Duncan Weather Forecast

    • 65
    • 86

    Chance Thunderstorms

    • 60
    • 83

    Mostly Sunny

    • 64
    • 86

    Mostly Sunny

    • 63
    • 84

    Mostly Sunny

    • 62
    • 88

    Partly Sunny

    • 64
    • 82

    Chance Rain Showers

Today 1 Sep Stephens

Partly sunny in the Morning, then clearing. Humid with Highs in the mid 80s. Northeast Winds around 5 Mph.

Tonight 1 Sep Stephens

Partly cloudy with a 20 percent chance of Showers. Patchy fog. Near steady temperature in the upper 60s. Northeast Winds around 5 Mph.

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Duncan Temperature Statistics

September Temperature

Duncan, Halliburton Field Airport (1.9 miles)

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Climate (2020–Present)

Duncan, Halliburton Field Airport (1.9 miles)

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  • Average Low 2020–2025

    52 °F

  • Average 2020–2025

    63 °F

  • Average High 2020–2025

    74.8 °F
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