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.

Fair

54°F

12°C

Humidity 64%
Wind Speed Calm
Barometer 30.23 in (1023.3 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 5 Oct 12:53 am CDT
Extended Forecast for

Summit IL

  • Overnight

    Overnight: Clear, with a low around 48. Northwest wind around 5 mph.

    Low: 48 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 66. North northwest wind around 5 mph becoming east northeast in the afternoon. Winds could gust as high as 10 mph.

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 48. East wind around 5 mph becoming south southeast after midnight. Winds could gust as high as 10 mph.

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 72. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 72 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 58. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 48. Northwest wind around 5 mph.
Monday
Sunny, with a high near 66. North northwest wind around 5 mph becoming east northeast in the afternoon. Winds could gust as high as 10 mph.
Monday Night
Mostly clear, with a low around 48. East wind around 5 mph becoming south southeast after midnight. Winds could gust as high as 10 mph.
Tuesday
Sunny, with a high near 72. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 58. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Partly cloudy, with a low around 53.
Thursday
Mostly sunny, with a high near 69.
Thursday Night
Partly cloudy, with a low around 52.
Friday
Mostly sunny, with a high near 68.
Friday Night
Mostly clear, with a low around 52.
Saturday
Sunny, with a high near 72.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Mostly sunny, with a high near 76.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Summit IL
 41.8°N 87.8°W
Last Update:
1:20 am CDT Oct 5, 2026
Forecast Valid:
1am CDT Oct 5, 2026-6pm CDT Oct 11, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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