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.

Mostly Cloudy

69°F

21°C

Humidity 44%
Wind Speed SW 14 G 23 mph
Barometer 29.62 in (1002.5 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 21 Mar 11:53 pm CDT
Extended Forecast for

Summit Argo IL

  • Overnight

    Overnight: Partly cloudy, with a low around 46. Southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers after 10am. Mostly cloudy, with a temperature falling to around 39 by 5pm. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 47 °F⇓

    Slight Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 30. Blustery, with a north wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 30 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 45. North wind around 5 mph, with gusts as high as 15 mph.

    High: 45 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32. East northeast wind around 5 mph becoming south after midnight. Winds could gust as high as 10 mph.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 55.

    High: 55 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 56.

    High: 56 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 46. Southwest wind around 10 mph, with gusts as high as 20 mph.
Sunday
A 20 percent chance of showers after 10am. Mostly cloudy, with a temperature falling to around 39 by 5pm. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly cloudy, with a low around 30. Blustery, with a north wind 10 to 20 mph, with gusts as high as 30 mph.
Monday
Mostly sunny, with a high near 45. North wind around 5 mph, with gusts as high as 15 mph.
Monday Night
Partly cloudy, with a low around 32. East northeast wind around 5 mph becoming south after midnight. Winds could gust as high as 10 mph.
Tuesday
Mostly cloudy, with a high near 55.
Tuesday Night
Mostly cloudy, with a low around 41.
Wednesday
Mostly cloudy, with a high near 56.
Wednesday Night
Mostly cloudy, with a low around 47.
Thursday
A chance of showers after 1pm. Partly sunny, with a high near 64.
Thursday Night
Mostly cloudy, with a low around 34.
Friday
Partly sunny, with a high near 45.
Friday Night
Partly cloudy, with a low around 31.
Saturday
Mostly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Summit Argo IL
 41.78°N 87.83°W
Last Update:
8:56 pm CDT Mar 21, 2026
Forecast Valid:
12am CDT Mar 22, 2026-6pm CDT Mar 28, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation