Upper Sioux Agency State Park Weather Forecast

    • 42
    • 61

    Chance Rain Showers

    • 45
    • 57

    Chance Rain Showers

    • 51
    • 68

    Rain Showers

    • 38
    • 60

    Rain Showers

    • 36
    • 56

    Partly Sunny

    • 36
    • 59

    Partly Sunny

Today 24 Apr Yellow Medicine

Much cooler. Sunny. Highs around 60. Northwest Winds 5 to 15 Mph.

Tonight 24 Apr Yellow Medicine

Partly cloudy in the Evening, then cloudy with a 40 percent chance of rain Showers after midnight. Lows in the lower 40s. North Winds 5 to 10 Mph shifting to the northwest after midnight.

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  • Temperature Real-Time

Upper Sioux Agency State Park Temperature Statistics

April Temperature

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

  • Lowest 7 April, 2026

    15.8 °F

  • Average April

    43.7 °F

  • Highest 16 April, 2026

    88.3 °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

    48.1 °F

  • Average High 2021–2026

    58.7 °F
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