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

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Overcast

61°F

16°C

Humidity 94%
Wind Speed Calm
Barometer 30.17 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 30 Aug 6:45 am CDT
Extended Forecast for

Downers Grove IL

  • Today

    Today: Isolated showers before 8am. Mostly cloudy, with a high near 73. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 73 °F

    Isolated
    Showers then
    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 56. Northeast wind around 5 mph.

    Low: 56 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 78. Calm wind becoming east around 5 mph in the afternoon. Winds could gust as high as 10 mph.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 57. East northeast wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.

    Low: 57 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 79. Calm wind becoming east around 5 mph in the afternoon. Winds could gust as high as 10 mph.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 72.

    High: 72 °F

    Showers
    Likely

Detailed Forecast

Today
Isolated showers before 8am. Mostly cloudy, with a high near 73. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 56. Northeast wind around 5 mph.
Sunday
Sunny, with a high near 78. Calm wind becoming east around 5 mph in the afternoon. Winds could gust as high as 10 mph.
Sunday Night
Mostly clear, with a low around 57. East northeast wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.
Labor Day
Sunny, with a high near 79. Calm wind becoming east around 5 mph in the afternoon. Winds could gust as high as 10 mph.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 72.
Wednesday Night
A chance of showers before 1am. Mostly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Downers Grove IL
 41.78°N 88.03°W
Last Update:
4:56 am CDT Aug 30, 2025
Forecast Valid:
7am CDT Aug 30, 2025-6pm CDT Sep 5, 2025
 
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