Upper Sioux Agency State Park Weather Forecast

    • 70
    • 90

    Areas Smoke

    • 69
    • 95

    Mostly Sunny

    • 65
    • 87

    Mostly Sunny

    • 70
    • 90

    Partly Sunny

    • 65
    • 91

    Partly Sunny

    • 61
    • 83

    Mostly Sunny

Today 16 Jul Yellow Medicine

Sunny. Patchy smoke in the morning. Highs in the lower 90s. South Winds up to 10 Mph.

Tonight 16 Jul Yellow Medicine

Clear. Lows in the lower 70s. South Winds 5 to 10 Mph with Gusts to around 25 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

    72.5 °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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