Upper Sioux Agency State Park Weather Forecast

    • 42
    • 67

    Mostly Sunny

    • 48
    • 72

    Mostly Sunny

    • 50
    • 76

    Mostly Sunny

    • 56
    • 79

    Partly Sunny

    • 58
    • 75

    Chance Rain Showers

    • 47
    • 70

    Chance Rain Showers

Today 19 Oct Yellow Medicine

Sunny. Highs in the mid 60s. Northeast Winds 5 to 10 Mph shifting to the east in the afternoon.

Tonight 19 Oct Yellow Medicine

Clear. Lows in the mid 40s. Southeast Winds 5 to 10 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 17 October, 2026

    30.7 °F

  • Average October

    57.3 °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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