Upper Sioux Agency State Park Weather Forecast

    • 50
    • 73

    Mostly Sunny

    • 53
    • 79

    Partly Sunny

    • 56
    • 75

    Chance Thunderstorms

    • 53
    • 76

    Rain Showers Likely

    • 52
    • 73

    Mostly Sunny

    • 57
    • 81

    Mostly Sunny

Today 14 Jun Yellow Medicine

Partly cloudy early in the morning then clearing. Highs in the lower 70s. Northwest Winds 5 to 15 Mph.

Tonight 14 Jun Yellow Medicine

Mostly clear. Lows around 50. West Winds 5 to 10 Mph. Gusts up to 25 Mph in the evening.

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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 11 June, 2026

    56.8 °F

  • Average June

    74.8 °F

  • Highest 9 June, 2026

    92.8 °F

Climate (2021–Present)

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

    58.7 °F
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