Duncan Weather Forecast

    • 75
    • 106

    Chance Rain Showers

    • 79
    • 108

    Hot

    • 78
    • 110

    Hot

    • 76
    • 107

    Hot

    • 73
    • 103

    Hot

    • 74
    • 102

    Hot

Today 22 Aug Stephens

Partly sunny. A slight chance of Showers and Thunderstorms this Morning, then a chance of Showers and Thunderstorms this afternoon. Hot with Highs around 106. South Winds 5 to 10 Mph. Chance of rain 30 percent.

Tonight 22 Aug Stephens

Partly cloudy. A slight chance of Showers and Thunderstorms in the evening. Lows in the mid 70s. Southeast Winds 5 to 10 Mph, becoming east after midnight. Chance of rain 20 percent. Heat index Values up to 106 early in the evening.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Duncan Temperature Statistics

August Temperature

Duncan, Halliburton Field Airport (1.9 miles)

  • Lowest 3 August, 2026

    68 °F

  • Average August

    88.8 °F

  • Highest 18 August, 2026

    107.6 °F

Climate (2021–2026)

Duncan, Halliburton Field Airport (1.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    52.7 °F

  • Average 2021–2026

    64.1 °F

  • Average High 2021–2026

    76.2 °F
Get WillyWeather+ to remove ads