Fort Sill Weather Forecast

    • 68
    • 84

    Rain Showers

    • 64
    • 84

    Chance Rain Showers

    • 59
    • 75

    Chance Rain Showers

    • 60
    • 77

    Slight Chance Rain Showers

    • 57
    • 81

    Mostly Sunny

    • 56
    • 81

    Sunny

Today 30 Sep Comanche

Showers. A slight chance of Thunderstorms this Morning, then a chance of Thunderstorms this afternoon. Highs in the mid 80s. South Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain near 100 percent.

Tonight 30 Sep Comanche

Showers with a chance of Thunderstorms in the Evening, then Showers likely with a slight chance of Thunderstorms after midnight. Locally heavy rainfall possible in the evening. Humid with Lows in the upper 60s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 90 percent.

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Fort Sill Temperature Statistics

September Temperature

Fort Sill (9.3 miles)

  • Lowest 21 September, 2026

    69.3 °F

  • Average September

    87 °F

  • Highest 12 September, 2026

    107.8 °F

Climate (2021–2026)

Fort Sill (9.3 miles)

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  • Average Low 2021–2026

    54.2 °F

  • Average 2021–2026

    65.8 °F

  • Average High 2021–2026

    77.3 °F
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