Duncan Lake Weather Forecast

    • 74
    • 103

    Slight Chance Thunderstorms

    • 75
    • 102

    Hot

    • 75
    • 101

    Hot

    • 74
    • 100

    Hot

    • 74
    • 99

    Slight Chance Thunderstorms

    • 72
    • 97

    Slight Chance Thunderstorms

Today 12 Sep Stephens

Sunny. A slight chance of Showers and Thunderstorms this afternoon. Hot with Highs around 103. South Winds 10 to 15 Mph. Chance of rain 20 percent.

Tonight 12 Sep Stephens

Mostly clear. Lows in the mid 70s. Southeast Winds 10 to 15 Mph. Heat index Values up to 105 early in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Duncan Lake Temperature Statistics

September Temperature

Duncan, Halliburton Field Airport (8.7 miles)

  • Lowest 1 September, 2026

    73.4 °F

  • Average September

    88.3 °F

  • Highest 2 September, 2026

    102.2 °F

Climate (2021–2026)

Duncan, Halliburton Field Airport (8.7 miles)

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  • Average Low 2021–2026

    52.8 °F

  • Average 2021–2026

    64.2 °F

  • Average High 2021–2026

    76.3 °F
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