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.

Mostly Cloudy

86°F

30°C

Humidity 61%
Wind Speed SW 10 mph
Barometer 29.96 in (1013.2 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 2 Sep 9:53 am CDT
Extended Forecast for

Chicago IL

Heat Advisory September 2, 12:00pm until September 2, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Mostly sunny, with a high near 94. Heat index values as high as 102. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 94 °F

    Mostly Sunny

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 4am. Partly cloudy, with a low around 76. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 76 °F

    Partly Cloudy
    then Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. Heat index values as high as 98. Southwest wind around 5 mph becoming north northeast in the afternoon.

    High: 90 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 74. East southeast wind around 5 mph.

    Low: 74 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 85. East northeast wind around 5 mph.

    High: 85 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 71.

    Low: 71 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 83.

    High: 83 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers after 1am. Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 82.

    High: 82 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 94. Heat index values as high as 102. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 4am. Partly cloudy, with a low around 76. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. Heat index values as high as 98. Southwest wind around 5 mph becoming north northeast in the afternoon.
Thursday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 74. East southeast wind around 5 mph.
Friday
A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 85. East northeast wind around 5 mph.
Friday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 71.
Saturday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 83.
Saturday Night
A chance of showers after 1am. Partly cloudy, with a low around 70.
Sunday
Partly sunny, with a high near 82.
Sunday Night
A chance of showers after 1am. Mostly cloudy, with a low around 68.
Labor Day
Partly sunny, with a high near 81.
Monday Night
Mostly cloudy, with a low around 67.
Tuesday
Partly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chicago IL
 41.84°N 87.68°W
Last Update:
9:56 am CDT Sep 2, 2026
Forecast Valid:
10am CDT Sep 2, 2026-6pm CDT Sep 8, 2026
 
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Additional Resources

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Chance of Precipitation