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

27°F

-3°C

Humidity 63%
Wind Speed SE 6 mph
Barometer 30.43 in (1032.0 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 2 Mar 4:51 am CST
Extended Forecast for

Zion IL

  • Today

    Today: Sunny, with a high near 37. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 37 °F

    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers after 3am. Mostly cloudy, with a low around 33. South southeast wind 5 to 10 mph.

    Low: 33 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers. Mostly cloudy, with a high near 38. Southeast wind around 5 mph becoming east northeast in the afternoon.

    High: 38 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 34. Northeast wind 5 to 10 mph.

    Low: 34 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A 50 percent chance of showers. Partly sunny, with a high near 40. East northeast wind around 10 mph.

    High: 40 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Cloudy, with a low around 38. Chance of precipitation is 60%.

    Low: 38 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Cloudy, with a high near 44. Chance of precipitation is 60%.

    High: 44 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

  • Friday

    Friday: Showers, mainly after noon. Cloudy, with a high near 57.

    High: 57 °F

    Showers

Detailed Forecast

Today
Sunny, with a high near 37. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
A 20 percent chance of showers after 3am. Mostly cloudy, with a low around 33. South southeast wind 5 to 10 mph.
Tuesday
A 30 percent chance of showers. Mostly cloudy, with a high near 38. Southeast wind around 5 mph becoming east northeast in the afternoon.
Tuesday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 34. Northeast wind 5 to 10 mph.
Wednesday
A 50 percent chance of showers. Partly sunny, with a high near 40. East northeast wind around 10 mph.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Cloudy, with a low around 38. Chance of precipitation is 60%.
Thursday
Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Cloudy, with a high near 44. Chance of precipitation is 60%.
Thursday Night
Mostly cloudy, with a low around 38.
Friday
Showers, mainly after noon. Cloudy, with a high near 57.
Friday Night
Showers. Mostly cloudy, with a low around 46.
Saturday
A chance of showers. Mostly cloudy, with a high near 58.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Zion IL
 42.45°N 87.81°W
Last Update:
4:21 am CST Mar 2, 2026
Forecast Valid:
5am CST Mar 2, 2026-6pm CDT Mar 8, 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