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.

Light Snow Fog/Mist

26°F

-3°C

Humidity 88%
Wind Speed SE 8 mph
Barometer 30.08 in (1020.1 mb)
Dewpoint 23°F (-5°C)
Visibility 1.50 mi
Wind Chill18°F (-8°C)
Last update 1 Dec 7:53 pm CST
Extended Forecast for

Summit IL

Winter Weather Advisory December 1, 08:18pm until December 2, 12:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 1, 08:18pm until December 2, 12:00am

    NOW until 12:00am Tue

    Winter Weather Advisory

  • Tonight

    Low: 19 °F

    Snow then
    Snow Likely

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 23. West northwest wind 5 to 10 mph becoming southwest in the afternoon.

    High: 23 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a temperature falling to near 19 by 8pm, then rising to around 23 during the remainder of the night. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 19 °F⇑

    Mostly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of snow showers, mainly after noon. Cloudy, with a high near 33. South southwest wind 10 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 33 °F

    Slight Chance
    Snow Showers
    then Chance
    Snow Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow showers before midnight. Mostly cloudy, with a low around 5. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 5 °F

    Chance Snow
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 15.

    High: 15 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 0.

    Low: 0 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 25.

    High: 25 °F

    Partly Sunny

Detailed Forecast

Tonight
Snow before 1am, then a chance of snow with intermittent flurries between 1am and 2am. Low around 19. South southeast wind 5 to 10 mph becoming west northwest after midnight. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 2 inches possible.
Tuesday
Mostly cloudy, with a high near 23. West northwest wind 5 to 10 mph becoming southwest in the afternoon.
Tuesday Night
Mostly cloudy, with a temperature falling to near 19 by 8pm, then rising to around 23 during the remainder of the night. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
A 50 percent chance of snow showers, mainly after noon. Cloudy, with a high near 33. South southwest wind 10 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
A 30 percent chance of snow showers before midnight. Mostly cloudy, with a low around 5. Northwest wind around 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 15.
Thursday Night
Partly cloudy, with a low around 0.
Friday
Partly sunny, with a high near 25.
Friday Night
Mostly cloudy, with a low around 19.
Saturday
Mostly cloudy, with a high near 30.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 19.
Sunday
Mostly cloudy, with a high near 28.
Sunday Night
Mostly cloudy, with a low around 12.
Monday
Partly sunny, with a high near 26.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Summit IL
 41.8°N 87.8°W
Last Update:
6:21 pm CST Dec 1, 2025
Forecast Valid:
8pm CST Dec 1, 2025-6pm CST Dec 8, 2025
 
Forecast Discussion
 
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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