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.

Partly Cloudy

94°F

34°C

Humidity 48%
Wind Speed W 14 mph
Barometer 29.90 in (1011.2 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 2 Sep 4:53 pm CDT
Extended Forecast for

Oak Forest IL

Heat Advisory September 2, 05:22pm until September 2, 09:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory September 2, 05:22pm until September 2, 09:00pm

    NOW until 9:00pm Wed

    Heat Advisory

  • Tonight

    Low: 77 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 92. Heat index values as high as 100. West southwest wind 5 to 10 mph.

    High: 92 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 73. East southeast wind 5 to 10 mph becoming northeast after midnight. Chance of precipitation is 50%.

    Low: 73 °F

    Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 90. Heat index values as high as 98. East northeast wind around 5 mph becoming west southwest in the afternoon.

    High: 90 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Partly cloudy, with a low around 72. Northeast wind around 5 mph becoming southeast after midnight. Chance of precipitation is 40%.

    Low: 72 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.

    High: 86 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 77. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 92. Heat index values as high as 100. West southwest wind 5 to 10 mph.
Thursday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 73. East southeast wind 5 to 10 mph becoming northeast after midnight. Chance of precipitation is 50%.
Friday
A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 90. Heat index values as high as 98. East northeast wind around 5 mph becoming west southwest in the afternoon.
Friday Night
A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Partly cloudy, with a low around 72. Northeast wind around 5 mph becoming southeast after midnight. Chance of precipitation is 40%.
Saturday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Saturday Night
Partly cloudy, with a low around 69.
Sunday
Mostly sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 66.
Labor Day
Mostly sunny, with a high near 83.
Monday Night
Partly cloudy, with a low around 66.
Tuesday
Partly sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 70.
Wednesday
A chance of showers. Mostly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Oak Forest IL
 41.6°N 87.75°W
Last Update:
2:51 pm CDT Sep 2, 2026
Forecast Valid:
5pm CDT Sep 2, 2026-6pm CDT Sep 9, 2026
 
Forecast Discussion
 
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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