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.

Partly Cloudy

75°F

24°C

Humidity 55%
Wind Speed S 20 G 28 mph
Barometer 29.83 in (1009.1 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 18 May 3:53 am CDT
Extended Forecast for

Westchester IL

  • Overnight

    Overnight: A 30 percent chance of showers after 5am. Partly cloudy, with a low around 70. South southwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 70 °F

    Chance
    Showers

  • Monday

    Monday: Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 81. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Showers
    Likely and
    Breezy

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 68. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 68 °F

    Slight Chance
    T-storms then
    Chance
    T-storms and
    Breezy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 81. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

    High: 81 °F

    Breezy.
    Chance
    T-storms then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers before 7pm. Mostly cloudy, with a low around 51. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 51 °F

    Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of showers after 5am. Partly cloudy, with a low around 70. South southwest wind around 15 mph, with gusts as high as 25 mph.
Monday
Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 81. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
A 50 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 68. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 81. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Tuesday Night
A 30 percent chance of showers before 7pm. Mostly cloudy, with a low around 51. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, with a high near 61.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
Mostly cloudy, with a low around 49.
Friday
A chance of showers before 1pm. Mostly cloudy, with a high near 69.
Friday Night
Mostly cloudy, with a low around 54.
Saturday
Partly sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
Mostly sunny, with a high near 81.
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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:
3:51 am CDT May 18, 2026
Forecast Valid:
4am CDT May 18, 2026-6pm CDT May 24, 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