Upper Sioux Agency State Park Weather Forecast

    • 58
    • 87

    Partly Sunny

    • 50
    • 78

    Slight Chance Rain Showers

    • 46
    • 63

    Partly Sunny

    • 46
    • 62

    Rain Showers Likely

    • 43
    • 61

    Chance Rain Showers

    • 36
    • 57

    Mostly Cloudy

Today 11 Oct Yellow Medicine

Sunny. Highs in the mid 80s. Southwest Winds 5 to 10 Mph with Gusts to around 30 Mph shifting to the northwest in the afternoon.

Tonight 11 Oct Yellow Medicine

Cooler. Mostly cloudy. Lows in the mid 50s. Northwest 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 2 October, 2026

    34.9 °F

  • Average October

    57.5 °F

  • Highest 6 October, 2026

    86 °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

    58.3 °F
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