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.

Thunderstorm Rain Fog/Mist

37°F

3°C

Humidity 93%
Wind Speed N 16 G 30 mph
Barometer 29.31 in (993.2 mb)
Dewpoint 35°F (2°C)
Visibility 2.50 mi
Wind Chill28°F (-2°C)
Last update 15 Mar 6:53 pm CDT
Extended Forecast for

Summit IL

Winter Weather Advisory March 16, 01:00am until March 16, 01:00pm
Flood Advisory until March 15, 09:30pm
Click here for hazard details and duration
Winter Weather Advisory
...
  •  
    Flood Advisory until March 15, 09:30pm

    NOW until 9:30pm Sun

    Flood Advisory

  • Tonight

    Low: 24 °F

    Rain/Snow and
    Patchy
    Blowing Snow

  • Monday

    Monday: Snow showers before 1pm, then snow likely, mainly between 1pm and 4pm. Patchy blowing snow. Temperature falling to around 23 by 5pm. Windy, with a west northwest wind 25 to 30 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 25 °F⇓

    Snow Showers
    and Patchy
    Blowing Snow

  • Monday Night

    Monday Night: A 30 percent chance of snow before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 12. Wind chill values as low as -2. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 12 °F

    Chance Snow
    and Blustery
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 25. Wind chill values as low as -2. West wind around 10 mph, with gusts as high as 20 mph.

    High: 25 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 22. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    Low: 22 °F

    Slight Chance
    Snow Showers
    then Snow
    Showers
    Likely

  • Wednesday

    Wednesday: A 20 percent chance of snow showers before 1pm. Mostly cloudy, with a high near 43.

    High: 43 °F

    Slight Chance
    Snow Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

Detailed Forecast

Tonight
Rain showers before midnight, then a chance of rain and snow showers between midnight and 1am, then snow showers likely after 1am. Some thunder is also possible. Patchy blowing snow after 4am. Low around 24. Windy, with a north wind 20 to 30 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of less than one inch possible.
Monday
Snow showers before 1pm, then snow likely, mainly between 1pm and 4pm. Patchy blowing snow. Temperature falling to around 23 by 5pm. Windy, with a west northwest wind 25 to 30 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Monday Night
A 30 percent chance of snow before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 12. Wind chill values as low as -2. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday
Mostly sunny, with a high near 25. Wind chill values as low as -2. West wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 22. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Wednesday
A 20 percent chance of snow showers before 1pm. Mostly cloudy, with a high near 43.
Wednesday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 34.
Thursday
Mostly sunny, with a high near 53.
Thursday Night
Mostly cloudy, with a low around 37.
Friday
Partly sunny, with a high near 62.
Friday Night
Mostly cloudy, with a low around 41.
Saturday
Mostly sunny, with a high near 58.
Saturday Night
Partly cloudy, with a low around 39.
Sunday
Partly sunny, with a high near 53.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Summit IL
 41.8°N 87.83°W
Last Update:
6:56 pm CDT Mar 15, 2026
Forecast Valid:
7pm CDT Mar 15, 2026-6pm CDT Mar 22, 2026
 
Forecast Discussion
 
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Additional Resources

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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