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

40°F

4°C

Humidity 51%
Wind Speed Calm
Barometer 29.64 in (1004.0 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 19 Feb 3:53 am CST
Extended Forecast for

Summit Argo IL

  • Today

    Today: A slight chance of showers before 3pm, then a chance of showers and thunderstorms between 3pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 54. East northeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 54 °F

    Partly Sunny
    then Showers
    Likely

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 3am, then a chance of showers. Low around 35. Breezy, with a northeast wind 10 to 15 mph becoming west southwest 15 to 20 mph after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 35 °F

    Showers then
    Chance
    Showers and
    Breezy

  • Friday

    Friday: A chance of rain and snow before 9am, then a chance of snow between 9am and noon. Mostly cloudy, with a high near 42. Breezy, with a west wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 30%.

    High: 42 °F

    Breezy.
    Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 28. West wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 28 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 39. West northwest wind around 10 mph, with gusts as high as 15 mph.

    High: 39 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A 20 percent chance of snow. Mostly cloudy, with a high near 34.

    High: 34 °F

    Slight Chance
    Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 32.

    High: 32 °F

    Partly Sunny

Detailed Forecast

Today
A slight chance of showers before 3pm, then a chance of showers and thunderstorms between 3pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 54. East northeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm before 3am, then a chance of showers. Low around 35. Breezy, with a northeast wind 10 to 15 mph becoming west southwest 15 to 20 mph after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of rain and snow before 9am, then a chance of snow between 9am and noon. Mostly cloudy, with a high near 42. Breezy, with a west wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 28. West wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday
Partly sunny, with a high near 39. West northwest wind around 10 mph, with gusts as high as 15 mph.
Saturday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 26.
Sunday
A 20 percent chance of snow. Mostly cloudy, with a high near 34.
Sunday Night
Mostly cloudy, with a low around 22.
Monday
Partly sunny, with a high near 32.
Monday Night
Partly cloudy, with a low around 21.
Tuesday
Mostly sunny, with a high near 40.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Partly sunny, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
Summit Argo IL
 41.78°N 87.83°W
Last Update:
3:36 am CST Feb 19, 2026
Forecast Valid:
4am CST Feb 19, 2026-6pm CST Feb 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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