Upper Sioux Agency State Park Weather Forecast

    • 50
    • 79

    Mostly Sunny

    • 62
    • 90

    Breezy

    • 42
    • 79

    Rain Showers Likely

    • 36
    • 60

    Partly Sunny

    • 36
    • 57

    Partly Sunny

    • 40
    • 60

    Chance Rain Showers

Today 21 Apr Yellow Medicine

Sunny. Highs in the upper 70s. North Winds 5 to 10 Mph.

Tonight 21 Apr Yellow Medicine

Warmer. Mostly clear. Lows in the lower 50s. Southeast Winds 5 to 15 Mph.

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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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