Upper Sioux Agency State Park Weather Forecast

    • 68
    • 88

    Slight Chance Thunderstorms

    • 69
    • 90

    Mostly Sunny

    • 69
    • 91

    Chance Thunderstorms

    • 65
    • 86

    Chance Rain Showers

    • 65
    • 81

    Chance Rain Showers

    • 61
    • 81

    Chance Rain Showers

Today 3 Sep Yellow Medicine

Mostly cloudy with chance of Showers and slight chance of Thunderstorms in the Morning, then sunny in the afternoon. Highs in the upper 80s. Southeast Winds up to 10 Mph. Chance of precipitation 50 percent.

Tonight 3 Sep Yellow Medicine

Partly cloudy. Lows in the upper 60s. Southeast Winds up to 10 Mph.

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Upper Sioux Agency State Park Temperature Statistics

September Temperature

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

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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

    58.4 °F
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