Hazardous Weather Conditions

Current conditions at

Chicago, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

Fair

75°F

24°C

Humidity 62%
Wind Speed Calm
Barometer 30.07 in (1017.1 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 15 Jul 1:53 am CDT
Extended Forecast for

Summit IL

  • Overnight

    Overnight: Mostly clear, with a low around 70. South southeast wind around 5 mph becoming calm.

    Low: 70 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 91. Light south wind increasing to 5 to 10 mph in the morning.

    High: 91 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 74. South wind around 5 mph, with gusts as high as 10 mph.

    Low: 74 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 91. Heat index values as high as 99. Southwest wind 5 to 10 mph.

    High: 91 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 71. Southwest wind around 5 mph, with gusts as high as 10 mph.

    Low: 71 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms, mainly after 1pm.  Mostly cloudy, with a high near 81.

    High: 81 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 1am.  Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    T-storms

  • Friday

    Friday: Partly sunny, with a high near 81.

    High: 81 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 70. South southeast wind around 5 mph becoming calm.
Tuesday
Mostly sunny, with a high near 91. Light south wind increasing to 5 to 10 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 74. South wind around 5 mph, with gusts as high as 10 mph.
Wednesday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. Heat index values as high as 99. Southwest wind 5 to 10 mph.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Southwest wind around 5 mph, with gusts as high as 10 mph.
Thursday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 81.
Thursday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 64.
Friday
Partly sunny, with a high near 81.
Friday Night
Partly cloudy, with a low around 66.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 85.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Summit IL
 41.8°N 87.83°W
12:57 am CDT Jul 15, 2025
2am CDT Jul 15, 2025-6pm CDT Jul 21, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database