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

Areas of Severe Thunderstorms, Excessive Rainfall, and Extreme Heat Wednesday

In the Upper Midwest, heavy to excessive rain may bring flash and urban flooding through Wednesday. Scattered severe thunderstorms capable of large hail and damaging wind gusts are possible from the central High Plains into the Upper Midwest Wednesday. Extreme heat is ongoing over the Desert Southwest through Thursday. Read More >

Current conditions at

Duncan, Halliburton Field Airport (KDUC)

Lat: 34.47°NLon: 97.96°WElev: 1112ft.

Fair

91°F

33°C

Humidity 46%
Wind Speed E 9 mph
Barometer 30.00 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 7 Jul 7:55 pm CDT
Extended Forecast for

Duncan OK

  • Tonight

    Tonight: Mostly clear, with a low around 73. East southeast wind around 7 mph.

    Low: 73 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 99. South southeast wind 5 to 9 mph becoming southwest in the morning.

    High: 99 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 78. South wind around 9 mph.

    Low: 78 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 100. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 79. South wind around 14 mph, with gusts as high as 21 mph.

    Low: 79 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 78.

    Low: 78 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 97.

    High: 97 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.

    Low: 75 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 73. East southeast wind around 7 mph.
Wednesday
Sunny and hot, with a high near 99. South southeast wind 5 to 9 mph becoming southwest in the morning.
Wednesday Night
Mostly clear, with a low around 78. South wind around 9 mph.
Thursday
Sunny and hot, with a high near 100. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.
Thursday Night
Mostly clear, with a low around 79. South wind around 14 mph, with gusts as high as 21 mph.
Friday
Sunny and hot, with a high near 100.
Friday Night
Mostly clear, with a low around 78.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 97.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Sunday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 74.
Monday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 74.
Tuesday
Sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Duncan OK
 34.5°N 97.96°W
Last Update:
1:41 pm CDT Jul 7, 2026
Forecast Valid:
8pm CDT Jul 7, 2026-6pm CDT Jul 14, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation