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

Hazardous Weather Conditions

Current conditions at

Chicago, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

Overcast

23°F

-5°C

Humidity 55%
Wind Speed SW 13 mph
Barometer 30.18 in (1023.7 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 17 Mar 8:53 pm CDT
Extended Forecast for

Summit Argo IL

  • Tonight

    Tonight: Snow, mainly after 1am. Low around 21. South wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of less than one inch possible.

    Low: 21 °F

    Slight Chance
    Snow then
    Snow

  • Wednesday

    Wednesday: A 30 percent chance of snow before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 42. Southwest wind 10 to 15 mph.

    High: 42 °F

    Chance Snow
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers after 1am. Increasing clouds, with a low around 35. South southwest wind around 5 mph.

    Low: 35 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 50. South southwest wind around 5 mph becoming north in the afternoon. Winds could gust as high as 10 mph.

    High: 50 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 37. North northeast wind around 5 mph becoming south southwest after midnight. Winds could gust as high as 10 mph.

    Low: 37 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 57.

    High: 57 °F

    Mostly Cloudy

  • Friday Night

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

    Low: 41 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

Detailed Forecast

Tonight
Snow, mainly after 1am. Low around 21. South wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of less than one inch possible.
Wednesday
A 30 percent chance of snow before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 42. Southwest wind 10 to 15 mph.
Wednesday Night
A 30 percent chance of showers after 1am. Increasing clouds, with a low around 35. South southwest wind around 5 mph.
Thursday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 50. South southwest wind around 5 mph becoming north in the afternoon. Winds could gust as high as 10 mph.
Thursday Night
Mostly cloudy, with a low around 37. North northeast wind around 5 mph becoming south southwest after midnight. Winds could gust as high as 10 mph.
Friday
Mostly cloudy, with a high near 57.
Friday Night
Mostly cloudy, with a low around 41.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
Mostly cloudy, with a high near 62.
Sunday Night
Partly cloudy, with a low around 32.
Monday
Partly sunny, with a high near 42.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Partly 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:
8:51 pm CDT Mar 17, 2026
Forecast Valid:
9pm CDT Mar 17, 2026-6pm CDT Mar 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation