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.

Mostly Cloudy

80°F

27°C

Humidity 64%
Wind Speed S 14 G 22 mph
Barometer 29.97 in (1013.4 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 18 Jun 5:53 am CDT
Extended Forecast for

Summit IL

  • Today

    Today: A slight chance of showers, then a chance of showers and thunderstorms after 7am. Cloudy, then gradually becoming mostly sunny, with a high near 94. Heat index values as high as 99. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 40%.

    High: 94 °F

    Breezy.
    Chance
    Showers then
    Slight Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 77. South southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 77 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 96. Heat index values as high as 100. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 96 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 73. South southwest wind 5 to 10 mph becoming light southwest after midnight. Chance of precipitation is 20%.

    Low: 73 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Calm wind becoming east northeast around 5 mph in the morning. Winds could gust as high as 10 mph.

    High: 90 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms after 1pm. Partly sunny and hot, with a high near 96.

    High: 96 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
A slight chance of showers, then a chance of showers and thunderstorms after 7am. Cloudy, then gradually becoming mostly sunny, with a high near 94. Heat index values as high as 99. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 40%.
Tonight
Partly cloudy, with a low around 77. South southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Juneteenth
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 96. Heat index values as high as 100. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 73. South southwest wind 5 to 10 mph becoming light southwest after midnight. Chance of precipitation is 20%.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Calm wind becoming east northeast around 5 mph in the morning. Winds could gust as high as 10 mph.
Thursday Night
Partly cloudy, with a low around 69.
Friday
Mostly sunny, with a high near 92.
Friday Night
Partly cloudy, with a low around 73.
Saturday
A chance of showers and thunderstorms after 1pm. Partly sunny and hot, with a high near 96.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Sunday Night
Mostly clear, with a low around 67.
Monday
Sunny, with a high near 85.
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Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Summit IL
 41.8°N 87.8°W
Last Update:
5:41 am CDT Jun 18, 2024
Forecast Valid:
6am CDT Jun 18, 2024-6pm CDT Jun 24, 2024
 
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Additional Resources

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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