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Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

36°F

2°C

Humidity 70%
Wind Speed SW 7 mph
Barometer 30.07 in (1019.1 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 19 Apr 6:51 am CDT
Extended Forecast for

Zion IL

Frost Advisory April 19, 06:57am until April 19, 09:00am
Freeze Warning April 20, 12:00am until April 20, 09:00am
Click here for hazard details and duration
...
Freeze Warning
  •  
    Frost Advisory April 19, 06:57am until April 19, 09:00am

    NOW until 9:00am Sun

    Frost Advisory

  • Today

    High: 46 °F

    Mostly Sunny
    then Chance
    Showers

  • Tonight

    Tonight: A 10 percent chance of showers before 7pm. Widespread frost, mainly after 1am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 32. North wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 32 °F

    Slight Chance
    Showers then
    Frost

  • Monday

    Monday: Widespread frost before 8am. Otherwise, sunny, with a high near 44. North northwest wind 5 to 10 mph becoming south southeast in the afternoon.

    High: 44 °F

    Frost then
    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 41. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 69. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 69 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

Detailed Forecast

Today
A 30 percent chance of showers, mainly after 1pm. Increasing clouds, with a high near 46. West southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
Tonight
A 10 percent chance of showers before 7pm. Widespread frost, mainly after 1am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 32. North wind 5 to 10 mph, with gusts as high as 15 mph.
Monday
Widespread frost before 8am. Otherwise, sunny, with a high near 44. North northwest wind 5 to 10 mph becoming south southeast in the afternoon.
Monday Night
Mostly cloudy, with a low around 41. South wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 69. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 45.
Wednesday
Sunny, with a high near 55.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 70.
Thursday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 56.
Friday
Showers likely. Mostly cloudy, with a high near 69.
Friday Night
A chance of showers. Mostly cloudy, with a low around 45.
Saturday
Partly 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:
2:56 am CDT Apr 19, 2026
Forecast Valid:
6am CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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