Upper Sioux Agency State Park Weather Forecast

    • 62
    • 78

    Slight Chance Thunderstorms

    • 62
    • 81

    Mostly Sunny

    • 66
    • 85

    Mostly Sunny

    • 67
    • 88

    Mostly Sunny

    • 69
    • 90

    Mostly Sunny

    • 71
    • 92

    Mostly Sunny

    • 69
    • 93

    Mostly Sunny

Today 8 Jul Yellow Medicine

Mostly cloudy. Highs in the upper 70s. North Winds 5 to 10 Mph.

Tonight 8 Jul Yellow Medicine

Mostly cloudy. Lows in the lower 60s. North Winds up 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

    71 °F

  • Highest 4 July, 2026

    76.8 °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

    58.5 °F
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