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 the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Sunday could bring areas of flooding to parts of the upper Midwest, central Great Lakes, southern New England and Virginia/North Carolina tidewater region. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

Mostly Cloudy

68°F

20°C

Humidity 78%
Wind Speed NE 12 mph
Barometer 30.23 in (1022.9 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 18 Sep 2:53 am CDT
Extended Forecast for

4 Miles ENE Chicago IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 65. Northeast wind around 10 mph.

    Low: 65 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 70. East northeast wind around 15 mph.

    High: 70 °F

    Partly Sunny

  • Friday Night

    Friday Night: Showers and thunderstorms likely, mainly after 5am. Mostly cloudy, with a low around 60. East southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 60 °F

    Mostly Cloudy
    then T-storms
    Likely

  • Saturday

    Saturday: Showers and thunderstorms, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. High near 74. South southeast wind 10 to 15 mph. Chance of precipitation is 100%.

    High: 74 °F

    T-storms then
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 62. North northeast wind around 10 mph. Chance of precipitation is 90%.

    Low: 62 °F

    Showers

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 69. Breezy. Chance of precipitation is 70%.

    High: 69 °F

    Showers
    Likely and
    Breezy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Breezy.

    Low: 57 °F

    Chance
    Showers and
    Breezy

  • Monday

    Monday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 65. Breezy.

    High: 65 °F

    Showers
    Likely and
    Breezy

  • Monday Night

    Monday Night: A chance of showers. Cloudy, with a low around 55.

    Low: 55 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 65. Northeast wind around 10 mph.
Friday
Partly sunny, with a high near 70. East northeast wind around 15 mph.
Friday Night
Showers and thunderstorms likely, mainly after 5am. Mostly cloudy, with a low around 60. East southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers and thunderstorms, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. High near 74. South southeast wind 10 to 15 mph. Chance of precipitation is 100%.
Saturday Night
Showers and possibly a thunderstorm. Low around 62. North northeast wind around 10 mph. Chance of precipitation is 90%.
Sunday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 69. Breezy. Chance of precipitation is 70%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Breezy.
Monday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 65. Breezy.
Monday Night
A chance of showers. Cloudy, with a low around 55.
Tuesday
A chance of showers. Mostly cloudy, with a high near 64.
Tuesday Night
Mostly cloudy, with a low around 55.
Wednesday
Partly sunny, with a high near 65.
Wednesday Night
Mostly cloudy, with a low around 55.
Thursday
Partly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Chicago IL
 41.86°N 87.62°W
Last Update:
2:41 am CDT Sep 18, 2026
Forecast Valid:
3am CDT Sep 18, 2026-6pm CDT Sep 24, 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