Upper Sioux Agency State Park Weather Forecast

    • 58
    • 76

    Becoming Sunny

    • 51
    • 83

    Mostly Sunny

    • 48
    • 74

    Partly Sunny

    • 47
    • 66

    Partly Sunny

    • 55
    • 68

    Partly Sunny

    • 59
    • 78

    Partly Sunny

    • 50
    • 68

    Partly Sunny

Today 5 Oct Yellow Medicine

Sunny. Highs in the lower 70s. South Winds 10 to 20 Mph.

Tonight 5 Oct Yellow Medicine

Warmer, clear. Lows in the upper 50s. South Winds 10 to 15 Mph with Gusts to around 35 Mph.

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Upper Sioux Agency State Park Temperature Statistics

October Temperature

Granite Falls, Granite Falls Municipal Airport/Lenzen-Roe Memorial Field (5.6 miles)

  • Lowest 2 October, 2026

    34.9 °F

  • Average October

    55.4 °F

  • Highest 1 October, 2026

    67.8 °F

Climate (2021–2026)

Granite Falls, Granite Falls Municipal Airport/Lenzen-Roe Memorial Field (5.6 miles)

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  • Average Low 2021–2026

    37.5 °F

  • Average 2021–2026

    48 °F

  • Average High 2021–2026

    58.4 °F
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