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.

Fair

73°F

23°C

Humidity 87%
Wind Speed Calm
Barometer 29.88 in (1010.9 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 13 Aug 1:53 am CDT
Extended Forecast for

Westchester IL

  • Overnight

    Overnight: Patchy fog. Otherwise, partly cloudy, with a low around 70. North northeast wind around 5 mph.

    Low: 70 °F

    Patchy Fog

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 80. East wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 80 °F

    Patchy Fog
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, mainly before 4am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 68. East northeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 68 °F

    Showers
    Likely

  • Friday

    Friday: Showers and thunderstorms likely before 5pm, then a chance of showers. Mostly cloudy, with a high near 80. East wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 70. East northeast wind 5 to 10 mph. Chance of precipitation is 70%.

    Low: 70 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. Chance of precipitation is 70%.

    High: 84 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.

    Low: 73 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84.

    High: 84 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 68.

    Low: 68 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, partly cloudy, with a low around 70. North northeast wind around 5 mph.
Thursday
A slight chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 80. East wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers and thunderstorms likely, mainly before 4am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 68. East northeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Showers and thunderstorms likely before 5pm, then a chance of showers. Mostly cloudy, with a high near 80. East wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 70. East northeast wind 5 to 10 mph. Chance of precipitation is 70%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. Chance of precipitation is 70%.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Sunday
A chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84.
Sunday Night
Mostly cloudy, with a low around 68.
Monday
Mostly sunny, with a high near 79.
Monday Night
Mostly clear, with a low around 63.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 66.
Wednesday
A chance of showers. Partly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Westchester IL
 41.84°N 87.88°W
Last Update:
2:46 am CDT Aug 13, 2026
Forecast Valid:
2am CDT Aug 13, 2026-6pm CDT Aug 19, 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