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Hazardous Weather Conditions

Current conditions at

Chicago, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

Overcast

77°F

25°C

Humidity 74%
Wind Speed W 10 mph
Barometer 30.01 in (1015.3 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 5 Aug 6:53 pm CDT
Extended Forecast for

Lyons IL

  • Tonight

    Tonight: Showers and thunderstorms likely before 4am, then a chance of showers. Cloudy, with a low around 69. West wind 5 to 10 mph becoming southeast after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Showers
    Likely then
    Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers before 8am. Mostly cloudy, with a high near 78. South wind around 5 mph.

    High: 78 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 67. Southeast wind around 5 mph becoming calm in the evening.

    Low: 67 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon. Winds could gust as high as 10 mph.

    High: 84 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Southwest wind around 5 mph, with gusts as high as 10 mph.

    Low: 70 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear
    then Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms. Partly sunny, with a high near 84.

    High: 84 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Showers and thunderstorms likely before 4am, then a chance of showers. Cloudy, with a low around 69. West wind 5 to 10 mph becoming southeast after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A 20 percent chance of showers before 8am. Mostly cloudy, with a high near 78. South wind around 5 mph.
Thursday Night
Mostly cloudy, with a low around 67. Southeast wind around 5 mph becoming calm in the evening.
Friday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon. Winds could gust as high as 10 mph.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Southwest wind around 5 mph, with gusts as high as 10 mph.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 68.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 84.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Monday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 83.
Monday Night
Showers likely. Mostly cloudy, with a low around 69.
Tuesday
A chance of showers. Partly sunny, with a high near 79.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 66.
Wednesday
A chance of showers. Partly 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:
6:36 pm CDT Aug 5, 2026
Forecast Valid:
7pm CDT Aug 5, 2026-6pm CDT Aug 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