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

80°F

27°C

Humidity 58%
Wind Speed W 12 mph
Barometer 30.00 in (1014.9 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 18 Aug 11:53 am CDT
Extended Forecast for

Chicago IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 82. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 82 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 3am. Mostly cloudy, with a low around 67. Southwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Showers
    Likely then
    Chance
    T-storms

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 77. West wind 5 to 10 mph becoming east northeast in the afternoon.

    High: 77 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 64. East northeast wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 78. Calm wind becoming east around 5 mph in the afternoon.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers. Partly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 82. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Showers and thunderstorms likely, mainly before 3am. Mostly cloudy, with a low around 67. Southwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 20 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 77. West wind 5 to 10 mph becoming east northeast in the afternoon.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 64. East northeast wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 78. Calm wind becoming east around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 64.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80.
Friday Night
A chance of showers. Partly cloudy, with a low around 66.
Saturday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 64.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Partly cloudy, with a low around 63.
Monday
Mostly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chicago IL
 41.84°N 87.68°W
Last Update:
11:41 am CDT Aug 18, 2026
Forecast Valid:
12pm CDT Aug 18, 2026-6pm CDT Aug 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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