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

Tropical Moisture Will Bring Heavy to Excessive Rainfall with Possible Flooding This Week

Tropical moisture will surge over the southwest into the central U.S. this week with several days of heavy to excessive rainfall which may bring limited to considerable flooding. Isolated severe thunderstorm gusts and a couple of tornadoes will be possible from southeast New Mexico into west Texas. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

Fair

58°F

14°C

Humidity 97%
Wind Speed Calm
Barometer 30.05 in (1017.2 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 29 Sep 1:53 am CDT
Extended Forecast for

Chicago IL

  • Overnight

    Overnight: Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 75. Calm wind becoming south southwest around 5 mph in the morning. Winds could gust as high as 10 mph.

    High: 75 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 64. South wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 64 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers likely, mainly between noon and 3pm. Cloudy, with a high near 71. South southwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%.

    High: 71 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers. Cloudy, with a low around 67. South southwest wind around 10 mph, with gusts as high as 15 mph.

    Low: 67 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers likely, then showers and possibly a thunderstorm after 1pm. High near 73. Chance of precipitation is 80%.

    High: 73 °F

    Showers

  • Thursday Night

    Thursday Night: Showers. Low around 61. Chance of precipitation is 90%.

    Low: 61 °F

    Showers

  • Friday

    Friday: A chance of showers. Mostly cloudy, with a high near 63.

    High: 63 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 56. Calm wind.
Tuesday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 75. Calm wind becoming south southwest around 5 mph in the morning. Winds could gust as high as 10 mph.
Tuesday Night
Mostly cloudy, with a low around 64. South wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday
Showers likely, mainly between noon and 3pm. Cloudy, with a high near 71. South southwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%.
Wednesday Night
A 50 percent chance of showers. Cloudy, with a low around 67. South southwest wind around 10 mph, with gusts as high as 15 mph.
Thursday
Showers likely, then showers and possibly a thunderstorm after 1pm. High near 73. Chance of precipitation is 80%.
Thursday Night
Showers. Low around 61. Chance of precipitation is 90%.
Friday
A chance of showers. Mostly cloudy, with a high near 63.
Friday Night
Partly cloudy, with a low around 54.
Saturday
Mostly sunny, with a high near 62.
Saturday Night
Mostly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 63.
Sunday Night
Mostly clear, with a low around 51.
Monday
Sunny, with a high near 60.
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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 29, 2026
Forecast Valid:
2am CDT Sep 29, 2026-6pm CDT Oct 5, 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