Upper Sioux Agency State Park Weather Forecast

    • 55
    • 79

    Mostly Sunny

    • 62
    • 82

    Chance Rain Showers

    • 68
    • 84

    Mostly Sunny

    • 71
    • 98

    Mostly Sunny

Today 22 Jul Yellow Medicine

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

Tonight 22 Jul Yellow Medicine

Clear. Lows in the mid 50s. East Winds up to 5 Mph shifting to the south 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

    75.6 °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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