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.

A Few Clouds

78°F

26°C

Humidity 56%
Wind Speed S 15 G 28 mph
Barometer 29.83 in (1009.2 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 17 May 10:53 pm CDT
Extended Forecast for

Westmont IL

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms after 5am. Mostly clear, with a low around 69. South southwest wind around 15 mph, with gusts as high as 30 mph.

    Low: 69 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 80. 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 quarter and half of an inch possible.

    High: 80 °F

    T-storms
    Likely and
    Breezy

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms before 10pm, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. South southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.

    Low: 66 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 81. Breezy, with a south southwest wind 15 to 20 mph becoming west in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 80%.

    High: 81 °F

    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: A slight chance of thunderstorms before 7pm. Mostly cloudy, with a low around 50. North northwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 10%.

    Low: 50 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 48 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 10 percent chance of showers and thunderstorms after 5am. Mostly clear, with a low around 69. South southwest wind around 15 mph, with gusts as high as 30 mph.
Monday
Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 80. 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 quarter and half of an inch possible.
Monday Night
A slight chance of showers and thunderstorms before 10pm, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. South southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Tuesday
Showers and possibly a thunderstorm. High near 81. Breezy, with a south southwest wind 15 to 20 mph becoming west in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 80%.
Tuesday Night
A slight chance of thunderstorms before 7pm. Mostly cloudy, with a low around 50. North northwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 10%.
Wednesday
Mostly sunny, with a high near 61.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Mostly cloudy, with a low around 48.
Friday
Mostly cloudy, with a high near 70.
Friday Night
A chance of showers. Mostly cloudy, with a low around 53.
Saturday
Partly sunny, with a high near 75.
Saturday Night
Mostly 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:
Westmont IL
 41.8°N 87.97°W
Last Update:
9:52 pm CDT May 17, 2026
Forecast Valid:
11pm CDT May 17, 2026-6pm CDT May 24, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation