Upper Sioux Agency State Park Weather Forecast

    • 69
    • 90

    Patchy Smoke

    • 62
    • 85

    Rain Showers

    • 59
    • 79

    Chance Rain Showers

    • 60
    • 82

    Mostly Sunny

    • 64
    • 82

    Mostly Sunny

    • 64
    • 84

    Chance Thunderstorms

    • 57
    • 77

    Chance Rain Showers

Today 29 Jul Yellow Medicine

Partly sunny. Patchy smoke. Near steady temperature around 90. South Winds 5 to 10 Mph.

Tonight 29 Jul Yellow Medicine

Partly cloudy. Patchy smoke. Lows around 70. South Winds 5 to 15 Mph.

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Upper Sioux Agency State Park Temperature Statistics

July Temperature

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

  • Lowest 23 July, 2026

    50.9 °F

  • Average July

    75.2 °F

  • Highest 17 July, 2026

    94.3 °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

    37.4 °F

  • Average 2021–2026

    48 °F

  • Average High 2021–2026

    58.5 °F
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