Fort Thompson Weather Forecast

    • 56
    • 89

    Breezy

    • 51
    • 71

    Rain Showers Likely

    • 54
    • 64

    Rain Showers

    • 50
    • 74

    Mostly Sunny

    • 49
    • 66

    Slight Chance Thunderstorms

    • 50
    • 68

    Slight Chance Rain Showers

Today 11 Sep Buffalo

Partly sunny. Highs in the upper 80s. South Winds 15 to 20 Mph, becoming southwest in the afternoon.

Tonight 11 Sep Buffalo

Partly cloudy and warmer. Near steady temperature in the upper 60s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Real-Time

Fort Thompson Temperature Statistics

September Temperature

Chamberlain, Chamberlain Municipal Airport (21.1 miles)

  • Lowest 8 September, 2026

    62.1 °F

  • Average September

    76.2 °F

  • Highest 3 September, 2026

    99.3 °F

Climate (2021–2026)

Chamberlain, Chamberlain Municipal Airport (21.1 miles)

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  • Average Low 2021–2026

    36.5 °F

  • Average 2021–2026

    47.8 °F

  • Average High 2021–2026

    59.6 °F
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