Upper Sioux Agency State Park Weather Forecast

    • 51
    • 77

    Chance Rain Showers

    • 57
    • 77

    Chance Rain Showers

    • 54
    • 73

    Slight Chance Rain Showers

    • 57
    • 76

    Chance Rain Showers

    • 55
    • 75

    Chance Rain Showers

    • 55
    • 76

    Slight Chance Thunderstorms

Today 19 Jun Yellow Medicine

Mostly cloudy with chance of rain Showers and slight chance of Thunderstorms in the Morning, then mostly sunny in the afternoon. Highs in the upper 70s. Southwest Winds 5 to 10 Mph increasing to west 15 to 20 Mph in the afternoon. Chance of precipitation 50 percent.

Tonight 19 Jun Yellow Medicine

Clear. Lows in the lower 50s. Northwest Winds 5 to 15 Mph. Gusts up to 30 Mph in the evening.

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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

    71.7 °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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