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.

Mostly Cloudy

20°F

-7°C

Humidity 43%
Wind Speed S 10 G 18 mph
Barometer 30.29 in (1028.1 mb)
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill9°F (-13°C)
Last update 20 Jan 2:53 pm CST
Extended Forecast for

Summit Argo IL

Winter Weather Advisory January 20, 10:00pm until January 21, 08:00am
Click here for hazard details and duration
Winter Weather Advisory

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 20. South wind around 10 mph.

    High: 20 °F

    Partly Sunny

  • Tonight

    Tonight: Snow, mainly after midnight. Temperature rising to around 24 by 5am. South wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 19 °F⇑

    Chance Snow
    then Snow

  • Wednesday

    Wednesday: Snow, mainly before 8am. High near 31. West wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 31 °F

    Snow then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Snow showers likely, mainly before 10pm. Patchy blowing snow between 9pm and 3am. Mostly cloudy, with a low around 14. Wind chill values as low as 1. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 14 °F

    Snow Showers
    Likely and
    Patchy
    Blowing Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 22. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 22 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -6.

    Low: -6 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near 0.

    High: 0 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -6.

    Low: -6 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy and cold, with a high near 10.

    High: 10 °F

    Cold

Detailed Forecast

This Afternoon
Partly sunny, with a high near 20. South wind around 10 mph.
Tonight
Snow, mainly after midnight. Temperature rising to around 24 by 5am. South wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Wednesday
Snow, mainly before 8am. High near 31. West wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Wednesday Night
Snow showers likely, mainly before 10pm. Patchy blowing snow between 9pm and 3am. Mostly cloudy, with a low around 14. Wind chill values as low as 1. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday
Mostly sunny, with a high near 22. West wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly cloudy, with a low around -6.
Friday
Mostly sunny and cold, with a high near 0.
Friday Night
Mostly cloudy, with a low around -6.
Saturday
Mostly cloudy and cold, with a high near 10.
Saturday Night
Mostly cloudy, with a low around 4.
Sunday
Partly sunny, with a high near 16.
Sunday Night
Mostly cloudy, with a low around 3.
Monday
Mostly sunny, with a high near 18.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Summit Argo IL
 41.78°N 87.83°W
Last Update:
3:11 pm CST Jan 20, 2026
Forecast Valid:
3pm CST Jan 20, 2026-6pm CST Jan 26, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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