Upper Sioux Agency State Park Weather Forecast

    • 36
    • 56

    Mostly Sunny

    • 43
    • 54

    Mostly Cloudy

    • 50
    • 58

    Chance Rain Showers

    • 52
    • 65

    Mostly Cloudy

    • 52
    • 61

    Rain Showers Likely

    • 45
    • 60

    Chance Rain Showers

Today 29 Oct Yellow Medicine

Cooler. Mostly sunny. Near steady temperature in the lower 50s. North Winds up to 10 Mph.

Tonight 29 Oct Yellow Medicine

Partly cloudy. Lows in the mid 30s. East Winds up to 5 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

    55.9 °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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