Upper Sioux Agency State Park Weather Forecast

    • 51
    • 73

    Mostly Sunny

    • 52
    • 79

    Chance Rain Showers

    • 56
    • 77

    Chance Rain Showers

    • 54
    • 73

    Slight Chance Rain Showers

    • 57
    • 76

    Chance Rain Showers

    • 56
    • 76

    Chance Rain Showers

Today 18 Jun Yellow Medicine

Mostly sunny. Slight chance of rain Showers early in the afternoon. Chance of rain Showers and slight chance of Thunderstorms late in the afternoon. Highs in the lower 70s. Northwest Winds 5 to 15 Mph. Chance of precipitation 40 percent.

Tonight 18 Jun Yellow Medicine

Mostly clear. Lows around 50. Northwest Winds up to 10 Mph shifting to the southwest after midnight.

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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 15 June, 2026

    48.9 °F

  • Average June

    72.2 °F

  • Highest 9 June, 2026

    92.8 °F

Climate (2021–2026)

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

    58.6 °F
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