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

Severe Thunderstorms, Heavy Rain, And Flash Flooding Likely Over The Central U.S.

Strong to severe thunderstorms capable of damaging winds, large hail, and a few tornadoes will be likely this afternoon into tonight over portions of the Plains to the Midwest. Heavy rainfall will lead to flash flooding, some locally significant from Kansas to Missouri. Across the eastern U.S., much above normal temperatures can be expected. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

Overcast

78°F

26°C

Humidity 71%
Wind Speed SW 18 G 28 mph
Barometer 30.05 in (1016.5 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 21 Sep 2:53 pm CDT
Extended Forecast for

Chicago IL

Flash Flood Watch September 21, 07:00pm until September 23, 01:00am
Click here for hazard details and duration
Flash Flood Watch

  • This
    Afternoon

    This Afternoon: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Cloudy, with a high near 80. South southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Showers
    Likely

    High: 80 °F

  • Tonight

    Tonight: Periods of showers and possibly a thunderstorm. Some of the storms could produce heavy rain. Low around 69. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Heavy Rain

    Low: 69 °F

  • Sunday

    Sunday: Periods of showers and possibly a thunderstorm. Some of the storms could produce heavy rain. High near 75. South southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Heavy Rain

    High: 75 °F

  • Sunday
    Night

    Sunday Night: Periods of showers and possibly a thunderstorm, mainly before 1am. Some of the storms could produce heavy rainfall. Low around 59. Southwest wind 10 to 15 mph becoming northwest in the evening. Winds could gust as high as 25 mph. Chance of precipitation is 90%.

    Heavy Rain

    Low: 59 °F

  • Monday

    Monday: Sunny, with a high near 72. West northwest wind around 10 mph, with gusts as high as 15 mph.

    Sunny

    High: 72 °F

  • Monday
    Night

    Monday Night: Mostly clear, with a low around 57.

    Mostly Clear

    Low: 57 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 75.

    Mostly Sunny

    High: 75 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 62.

    Partly Cloudy

    Low: 62 °F

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 75.

    Chance
    T-storms

    High: 75 °F

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Cloudy, with a high near 80. South southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Periods of showers and possibly a thunderstorm. Some of the storms could produce heavy rain. Low around 69. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Sunday
Periods of showers and possibly a thunderstorm. Some of the storms could produce heavy rain. High near 75. South southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Sunday Night
Periods of showers and possibly a thunderstorm, mainly before 1am. Some of the storms could produce heavy rainfall. Low around 59. Southwest wind 10 to 15 mph becoming northwest in the evening. Winds could gust as high as 25 mph. Chance of precipitation is 90%.
Monday
Sunny, with a high near 72. West northwest wind around 10 mph, with gusts as high as 15 mph.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Partly cloudy, with a low around 62.
Wednesday
A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 75.
Wednesday Night
A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 58.
Thursday
Mostly sunny, with a high near 70.
Thursday Night
Mostly cloudy, with a low around 58.
Friday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 77.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Chicago IL
 41.84°N 87.68°W
Last Update:
2:16 pm CDT Sep 21, 2019
Forecast Valid:
3pm CDT Sep 21, 2019-6pm CDT Sep 27, 2019
 
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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