly
    Sunny

Detailed Forecast

Christmas Day
Mostly cloudy, with a high near 39. East northeast wind around 15 mph, with gusts as high as 20 mph.
Tonight
Showers, mainly after 11pm. Patchy fog after 2am. Low around 38. Breezy, with a southeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers likely before 9am. Patchy fog before noon. Otherwise, cloudy, with a high near 45. South southeast wind 5 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Mostly cloudy, with a low around 36. Northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.
Saturday
Cloudy, with a high near 45. Southeast wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
A 40 percent chance of rain after midnight. Cloudy, with a low around 42.
Sunday
Rain likely, mainly after noon. Cloudy, with a high near 46. Chance of precipitation is 70%.
Sunday Night
A chance of rain before midnight, then a chance of snow. Cloudy, with a low around 19. Blustery.
Monday
A chance of snow before noon. Partly sunny, with a high near 24. Blustery.
Monday Night
Mostly clear, with a low around 14. Blustery.
Tuesday
Partly sunny, with a high near 28.
Tuesday Night
Mostly cloudy, with a low around 19.
Wednesday
Mostly cloudy, with a high near 29.
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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:
2:46 pm CST Dec 25, 2025
Forecast Valid:
3pm CST Dec 25, 2025-6pm CST Dec 31, 2025
 
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Additional Resources

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High Temperature

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Chance of Precipitation