Upper Sioux Agency State Park Weather Forecast

    • 51
    • 90

    Increasing Clouds

    • 55
    • 82

    Rain Showers

    • 51
    • 78

    Rain Showers

    • 46
    • 69

    Rain Showers

    • 38
    • 59

    Breezy

    • 42
    • 62

    Partly Sunny

Today 15 May Yellow Medicine

Sunny. Near steady temperature in the mid 80s. West Winds around 15 Mph.

Tonight 15 May Yellow Medicine

Partly cloudy in the evening then clearing. Lows in the lower 50s. West Winds 5 to 15 Mph. Gusts up to 30 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

    54.3 °F

  • Highest 13 May, 2026

    78.3 °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

    48.2 °F

  • Average High 2021–2026

    58.7 °F
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