Upper Sioux Agency State Park Weather Forecast

    • 36
    • 61

    Decreasing Clouds

    • 34
    • 62

    Mostly Sunny

    • 50
    • 72

    Chance Rain Showers

    • 45
    • 76

    Breezy

    • 47
    • 73

    Partly Sunny

    • 53
    • 80

    Chance Rain Showers

Today 9 May Yellow Medicine

Cooler, sunny. Near steady temperature in the upper 50s. Northwest Winds 15 to 20 Mph.

Tonight 9 May Yellow Medicine

Colder. Mostly clear. Lows in the mid 30s. Northwest Winds up to 10 Mph. Gusts up to 25 Mph in the evening.

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  • Temperature Forecast NOAA

  • 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 °F

  • Highest 3 May, 2026

    72.1 °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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