Upper Sioux Agency State Park Weather Forecast

    • 67
    • 91

    Breezy

    • 55
    • 87

    Partly Sunny

    • 47
    • 69

    Slight Chance Rain Showers

    • 44
    • 61

    Partly Sunny

    • 47
    • 63

    Rain Showers Likely

    • 43
    • 61

    Chance Rain Showers

Today 10 Oct Yellow Medicine

Windy, sunny. Patchy blowing dust in the afternoon. Highs around 90. South Winds 20 to 30 Mph with Gusts to around 45 Mph.

Tonight 10 Oct Yellow Medicine

Breezy, clear. Lows in the upper 60s. South Winds 15 to 25 Mph decreasing to 10 to 15 Mph after midnight. Gusts up to 40 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

    57.7 °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

    58.4 °F
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