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

Heat Persists in the South Central U.S. and California; Heavy Rain in the Ohio Valley

Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley, as well as in the Southwest and California this week with limited nighttime relief. Heavy rainfall will lead to localized areas of flash flooding in parts of the Ohio Valley/Central Appalachians. Dry and breezy conditions will enhance fire weather concerns across the northern Rockies and High Plains. Read More >

Current conditions at

Chicago, Chicago-O'Hare International Airport (KORD)

Lat: 41.98°NLon: 87.9°WElev: 666ft.

Partly Cloudy

77°F

25°C

Humidity 74%
Wind Speed W 6 mph
Barometer 29.98 in (1014.7 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 9 Sep 6:51 pm CDT
Extended Forecast for

Rosemont IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 66. North northwest wind around 5 mph.

    Low: 66 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 79. North wind around 5 mph.

    High: 79 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62. East northeast wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80. Light south wind becoming south southeast 5 to 10 mph in the morning.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63. Southeast wind around 5 mph, with gusts as high as 10 mph.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 66. North northwest wind around 5 mph.
Thursday
Mostly cloudy, with a high near 79. North wind around 5 mph.
Thursday Night
Mostly clear, with a low around 62. East northeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 80. Light south wind becoming south southeast 5 to 10 mph in the morning.
Friday Night
Mostly clear, with a low around 63. Southeast wind around 5 mph, with gusts as high as 10 mph.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 64.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
Mostly cloudy, with a low around 66.
Monday
A chance of showers. Partly sunny, with a high near 86.
Monday Night
A chance of showers. Mostly cloudy, with a low around 70.
Tuesday
A chance of showers. Mostly cloudy, with a high near 80.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 63.
Wednesday
A chance of showers. Partly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rosemont IL
 41.97°N 87.87°W
Last Update:
2:31 pm CDT Sep 9, 2026
Forecast Valid:
7pm CDT Sep 9, 2026-6pm CDT Sep 16, 2026
 
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Additional Resources

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Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation