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

81°F

27°C

Humidity 45%
Wind Speed SW 12 mph
Barometer 29.89 in (1011.1 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 16 May 1:53 pm CDT
Extended Forecast for

Westchester IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 85. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 85 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 62. South southwest wind 5 to 10 mph.

    Low: 62 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 10am. Partly sunny, with a high near 86. Breezy, with an east southeast wind 5 to 10 mph becoming south 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 86 °F

    Slight Chance
    T-storms then
    Partly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 70. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 70 °F

    Partly Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 84. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.

    High: 84 °F

    Breezy.
    Chance
    Showers then
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.

    Low: 69 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 84. Breezy. Chance of precipitation is 70%.

    High: 84 °F

    Breezy.
    Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers before 1am. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 85. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 62. South southwest wind 5 to 10 mph.
Sunday
A 20 percent chance of showers and thunderstorms before 10am. Partly sunny, with a high near 86. Breezy, with an east southeast wind 5 to 10 mph becoming south 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
Partly cloudy, with a low around 70. South wind around 15 mph, with gusts as high as 25 mph.
Monday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 84. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.
Monday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 84. Breezy. Chance of precipitation is 70%.
Tuesday Night
A chance of showers before 1am. Mostly cloudy, with a low around 52.
Wednesday
Partly sunny, with a high near 63.
Wednesday Night
Mostly cloudy, with a low around 45.
Thursday
Mostly sunny, with a high near 62.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Partly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Westchester IL
 41.84°N 87.91°W
Last Update:
1:21 pm CDT May 16, 2026
Forecast Valid:
2pm CDT May 16, 2026-6pm CDT May 22, 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