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

Hazardous Weather Conditions

Current conditions at

Chicago, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

A Few Clouds

84°F

29°C

Humidity 65%
Wind Speed S 12 G 20 mph
Barometer 29.92 in (1012.0 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 15 Jul 9:53 pm CDT
Extended Forecast for

Westchester IL

  • Tonight

    Tonight: A 20 percent chance of showers before 4am. Mostly cloudy, with a low around 74. South wind around 5 mph becoming calm in the evening.

    Low: 74 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 91. Heat index values as high as 99. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 91 °F

    Partly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly between 7pm and 1am. Mostly cloudy, with a low around 70. West wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 70 °F

    T-storms
    Likely

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 77. West northwest wind 10 to 15 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.

    High: 77 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 62. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 62 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely. Mostly cloudy, with a high near 85.

    High: 85 °F

    T-storms
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 20 percent chance of showers before 4am. Mostly cloudy, with a low around 74. South wind around 5 mph becoming calm in the evening.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 91. Heat index values as high as 99. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Showers and thunderstorms likely, mainly between 7pm and 1am. Mostly cloudy, with a low around 70. West wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 77. West northwest wind 10 to 15 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 62. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 79.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66.
Saturday
Showers and thunderstorms likely. Mostly cloudy, with a high near 85.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 67.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 85.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Tuesday
Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Westchester IL
 41.84°N 87.88°W
Last Update:
9:07 pm CDT Jul 15, 2025
Forecast Valid:
10pm CDT Jul 15, 2025-6pm CDT Jul 22, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation