Upper Sioux Agency State Park Weather Forecast

    • 58
    • 73

    Chance Rain Showers

    • 58
    • 84

    Partly Sunny

    • 54
    • 75

    Slight Chance Thunderstorms

Today 11 Jun Yellow Medicine

Cooler. Mostly cloudy. Chance of Showers in the Morning, then chance of Showers and slight chance of Thunderstorms in the afternoon. Highs in the lower 70s. West Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon. Chance of precipitation 50 percent.

Tonight 11 Jun Yellow Medicine

Mostly cloudy. Near steady temperature in the lower 60s. Southwest Winds 5 to 10 Mph.

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Upper Sioux Agency State Park Temperature Statistics

June Temperature

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

  • Lowest 1 June, 2026

    62.1 °F

  • Average June

    75 °F

  • Highest 2 June, 2026

    88.2 °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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