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.

Overcast

50°F

10°C

Humidity 28%
Wind Speed S 10 mph
Barometer 30.26 in (1025.5 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 24 Mar 3:53 pm CDT
Extended Forecast for

Summit Argo IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 39. South wind around 5 mph becoming east southeast in the evening. Winds could gust as high as 10 mph.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 71. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 71 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 54. South southwest wind around 10 mph, with gusts as high as 15 mph.

    Low: 54 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm, mainly after 4pm. Increasing clouds, with a high near 78. South southwest wind 5 to 15 mph becoming north in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.

    High: 78 °F

    Mostly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 7pm, then a chance of showers between 7pm and 1am. Mostly cloudy, with a low around 33. North northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    Low: 33 °F

    Showers
    Likely

  • Friday

    Friday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 39. South wind around 5 mph becoming east southeast in the evening. Winds could gust as high as 10 mph.
Wednesday
Partly sunny, with a high near 71. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 54. South southwest wind around 10 mph, with gusts as high as 15 mph.
Thursday
Showers likely and possibly a thunderstorm, mainly after 4pm. Increasing clouds, with a high near 78. South southwest wind 5 to 15 mph becoming north in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm before 7pm, then a chance of showers between 7pm and 1am. Mostly cloudy, with a low around 33. North northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 42.
Friday Night
Mostly clear, with a low around 30.
Saturday
Sunny, with a high near 53.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Partly sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 46.
Monday
Mostly sunny, with a high near 65.
Monday Night
A chance of showers. Mostly cloudy, with a low around 49.
Tuesday
A chance of showers. Mostly cloudy, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Summit Argo IL
 41.78°N 87.83°W
Last Update:
3:21 pm CDT Mar 24, 2026
Forecast Valid:
4pm CDT Mar 24, 2026-6pm CDT Mar 31, 2026
 
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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