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 from the remnants of Odalys and Hurricane Polo 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. Flood Watches have been issued through Wednesday in the southwest U.S. and moderate risk outlooks have been issued today through Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

A Few Clouds

71°F

22°C

Humidity 55%
Wind Speed NE 10 mph
Barometer 30.05 in (1017.2 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 28 Sep 3:53 pm CDT
Extended Forecast for

Downers Grove IL

  • Tonight

    Tonight: Patchy dense fog after 1am. Otherwise, increasing clouds, with a low around 54. East northeast wind around 5 mph becoming calm in the evening.

    Low: 54 °F

    Mostly Clear
    then Patchy
    Dense Fog

  • Tuesday

    Tuesday: Patchy dense fog before 9am. Otherwise, mostly sunny, with a high near 76. Calm wind becoming south around 5 mph in the afternoon. Winds could gust as high as 10 mph.

    High: 76 °F

    Patchy Dense
    Fog then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 63. South wind 5 to 10 mph.

    Low: 63 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 74. South wind around 10 mph, with gusts as high as 15 mph.

    High: 74 °F

    Chance
    Showers

  • Wednesday Night

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

    Low: 67 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 73. Chance of precipitation is 90%.

    High: 73 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 58. Chance of precipitation is 70%.

    Low: 58 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers before 1pm. Partly sunny, with a high near 64.

    High: 64 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy dense fog after 1am. Otherwise, increasing clouds, with a low around 54. East northeast wind around 5 mph becoming calm in the evening.
Tuesday
Patchy dense fog before 9am. Otherwise, mostly sunny, with a high near 76. Calm wind becoming south around 5 mph in the afternoon. Winds could gust as high as 10 mph.
Tuesday Night
Mostly cloudy, with a low around 63. South wind 5 to 10 mph.
Wednesday
A 30 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 74. South wind around 10 mph, with gusts as high as 15 mph.
Wednesday Night
A 50 percent chance of showers. Cloudy, with a low around 67. South wind around 10 mph, with gusts as high as 15 mph.
Thursday
Showers and possibly a thunderstorm. High near 73. Chance of precipitation is 90%.
Thursday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 58. Chance of precipitation is 70%.
Friday
A chance of showers before 1pm. Partly sunny, with a high near 64.
Friday Night
Mostly cloudy, with a low around 52.
Saturday
A chance of showers. Partly sunny, with a high near 65.
Saturday Night
Mostly cloudy, with a low around 53.
Sunday
Partly sunny, with a high near 65.
Sunday Night
Partly cloudy, with a low around 49.
Monday
Sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
Downers Grove IL
 41.8°N 88°W
Last Update:
2:56 pm CDT Sep 28, 2026
Forecast Valid:
4pm CDT Sep 28, 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