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

Chicago, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

Light Rain

59°F

15°C

Humidity 87%
Wind Speed W 17 G 31 mph
Barometer 29.80 in (1009.1 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 15 Oct 11:53 pm CDT
Extended Forecast for

Summit IL

  • Overnight

    Overnight: A 20 percent chance of showers before 1am. Cloudy, with a low around 51. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 51 °F

    Slight Chance
    Showers and
    Breezy

  • Friday

    Friday: Showers likely, mainly between noon and 4pm. Mostly cloudy, with a high near 54. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 54 °F

    Mostly Cloudy
    then Showers
    Likely and
    Breezy

  • Friday Night

    Friday Night: A 30 percent chance of showers before 7pm. Partly cloudy, with a low around 38. Breezy, with a north northwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 38 °F

    Chance
    Showers and
    Breezy then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 56. North northwest wind around 5 mph becoming southwest in the afternoon. Winds could gust as high as 10 mph.

    High: 56 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40. South southwest wind 5 to 10 mph.

    Low: 40 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers before 1am. Cloudy, with a low around 51. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Friday
Showers likely, mainly between noon and 4pm. Mostly cloudy, with a high near 54. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A 30 percent chance of showers before 7pm. Partly cloudy, with a low around 38. Breezy, with a north northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Saturday
Sunny, with a high near 56. North northwest wind around 5 mph becoming southwest in the afternoon. Winds could gust as high as 10 mph.
Saturday Night
Mostly clear, with a low around 40. South southwest wind 5 to 10 mph.
Sunday
Sunny, with a high near 63.
Sunday Night
Mostly clear, with a low around 44.
Monday
Mostly sunny, with a high near 68.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Sunny, with a high near 70.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Sunny, with a high near 71.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Mostly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Summit IL
 41.8°N 87.83°W
Last Update:
11:36 pm CDT Oct 15, 2026
Forecast Valid:
12am CDT Oct 16, 2026-6pm CDT Oct 22, 2026
 
Forecast Discussion
 
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Additional Resources

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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