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.

Mostly Cloudy

35°F

2°C

Humidity 85%
Wind Speed NE 17 G 28 mph
Barometer 30.15 in (1021.9 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 1 Apr 4:49 am CDT
Extended Forecast for

Zion IL

  • Today

    Today: A 20 percent chance of showers after 4pm. Cloudy, with a high near 40. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 40 °F

    Cloudy and
    Breezy then
    Slight Chance
    Showers

  • Tonight

    Tonight: Showers likely, then showers and possibly a thunderstorm after 1am. Low around 38. Breezy, with an east wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 38 °F

    Breezy.
    Showers
    Likely then
    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 64. Breezy, with an east southeast wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 64 °F

    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 1am. Mostly cloudy, with a low around 44. Breezy, with a south wind 15 to 25 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    Low: 44 °F

    Showers
    Likely and
    Breezy

  • Friday

    Friday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 52. West southwest wind 5 to 10 mph becoming east in the afternoon.

    High: 52 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 44. Chance of precipitation is 90%.

    Low: 44 °F

    Showers
    Likely then
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Mostly cloudy, with a high near 58. Chance of precipitation is 60%.

    High: 58 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 46. Breezy.

    High: 46 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Sunny

Detailed Forecast

Today
A 20 percent chance of showers after 4pm. Cloudy, with a high near 40. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
Showers likely, then showers and possibly a thunderstorm after 1am. Low around 38. Breezy, with an east wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Showers and possibly a thunderstorm. High near 64. Breezy, with an east southeast wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
Showers likely and possibly a thunderstorm before 1am. Mostly cloudy, with a low around 44. Breezy, with a south wind 15 to 25 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Friday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 52. West southwest wind 5 to 10 mph becoming east in the afternoon.
Friday Night
Showers and possibly a thunderstorm. Low around 44. Chance of precipitation is 90%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Mostly cloudy, with a high near 58. Chance of precipitation is 60%.
Saturday Night
Mostly cloudy, with a low around 34.
Sunday
Partly sunny, with a high near 46. Breezy.
Sunday Night
Mostly clear, with a low around 33.
Monday
A chance of showers. Partly sunny, with a high near 49.
Monday Night
A chance of showers. Mostly cloudy, with a low around 33.
Tuesday
Partly sunny, with a high near 41.
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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:
3:16 am CDT Apr 1, 2026
Forecast Valid:
5am CDT Apr 1, 2026-6pm CDT Apr 7, 2026
 
Forecast Discussion
 
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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