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.

Partly Cloudy

27°C

80°F

Humidity 69%
Wind Speed SW 13 km/h
Barometer 1012.7 mb (29.94 in)
Dewpoint 21°C (69°F)
Visibility 16 km
Heat Index28°C (83°F)
Last update 12 Jul 9:53 pm CDT
Extended Forecast for

Westmont IL

  • Tonight

    Tonight: Mostly clear, with a low around 19. West northwest wind around 10 km/h.

    Low: 19 °C

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 29. Northwest wind 5 to 15 km/h becoming west southwest in the afternoon.

    High: 29 °C

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 19. West northwest wind 5 to 10 km/h becoming southwest after midnight.

    Low: 19 °C

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 32. Southwest wind 10 to 15 km/h, with gusts as high as 25 km/h.

    High: 32 °C

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 22. South wind 5 to 10 km/h.

    Low: 22 °C

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 32.

    High: 32 °C

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 22.

    Low: 22 °C

    Slight Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 31.

    High: 31 °C

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 21.

    Low: 21 °C

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 19. West northwest wind around 10 km/h.
Sunday
Mostly sunny, with a high near 29. Northwest wind 5 to 15 km/h becoming west southwest in the afternoon.
Sunday Night
Mostly clear, with a low around 19. West northwest wind 5 to 10 km/h becoming southwest after midnight.
Monday
Sunny, with a high near 32. Southwest wind 10 to 15 km/h, with gusts as high as 25 km/h.
Monday Night
Mostly clear, with a low around 22. South wind 5 to 10 km/h.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 32.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 22.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 31.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 21.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 29.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 19.
Friday
Partly sunny, with a high near 27.
Friday Night
Mostly cloudy, with a low around 18.
Saturday
Partly sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Westmont IL
 41.8°N 87.97°W
Last Update:
7:41 pm CDT Jul 12, 2025
Forecast Valid:
10pm CDT Jul 12, 2025-6pm CDT Jul 19, 2025
 
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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