Upper Sioux Agency State Park Weather Forecast

    • 45
    • 76

    Blowing Dust

    • 50
    • 77

    Mostly Sunny

    • 52
    • 81

    Chance Rain Showers

    • 50
    • 83

    Breezy

    • 54
    • 81

    Chance Rain Showers

    • 48
    • 79

    Chance Rain Showers

Today 12 May Yellow Medicine

Windy, sunny. Patchy blowing dust. Highs in the mid 70s. Northwest Winds 25 to 30 Mph with Gusts to around 45 Mph.

Tonight 12 May Yellow Medicine

Cooler, clear. Lows in the mid 40s. Northwest Winds 15 to 20 Mph with Gusts to around 40 Mph decreasing to 5 to 10 Mph after midnight.

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  • Temperature Real-Time

Upper Sioux Agency State Park Temperature Statistics

May Temperature

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

  • Lowest 5 May, 2026

    29.1 °F

  • Average May

    50.9 °F

  • Highest 8 May, 2026

    75.2 °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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