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.

A Few Clouds

42°F

6°C

Humidity 92%
Wind Speed Calm
Barometer 30.12 in (1020.4 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 6 Apr 3:53 am CDT
Extended Forecast for

Summit IL

  • Overnight

    Overnight: A 20 percent chance of showers before 4am. Mostly cloudy, with a low around 40. West northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 40 °F

    Slight Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 50. Northwest wind around 15 mph, with gusts as high as 30 mph.

    High: 50 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of snow showers after 1am. Partly cloudy, with a low around 28. North wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 28 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 41. North northeast wind around 10 mph.

    High: 41 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow showers between 1am and 4am, then a slight chance of rain showers after 4am. Mostly cloudy, with a low around 33. East wind around 10 mph becoming south southeast after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 20%.

    Low: 33 °F

    Partly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 64. Breezy.

    High: 64 °F

    Mostly Cloudy
    then Partly
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers. Mostly cloudy, with a high near 66.

    High: 66 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Showers
    Likely

Detailed Forecast

Overnight
A 20 percent chance of showers before 4am. Mostly cloudy, with a low around 40. West northwest wind around 10 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 50. Northwest wind around 15 mph, with gusts as high as 30 mph.
Monday Night
A 20 percent chance of snow showers after 1am. Partly cloudy, with a low around 28. North wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 41. North northeast wind around 10 mph.
Tuesday Night
A slight chance of rain and snow showers between 1am and 4am, then a slight chance of rain showers after 4am. Mostly cloudy, with a low around 33. East wind around 10 mph becoming south southeast after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 20%.
Wednesday
Mostly cloudy, with a high near 64. Breezy.
Wednesday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 54.
Thursday
A chance of showers. Mostly cloudy, with a high near 66.
Thursday Night
Showers likely. Mostly cloudy, with a low around 48.
Friday
A chance of showers before 1pm. Partly sunny, with a high near 58.
Friday Night
A chance of showers. Partly cloudy, with a low around 43.
Saturday
A chance of showers. Partly sunny, with a high near 61.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 52.
Sunday
A chance of showers. Mostly cloudy, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Summit IL
 41.8°N 87.83°W
Last Update:
3:00 am CDT Apr 6, 2026
Forecast Valid:
3am CDT Apr 6, 2026-6pm CDT Apr 12, 2026
 
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