National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

Mostly Cloudy

84°F

29°C

Humidity 48%
Wind Speed W 10 G 18 mph
Barometer 29.87 in (1010.5 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 26 Aug 3:53 pm CDT
Extended Forecast for

Forest Park IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers. Mostly sunny, with a high near 84. West wind around 15 mph, with gusts as high as 20 mph.

    High: 84 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers before 8pm. Mostly clear, with a low around 66. West northwest wind 5 to 10 mph.

    Low: 66 °F

    Slight Chance
    Showers then
    Clear

  • Thursday

    Thursday: A 20 percent chance of showers after 3pm. Mostly sunny, with a high near 81. Northwest wind 5 to 10 mph becoming northeast in the afternoon.

    High: 81 °F

    Sunny then
    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63. East northeast wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 81. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 68 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 87.

    High: 87 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers. Mostly sunny, with a high near 84. West wind around 15 mph, with gusts as high as 20 mph.
Tonight
A 20 percent chance of showers before 8pm. Mostly clear, with a low around 66. West northwest wind 5 to 10 mph.
Thursday
A 20 percent chance of showers after 3pm. Mostly sunny, with a high near 81. Northwest wind 5 to 10 mph becoming northeast in the afternoon.
Thursday Night
Mostly clear, with a low around 63. East northeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 81. Calm wind becoming southeast around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 64.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Mostly cloudy, with a low around 68.
Sunday
Partly sunny, with a high near 87.
Sunday Night
Mostly cloudy, with a low around 73.
Monday
Partly sunny, with a high near 90.
Monday Night
Mostly cloudy, with a low around 74.
Tuesday
Mostly sunny, with a high near 89.
Tuesday Night
Partly cloudy, with a low around 72.
Wednesday
Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Forest Park IL
 41.86°N 87.82°W
Last Update:
3:11 pm CDT Aug 26, 2026
Forecast Valid:
4pm CDT Aug 26, 2026-6pm CDT Sep 2, 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