Upper Sioux Agency State Park Weather Forecast

    • 39
    • 59

    Partly Sunny

    • 40
    • 60

    Mostly Sunny

    • 39
    • 61

    Chance Rain Showers

    • 33
    • 55

    Mostly Sunny

    • 44
    • 63

    Mostly Sunny

    • 43
    • 69

    Mostly Sunny

Today 13 Oct Yellow Medicine

Cooler. Mostly cloudy. Highs in the upper 50s. Northwest Winds 5 to 10 Mph.

Tonight 13 Oct Yellow Medicine

Mostly cloudy in the evening then clearing. Lows in the upper 30s. North 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

    60 °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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