Upper Sioux Agency State Park Weather Forecast

    • 74
    • 95

    Decreasing Clouds

    • 68
    • 92

    Partly Sunny

    • 67
    • 89

    Mostly Sunny

    • 70
    • 92

    Chance Rain Showers

    • 66
    • 85

    Chance Thunderstorms

    • 63
    • 83

    Mostly Sunny

    • 64
    • 83

    Mostly Sunny

Today 26 Jul Yellow Medicine

Mostly sunny. Highs in the mid 90s. South Winds 5 to 10 Mph.

Tonight 26 Jul Yellow Medicine

Partly cloudy. Lows in the mid 70s. South Winds 5 to 10 Mph shifting to the west after midnight.

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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 23 July, 2026

    50.9 °F

  • Average July

    74.1 °F

  • Highest 17 July, 2026

    94.3 °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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