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

78°F

26°C

Humidity 56%
Wind Speed Vrbl 7 mph
Barometer 29.84 in (1009.6 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 22 Sep 8:53 pm CDT
Extended Forecast for

Lyons IL

  • Tonight

    Tonight: A slight chance of showers, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 64. South southwest wind 5 to 10 mph. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 78. Southwest wind around 5 mph becoming north in the afternoon. Winds could gust as high as 10 mph. Chance of precipitation is 40%.

    High: 78 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Cloudy, with a low around 63. North northeast wind 5 to 10 mph. Chance of precipitation is 40%.

    Low: 63 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers. Partly sunny, with a high near 72. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 72 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 61. North wind 5 to 10 mph.

    Low: 61 °F

    Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers. Partly sunny, with a high near 72.

    High: 72 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 64. South southwest wind 5 to 10 mph. Chance of precipitation is 30%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 78. Southwest wind around 5 mph becoming north in the afternoon. Winds could gust as high as 10 mph. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Cloudy, with a low around 63. North northeast wind 5 to 10 mph. Chance of precipitation is 40%.
Wednesday
A 40 percent chance of showers. Partly sunny, with a high near 72. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 61. North wind 5 to 10 mph.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 72.
Thursday Night
Mostly clear, with a low around 58.
Friday
Sunny, with a high near 77.
Friday Night
Mostly clear, with a low around 60.
Saturday
Sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 59.
Monday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lyons IL
 41.82°N 87.83°W
Last Update:
7:56 pm CDT Sep 22, 2025
Forecast Valid:
9pm CDT Sep 22, 2025-6pm CDT Sep 29, 2025
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation