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.

Overcast

44°F

7°C

Humidity 49%
Wind Speed S 5 mph
Barometer 30.14 in (1021.1 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 25 Mar 4:53 am CDT
Extended Forecast for

Summit IL

  • Today

    Today: Mostly sunny, with a high near 71. South southwest wind 5 to 15 mph, with gusts as high as 30 mph.

    High: 71 °F

    Mostly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 4am. Mostly cloudy, with a low around 55. South southwest wind 5 to 10 mph.

    Low: 55 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Showers and thunderstorms likely after 1pm. Increasing clouds, with a high near 79. Breezy, with a south southwest wind 5 to 10 mph becoming north 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 79 °F

    Mostly Sunny
    then T-storms
    Likely and
    Breezy

  • Thursday Night

    Thursday Night: A 50 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 32. Breezy, with a north northeast wind around 20 mph, with gusts as high as 30 mph.

    Low: 32 °F

    Breezy.
    Chance
    Showers then
    Slight Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 42. North wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 42 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 71. South southwest wind 5 to 15 mph, with gusts as high as 30 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 4am. Mostly cloudy, with a low around 55. South southwest wind 5 to 10 mph.
Thursday
Showers and thunderstorms likely after 1pm. Increasing clouds, with a high near 79. Breezy, with a south southwest wind 5 to 10 mph becoming north 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A 50 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 32. Breezy, with a north northeast wind around 20 mph, with gusts as high as 30 mph.
Friday
Partly sunny, with a high near 42. North wind 10 to 15 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 29.
Saturday
Sunny, with a high near 52.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Partly sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 48.
Monday
Mostly sunny, with a high near 72.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 52.
Tuesday
A chance of showers. Mostly cloudy, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Summit IL
 41.8°N 87.83°W
Last Update:
4:26 am CDT Mar 25, 2026
Forecast Valid:
5am CDT Mar 25, 2026-6pm CDT Mar 31, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation