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

Heavy Rainfall and Severe Thunderstorms in the Midwest and Ohio Valley Tuesday

Multiple rounds of severe thunderstorms appear likely Tuesday across the Midwest and Ohio Valley, with severe wind gusts in excess of 75 mph as the primary threat. Heavy to excessive rainfall may lead to considerable flash and urban flooding impacts Tuesday across portions of the Ohio Valley. A Moderate Risk (level 3 of 4) of excessive rainfall has been issued. Read More >

Hazardous Weather Conditions

Current conditions at

Duncan, Halliburton Field Airport (KDUC)

Lat: 34.47°NLon: 97.96°WElev: 1112ft.

Fair

77°F

25°C

Humidity 79%
Wind Speed S 6 mph
Barometer 30.03 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 11 Aug 5:15 am CDT
Extended Forecast for

Marlow OK

Heat Advisory August 11, 12:00pm until August 11, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Sunny and hot, with a high near 101. Heat index values as high as 104. South wind 10 to 14 mph, with gusts as high as 21 mph.

    High: 101 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 78. South wind 10 to 13 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 102. Heat index values as high as 106. South wind 13 to 16 mph, with gusts as high as 24 mph.

    High: 102 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 78. South wind 13 to 15 mph, with gusts as high as 23 mph.

    Low: 78 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 103. South wind 15 to 18 mph, with gusts as high as 28 mph.

    High: 103 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 78.

    Low: 78 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 102.

    High: 102 °F

    Hot

  • Friday Night

    Friday Night: Clear, with a low around 77.

    Low: 77 °F

    Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 101.

    High: 101 °F

    Hot

Detailed Forecast

Today
Sunny and hot, with a high near 101. Heat index values as high as 104. South wind 10 to 14 mph, with gusts as high as 21 mph.
Tonight
Clear, with a low around 78. South wind 10 to 13 mph, with gusts as high as 20 mph.
Wednesday
Sunny and hot, with a high near 102. Heat index values as high as 106. South wind 13 to 16 mph, with gusts as high as 24 mph.
Wednesday Night
Clear, with a low around 78. South wind 13 to 15 mph, with gusts as high as 23 mph.
Thursday
Sunny and hot, with a high near 103. South wind 15 to 18 mph, with gusts as high as 28 mph.
Thursday Night
Clear, with a low around 78.
Friday
Sunny and hot, with a high near 102.
Friday Night
Clear, with a low around 77.
Saturday
Sunny and hot, with a high near 101.
Saturday Night
Mostly clear, with a low around 76.
Sunday
Sunny and hot, with a high near 101.
Sunday Night
Mostly clear, with a low around 75.
Monday
Sunny and hot, with a high near 102.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marlow OK
 34.64°N 97.97°W
Last Update:
1:27 am CDT Aug 11, 2026
Forecast Valid:
5am CDT Aug 11, 2026-6pm CDT Aug 17, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation