Upper Sioux Agency State Park Weather Forecast

    • 56
    • 79

    Patchy Smoke

    • 61
    • 83

    Mostly Sunny

    • 63
    • 84

    Rain Showers Likely

    • 61
    • 81

    Partly Sunny

    • 61
    • 80

    Slight Chance Thunderstorms

    • 59
    • 80

    Partly Sunny

Today 7 Aug Yellow Medicine

Mostly sunny. A 20 percent chance of Showers in the morning. Patchy smoke in the morning. Highs in the upper 70s. Northwest Winds 5 to 15 Mph with Gusts to around 30 Mph.

Tonight 7 Aug Yellow Medicine

Clear. Lows in the upper 50s. Northwest Winds up to 5 Mph with Gusts to around 20 Mph shifting to the west after midnight.

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Upper Sioux Agency State Park Temperature Statistics

August Temperature

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

  • Lowest 4 August, 2026

    54.7 °F

  • Average August

    72.3 °F

  • Highest 3 August, 2026

    85.1 °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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