Upper Sioux Agency State Park Weather Forecast

    • 41
    • 58

    Chance Rain Showers

    • 39
    • 59

    Chance Rain Showers

    • 33
    • 54

    Sunny

    • 44
    • 66

    Mostly Sunny

    • 41
    • 70

    Partly Sunny

    • 44
    • 69

    Mostly Sunny

Today 14 Oct Yellow Medicine

Decreasing Clouds. Highs in the upper 50s. North Winds up to 10 Mph.

Tonight 14 Oct Yellow Medicine

Increasing Clouds. Lows in the lower 40s. Northeast Winds up to 5 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

    61.1 °F

  • Highest 10 October, 2026

    92.1 °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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