On July 7, 2015, NWS implemented changes to the icons depicted on all of its point-forecast pages. Changes include new icon images with increased clarity, 6-hour increments for rapidly changing weather and new color blocks to highlight forecast hazards.

A page depicting all of the new icon images can be accessed here: www.weather.gov/forecast-icons

Changes to the icons were based on analysis of 6,700 public comments collected in 2014. Also, many of these changes are based on the results of a research project led by the National Center for Atmospheric Research.

Users are encouraged to continue to provide comments regarding these changes via email at icons@noaa.gov. NWS will continue to analyze incoming feedback and refine the icons as necessary. Any substantial change to the icons will be facilitated through the NWS public comment/review process.

Heat Wave in Central U.S.

Dangerous heat will continue in the Nation's mid-section on Tuesday. Combined with high humidity, this will lead to Heat Index temperatures ranging from 100 to 110 degrees Fahrenheit across parts of the Plains and mid-South. Heat Advisories and Excessive Heat Warnings are in effect. If you must be outside, slow down and drink plenty of water.
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Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

67°F

19°C

Humidity 97%
Wind Speed Calm
Barometer 30.01 in (1015.1 mb)
Dewpoint 66°F (19°C)
Visibility 8.00 mi
Last update 27 Jul 11:55 pm CDT
Extended Forecast for

Zion IL

  • Overnight

    Overnight: Partly cloudy, with a low around 66. East northeast wind around 5 mph becoming calm.

    Partly Cloudy

    Low: 66 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82. Light east southeast wind increasing to 5 to 10 mph in the morning.

    Mostly Sunny

    High: 82 °F

  • Tuesday
    Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms, mainly after 11pm.  Increasing clouds, with a low around 72. Southeast wind 5 to 10 mph becoming south southwest after midnight.

    Chance
    T-storms

    Low: 72 °F

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms before 2pm.  Cloudy through mid morning, then gradual clearing, with a high near 83. South southwest wind 10 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.

    Chance
    T-storms

    High: 83 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 63. West wind 10 to 15 mph.

    Mostly Clear

    Low: 63 °F

  • Thursday

    Thursday: Sunny, with a high near 84.

    Sunny

    High: 84 °F

  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 66.

    Mostly Clear

    Low: 66 °F

  • Friday

    Friday: Sunny, with a high near 85.

    Sunny

    High: 85 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 65.

    Partly Cloudy

    Low: 65 °F

Detailed Forecast

Overnight
Partly cloudy, with a low around 66. East northeast wind around 5 mph becoming calm.
Tuesday
Mostly sunny, with a high near 82. Light east southeast wind increasing to 5 to 10 mph in the morning.
Tuesday Night
A 50 percent chance of showers and thunderstorms, mainly after 11pm. Increasing clouds, with a low around 72. Southeast wind 5 to 10 mph becoming south southwest after midnight.
Wednesday
A 50 percent chance of showers and thunderstorms before 2pm. Cloudy through mid morning, then gradual clearing, with a high near 83. South southwest wind 10 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 63. West wind 10 to 15 mph.
Thursday
Sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 66.
Friday
Sunny, with a high near 85.
Friday Night
Partly cloudy, with a low around 65.
Saturday
A slight chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 84.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 83.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 80.
  Click Map For Forecast
Point Forecast:
Zion IL
 42.45°N 87.84°W
12:16 am CDT Jul 28, 2015
1am CDT Jul 28, 2015-6pm CDT Aug 3, 2015
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database