Upper Sioux Agency State Park Weather Forecast

    • 58
    • 86

    Rain Showers Likely

    • 51
    • 71

    Patchy Smoke

    • 57
    • 76

    Partly Sunny

    • 61
    • 81

    Mostly Sunny

    • 63
    • 83

    Slight Chance Thunderstorms

    • 66
    • 85

    Chance Thunderstorms

    • 64
    • 84

    Partly Sunny

Today 3 Aug Yellow Medicine

Breezy. Mostly sunny. Near steady temperature in the mid 80s. South Winds 15 to 25 Mph with Gusts to around 40 Mph.

Tonight 3 Aug Yellow Medicine

Breezy. Increasing Clouds. Chance of Thunderstorms in the late evening and early morning. Rain Showers likely after midnight. Slight chance of Thunderstorms late in the night. Patchy smoke after midnight. Lows in the upper 50s. South Winds 15 to 25 Mph shifting to the northwest after midnight. Gusts up to 40 Mph. Chance of precipitation 60 percent.

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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 1 August, 2026

    61.5 °F

  • Average August

    72.4 °F

  • Highest 1 August, 2026

    82.4 °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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