Upper Sioux Agency State Park Weather Forecast

    • 65
    • 91

    Patchy Smoke

    • 54
    • 79

    Mostly Sunny

    • 59
    • 79

    Mostly Sunny

    • 62
    • 84

    Chance Rain Showers

    • 65
    • 85

    Mostly Sunny

    • 70
    • 92

    Mostly Sunny

Today 20 Jul Yellow Medicine

Sunny. Patchy smoke through the day. Highs in the lower 90s. Northwest Winds 10 to 20 Mph.

Tonight 20 Jul Yellow Medicine

Clear. Patchy smoke. Lows in the mid 60s. Northwest Winds 10 to 20 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

    75.2 °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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