Upper Sioux Agency State Park Weather Forecast

    • 57
    • 77

    Mostly Cloudy

    • 62
    • 81

    Mostly Cloudy

    • 71
    • 85

    Chance Thunderstorms

    • 73
    • 97

    Chance Thunderstorms

    • 70
    • 99

    Chance Thunderstorms

    • 69
    • 94

    Chance Thunderstorms

Today 25 Jun Yellow Medicine

Partly sunny. Highs in the mid 70s. North Winds 5 to 10 Mph.

Tonight 25 Jun Yellow Medicine

Decreasing Clouds. Lows in the mid 50s. East Winds up to 5 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 °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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