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.

Overcast

80°F

27°C

Humidity 76%
Wind Speed S 9 mph
Barometer 29.91 in (1011.5 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 16 Jul 1:53 am CDT
Extended Forecast for

Merrionette Park IL

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms, mainly between 3am and 5am. Mostly cloudy, with a steady temperature around 77. South wind around 5 mph.

    Low: 77 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 93. Heat index values as high as 99. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 93 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, with a low around 71. West southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    T-storms
    Likely then
    Chance
    T-storms

  • Thursday

    Thursday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 73. West northwest wind 10 to 15 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.

    High: 73 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 63. North northeast wind 5 to 15 mph.

    Low: 63 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 84.

    High: 84 °F

    T-storms
    Likely

  • Saturday Night

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

    Low: 70 °F

    Chance
    T-storms

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms, mainly between 3am and 5am. Mostly cloudy, with a steady temperature around 77. South wind around 5 mph.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 93. Heat index values as high as 99. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Wednesday Night
Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, with a low around 71. West southwest wind around 10 mph, with gusts as high as 20 mph. 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 1pm. Mostly cloudy, with a high near 73. West northwest wind 10 to 15 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 63. North northeast wind 5 to 15 mph.
Friday
Mostly sunny, with a high near 80.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 68.
Saturday
Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 84.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 82.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 84.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Tuesday
Mostly sunny, with a high near 92.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Merrionette Park IL
 41.71°N 87.72°W
Last Update:
2:07 am CDT Jul 16, 2025
Forecast Valid:
2am CDT Jul 16, 2025-6pm CDT Jul 22, 2025
 
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