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.

A Few Clouds and Windy

34°C

94°F

Humidity 51%
Wind Speed SW 46 G 63 km/h
Barometer 1007.7 mb (29.80 in)
Dewpoint 23°C (73°F)
Visibility 16 km
Heat Index40°C (104°F)
Last update 21 Jun 4:53 pm CDT
Extended Forecast for

Berwyn IL

Extreme Heat Warning June 21, 05:46pm until June 24, 12:00am
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning June 21, 05:46pm until June 24, 12:00am

    NOW until 12:00am Tue

    Extreme Heat Warning

  • Tonight

    Low: 26 °C

    Mostly Clear
    and Breezy
    then Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 36. Heat index values as high as 41. South southwest wind 20 to 25 km/h increasing to 25 to 30 km/h in the afternoon. Winds could gust as high as 50 km/h.

    High: 36 °C

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 26. South southwest wind 15 to 25 km/h, with gusts as high as 40 km/h.

    Low: 26 °C

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 36. Heat index values as high as 39. Southwest wind 15 to 25 km/h, with gusts as high as 35 km/h.

    High: 36 °C

    Hot

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 24. Southwest wind 15 to 20 km/h decreasing to 10 to 15 km/h after midnight. Winds could gust as high as 30 km/h.

    Low: 24 °C

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 34.

    High: 34 °C

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 22.

    Low: 22 °C

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 32.

    High: 32 °C

    T-storms
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 26. Breezy, with a south southwest wind 30 to 35 km/h decreasing to 20 to 25 km/h after midnight. Winds could gust as high as 65 km/h.
Sunday
Sunny and hot, with a high near 36. Heat index values as high as 41. South southwest wind 20 to 25 km/h increasing to 25 to 30 km/h in the afternoon. Winds could gust as high as 50 km/h.
Sunday Night
Clear, with a low around 26. South southwest wind 15 to 25 km/h, with gusts as high as 40 km/h.
Monday
Sunny and hot, with a high near 36. Heat index values as high as 39. Southwest wind 15 to 25 km/h, with gusts as high as 35 km/h.
Monday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 24. Southwest wind 15 to 20 km/h decreasing to 10 to 15 km/h after midnight. Winds could gust as high as 30 km/h.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 34.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 22.
Wednesday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 32.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 22.
Thursday
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 33.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 22.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 31.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 21.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 31.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Berwyn IL
 41.84°N 87.8°W
Last Update:
3:41 pm CDT Jun 21, 2025
Forecast Valid:
5pm CDT Jun 21, 2025-6pm CDT Jun 28, 2025
 
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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