Upper Sioux Agency State Park Weather Forecast

    • 55
    • 79

    Mostly Sunny

    • 56
    • 79

    Mostly Sunny

    • 63
    • 84

    Chance Rain Showers

    • 66
    • 85

    Mostly Sunny

    • 70
    • 95

    Mostly Sunny

Today 21 Jul Yellow Medicine

Not as warm. Sunny. Near steady temperature in the upper 70s. Northwest Winds 15 to 20 Mph.

Tonight 21 Jul Yellow Medicine

Mostly clear. Lows in the mid 50s. North Winds 5 to 15 Mph decreasing to up to 5 Mph 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 2 July, 2026

    62.8 °F

  • Average July

    75.3 °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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