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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, 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.

Overcast

68°F

20°C

Humidity 93%
Wind Speed N 3 mph
Barometer 30.21 in (1022.4 mb)
Dewpoint 66°F (19°C)
Visibility 9.00 mi
Last update 17 Sep 2:53 am CDT
Extended Forecast for

Chicago IL

  • Overnight

    Overnight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 67. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers and thunderstorms likely before 11am, then a slight chance of showers between 11am and noon. Mostly cloudy, with a high near 75. Calm wind becoming north northeast around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Showers
    Likely then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 66. Northeast wind 5 to 10 mph.

    Low: 66 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 72. East wind around 10 mph, with gusts as high as 15 mph.

    High: 72 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. East wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%.

    Low: 64 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 80%.

    High: 81 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 65. Chance of precipitation is 80%.

    Low: 65 °F

    Showers

  • Sunday

    Sunday: A chance of showers. Mostly cloudy, with a high near 70.

    High: 70 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    Showers

Detailed Forecast

Overnight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 67. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers and thunderstorms likely before 11am, then a slight chance of showers between 11am and noon. Mostly cloudy, with a high near 75. Calm wind becoming north northeast around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Mostly cloudy, with a low around 66. Northeast wind 5 to 10 mph.
Friday
Mostly cloudy, with a high near 72. East wind around 10 mph, with gusts as high as 15 mph.
Friday Night
A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. East wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%.
Saturday
Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 80%.
Saturday Night
Showers and possibly a thunderstorm. Low around 65. Chance of precipitation is 80%.
Sunday
A chance of showers. Mostly cloudy, with a high near 70.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 58.
Monday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 66.
Monday Night
Mostly cloudy, with a low around 57.
Tuesday
Partly sunny, with a high near 67.
Tuesday Night
Mostly cloudy, with a low around 58.
Wednesday
Mostly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chicago IL
 41.84°N 87.68°W
Last Update:
1:21 am CDT Sep 17, 2026
Forecast Valid:
3am CDT Sep 17, 2026-6pm CDT Sep 23, 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