Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Current conditions at

Duncan, Halliburton Field Airport (KDUC)

Lat: 34.47°NLon: 97.96°WElev: 1112ft.

Fair

84°F

29°C

Humidity 55%
Wind Speed S 10 mph
Barometer 29.95 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 5 Sep 1:55 am CDT
Extended Forecast for

Duncan OK

Heat Advisory September 5, 12:00pm until September 5, 07:00pm
Click here for hazard details and duration
Heat Advisory
  • Overnight

    Overnight: Clear, with a low around 74. South southeast wind 6 to 8 mph.

    Low: 74 °F

    Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 101. Heat index values as high as 105. Southeast wind 5 to 9 mph.

    High: 101 °F

    Hot

  • Saturday Night

    Saturday Night: Clear, with a low around 74. Southeast wind 5 to 9 mph becoming light south southeast  after midnight.

    Low: 74 °F

    Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 101. Heat index values as high as 104. Calm wind becoming southeast 5 to 8 mph in the afternoon.

    High: 101 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 75. Southeast wind 3 to 8 mph.

    Low: 75 °F

    Clear

  • Labor Day

    Labor Day: Sunny and hot, with a high near 101.

    High: 101 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 75.

    Low: 75 °F

    Clear

  • Tuesday

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

    High: 102 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 74. South southeast wind 6 to 8 mph.
Saturday
Sunny and hot, with a high near 101. Heat index values as high as 105. Southeast wind 5 to 9 mph.
Saturday Night
Clear, with a low around 74. Southeast wind 5 to 9 mph becoming light south southeast after midnight.
Sunday
Sunny and hot, with a high near 101. Heat index values as high as 104. Calm wind becoming southeast 5 to 8 mph in the afternoon.
Sunday Night
Clear, with a low around 75. Southeast wind 3 to 8 mph.
Labor Day
Sunny and hot, with a high near 101.
Monday Night
Clear, with a low around 75.
Tuesday
Sunny and hot, with a high near 102.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Sunny and hot, with a high near 101.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
Sunny and hot, with a high near 101.
Thursday Night
Partly cloudy, with a low around 74.
Friday
Sunny and hot, with a high near 101.
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ABOUT THIS FORECAST

 
Point Forecast:
Duncan OK
 34.5°N 97.96°W
1:26 am CDT Sep 5, 2026
2am CDT Sep 5, 2026-6pm CDT Sep 11, 2026
 
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