Upper Sioux Agency State Park Weather Forecast

    • 64
    • 95

    Mostly Sunny

    • 64
    • 88

    Partly Sunny

    • 72
    • 91

    Chance Thunderstorms

    • 65
    • 94

    Mostly Sunny

    • 58
    • 80

    Mostly Sunny

    • 59
    • 80

    Mostly Sunny

Today 17 Jul Yellow Medicine

Sunny. Highs in the mid 90s. Southwest Winds 5 to 15 Mph.

Tonight 17 Jul Yellow Medicine

Mostly clear. Lows in the mid 60s. Northwest Winds 5 to 10 Mph.

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Upper Sioux Agency State Park Temperature Statistics

July Temperature

Granite Falls, Granite Falls Municipal Airport/Lenzen-Roe Memorial Field (5.6 miles)

  • Lowest 2 July, 2026

    62.8 °F

  • Average July

    73.6 °F

  • Highest 14 July, 2026

    91 °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

    37.4 °F

  • Average 2021–2026

    48 °F

  • Average High 2021–2026

    58.5 °F
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