Upper Sioux Agency State Park Weather Forecast

    • 48
    • 55

    Decreasing Clouds

    • 39
    • 68

    Rain Showers

    • 39
    • 58

    Partly Sunny

    • 45
    • 59

    Rain Showers Likely

    • 48
    • 62

    Chance Rain Showers

    • 48
    • 65

    Chance Rain Showers

Today 27 Oct Yellow Medicine

Not as cool. Mostly cloudy. Highs in the mid 50s. South Winds 5 to 15 Mph.

Tonight 27 Oct Yellow Medicine

Mostly cloudy. Near steady temperature in the upper 40s. South Winds up to 10 Mph with Gusts to around 25 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

    56.7 °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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