National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat and Possible Flooding This Week

Hot temperatures and high humidity are forecast to continue across much of east Texas into the mid-Mississippi Valley through this week. Heavy to excessive rainfall occurring at times through Friday could bring areas of flooding across parts of the central Plains into the upper Midwest and Four Corners states. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

Mostly Cloudy

78°F

26°C

Humidity 67%
Wind Speed SW 12 mph
Barometer 30.04 in (1016.5 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 15 Sep 11:53 am CDT
Extended Forecast for

Chicago IL

  • This Afternoon

    This Afternoon: Scattered showers and thunderstorms, mainly before 3pm. Partly sunny, with a high near 80. Southwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 50%.

    High: 80 °F

    Scattered
    Showers

  • Tonight

    Tonight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 66. North northeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 50%.

    Low: 66 °F

    Scattered
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers, mainly before 4pm. Mostly cloudy, with a high near 72. Northeast wind 5 to 10 mph.

    High: 72 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. East northeast wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph. Chance of precipitation is 60%.

    Low: 66 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: A chance of showers and thunderstorms before 4pm, then a slight chance of showers. Mostly cloudy, with a high near 76. South southwest wind 5 to 10 mph becoming north northeast in the afternoon. Chance of precipitation is 50%.

    High: 76 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 65.

    Low: 65 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers, mainly before 1pm. Partly sunny, with a high near 75.

    High: 75 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers after 1am. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms, mainly before 3pm. Partly sunny, with a high near 80. Southwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 50%.
Tonight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 66. North northeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 50%.
Wednesday
A 40 percent chance of showers, mainly before 4pm. Mostly cloudy, with a high near 72. Northeast wind 5 to 10 mph.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. East northeast wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph. Chance of precipitation is 60%.
Thursday
A chance of showers and thunderstorms before 4pm, then a slight chance of showers. Mostly cloudy, with a high near 76. South southwest wind 5 to 10 mph becoming north northeast in the afternoon. Chance of precipitation is 50%.
Thursday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 65.
Friday
A 30 percent chance of showers, mainly before 1pm. Partly sunny, with a high near 75.
Friday Night
A chance of showers after 1am. Mostly cloudy, with a low around 66.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81.
Saturday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 65.
Sunday
A chance of showers. Mostly cloudy, with a high near 73.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 60.
Monday
Partly sunny, with a high near 69.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chicago IL
 41.84°N 87.68°W
Last Update:
9:06 am CDT Sep 15, 2026
Forecast Valid:
12pm CDT Sep 15, 2026-6pm CDT Sep 21, 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