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.

Light Rain

37°F

3°C

Humidity 73%
Wind Speed SE 8 mph
Barometer 30.31 in (1027.3 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 8 Apr 3:51 am CDT
Extended Forecast for

Zion IL

  • Overnight

    Overnight: A 40 percent chance of showers. Cloudy, with a steady temperature around 36. South southeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 36 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 61. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph.

    High: 61 °F

    Breezy.
    Chance
    Showers then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Showers, mainly before 4am. Low around 47. Breezy, with a south wind 15 to 25 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 47 °F

    Breezy.
    Chance
    Showers then
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 61. West wind around 10 mph, with gusts as high as 20 mph.

    High: 61 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers, mainly after 1am. Low around 41. East wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 90%.

    Low: 41 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: A 40 percent chance of showers before 1pm. Mostly cloudy, with a high near 46.

    High: 46 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 1am. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
A 40 percent chance of showers. Cloudy, with a steady temperature around 36. South southeast wind around 15 mph, with gusts as high as 25 mph.
Wednesday
A 30 percent chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 61. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph.
Wednesday Night
Showers, mainly before 4am. Low around 47. Breezy, with a south wind 15 to 25 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Mostly sunny, with a high near 61. West wind around 10 mph, with gusts as high as 20 mph.
Thursday Night
Showers, mainly after 1am. Low around 41. East wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 90%.
Friday
A 40 percent chance of showers before 1pm. Mostly cloudy, with a high near 46.
Friday Night
Partly cloudy, with a low around 37.
Saturday
Mostly sunny, with a high near 48.
Saturday Night
A chance of showers after 1am. Mostly cloudy, with a low around 44.
Sunday
A chance of showers. Mostly cloudy, with a high near 73.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 58.
Monday
A chance of showers. Mostly cloudy, with a high near 74.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 47.
Tuesday
Showers likely. Mostly cloudy, with a high near 61.
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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:
3:36 am CDT Apr 8, 2026
Forecast Valid:
4am CDT Apr 8, 2026-6pm CDT Apr 14, 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