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

66°F

19°C

Humidity 90%
Wind Speed SW 12 G 22 mph
Barometer 29.88 in (1011.0 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 13 Apr 7:51 am CDT
Extended Forecast for

Zion IL

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 74. West southwest wind around 15 mph, with gusts as high as 20 mph.

    High: 74 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 58. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 58 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 78. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 78 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms, mainly before 4am, then showers likely and possibly a thunderstorm after 4am. Low around 52. Southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    Low: 52 °F

    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 62. West wind 10 to 15 mph becoming south in the morning. Chance of precipitation is 80%.

    High: 62 °F

    Showers
    Likely then
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 53. Chance of precipitation is 80%.

    Low: 53 °F

    T-storms then
    Showers

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 70.

    High: 70 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 74. West southwest wind around 15 mph, with gusts as high as 20 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 58. South wind around 15 mph, with gusts as high as 25 mph.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 78. Southwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday Night
Showers and thunderstorms, mainly before 4am, then showers likely and possibly a thunderstorm after 4am. Low around 52. Southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Wednesday
Showers and possibly a thunderstorm. High near 62. West wind 10 to 15 mph becoming south in the morning. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 53. Chance of precipitation is 80%.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 70.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Partly sunny, with a high near 65.
Friday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 50.
Saturday
A chance of showers. Partly sunny, with a high near 63.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 52.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Zion IL
 42.45°N 87.81°W
Last Update:
5:46 am CDT Apr 13, 2026
Forecast Valid:
8am CDT Apr 13, 2026-6pm CDT Apr 19, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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