National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Flooding Possible in the Southwest U.S.; Coastal Storm to Impact the East

Heavy to excessive rainfall is expected today into Wednesday over New Mexico into far west Texas. Flash flooding and debris flows in wildfire burn areas will be possible. A strong coastal storm will develop off the Mid-Atlantic coast Wednesday, intensifying toward southern New England this weekend. Significant coastal flooding, strong rip currents, and beach erosion from high surf expected. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Overcast

60°F

16°C

Humidity 75%
Wind Speed E 12 mph
Barometer 30.33 in (1026.6 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 23 Sep 12:51 am CDT
Extended Forecast for

Zion IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 57. East northeast wind around 15 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 64. East northeast wind around 15 mph, with gusts as high as 20 mph.

    High: 64 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Cloudy, then gradual clearing toward daybreak, with a low around 55. East wind 10 to 15 mph.

    Low: 55 °F

    Clearing Late

  • Thursday

    Thursday: Mostly sunny, with a high near 65. East wind 10 to 15 mph.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 54. East northeast wind around 5 mph becoming southeast after midnight.

    Low: 54 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 57. East northeast wind around 15 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, with a high near 64. East northeast wind around 15 mph, with gusts as high as 20 mph.
Wednesday Night
Cloudy, then gradual clearing toward daybreak, with a low around 55. East wind 10 to 15 mph.
Thursday
Mostly sunny, with a high near 65. East wind 10 to 15 mph.
Thursday Night
Mostly cloudy, with a low around 54. East northeast wind around 5 mph becoming southeast after midnight.
Friday
Sunny, with a high near 63.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Mostly cloudy, with a low around 53.
Sunday
Mostly cloudy, with a high near 66.
Sunday Night
Mostly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 69.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
A chance of showers. Partly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Zion IL
 42.45°N 87.84°W
Last Update:
10:46 pm CDT Sep 22, 2026
Forecast Valid:
12am CDT Sep 23, 2026-6pm CDT Sep 29, 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