Upper Sioux Agency State Park Weather Forecast

    • 55
    • 76

    Mostly Cloudy

    • 59
    • 79

    Rain Showers

    • 56
    • 78

    Rain Showers

    • 54
    • 74

    Partly Sunny

    • 55
    • 76

    Partly Sunny

    • 62
    • 79

    Chance Rain Showers

Today 21 Jun Yellow Medicine

Mostly cloudy. A 20 percent chance of rain Showers late in the afternoon. Highs in the mid 70s. East Winds 5 to 15 Mph.

Tonight 21 Jun Yellow Medicine

Mostly cloudy. Lows in the lower 50s. Northeast Winds up to 10 Mph.

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Upper Sioux Agency State Park Temperature Statistics

June Temperature

Granite Falls, Granite Falls Municipal Airport/Lenzen-Roe Memorial Field (5.6 miles)

  • Lowest 15 June, 2026

    48.9 °F

  • Average June

    70.5 °F

  • Highest 9 June, 2026

    92.8 °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

    37.5 °F

  • Average 2021–2026

    48.1 °F

  • Average High 2021–2026

    58.6 °F
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