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.

Mostly Cloudy

77°F

25°C

Humidity 62%
Wind Speed SW 14 G 31 mph
Barometer 29.85 in (1009.7 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 18 May 3:53 pm CDT
Extended Forecast for

Westchester IL

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 69. South southwest wind around 15 mph, with gusts as high as 20 mph.

    Low: 69 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly between 1pm and 5pm. Increasing clouds, with a high near 82. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 82 °F

    Breezy.
    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 10 percent chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 50. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 50 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 58. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 58 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 44. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 44 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy

  • Friday

    Friday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 65.

    High: 65 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance
    Showers

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 69. South southwest wind around 15 mph, with gusts as high as 20 mph.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly between 1pm and 5pm. Increasing clouds, with a high near 82. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
A 10 percent chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 50. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 58. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 44. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 62.
Thursday Night
Mostly cloudy, with a low around 48.
Friday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 65.
Friday Night
A chance of showers. Mostly cloudy, with a low around 52.
Saturday
Mostly cloudy, with a high near 73.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 56.
Sunday
Partly sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 58.
Memorial Day
Partly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Westchester IL
 41.84°N 87.88°W
Last Update:
3:26 pm CDT May 18, 2026
Forecast Valid:
4pm CDT May 18, 2026-6pm CDT May 25, 2026
 
Forecast Discussion
 
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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