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

Chicago, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

Mostly Cloudy

77°F

25°C

Humidity 47%
Wind Speed W 10 G 22 mph
Barometer 29.94 in (1013.0 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 25 Jun 11:53 am CDT
Extended Forecast for

Westmont IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 78. West northwest wind around 10 mph, with gusts as high as 15 mph.

    High: 78 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 59. North northwest wind around 5 mph becoming east after midnight. Winds could gust as high as 10 mph.

    Low: 59 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 72. East northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 72 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 60. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 60 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 79. East northeast wind 5 to 10 mph.

    High: 79 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 88.

    High: 88 °F

    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 78. West northwest wind around 10 mph, with gusts as high as 15 mph.
Tonight
Mostly cloudy, with a low around 59. North northwest wind around 5 mph becoming east after midnight. Winds could gust as high as 10 mph.
Friday
A 30 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 72. East northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Friday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 60. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday
Mostly sunny, with a high near 79. East northeast wind 5 to 10 mph.
Saturday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65.
Sunday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 88.
Sunday Night
Partly cloudy, with a low around 74.
Monday
Mostly sunny, with a high near 93.
Monday Night
Mostly clear, with a low around 77.
Tuesday
Sunny and hot, with a high near 95.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
Sunny and hot, with a high near 95.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Westmont IL
 41.8°N 87.97°W
Last Update:
8:21 am CDT Jun 25, 2026
Forecast Valid:
12pm CDT Jun 25, 2026-6pm CDT Jul 1, 2026
 
Forecast Discussion
 
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Additional Resources

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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