Upper Sioux Agency State Park Weather Forecast

    • 69
    • 91

    Patchy Smoke

    • 71
    • 91

    Areas Smoke

    • 70
    • 94

    Mostly Sunny

    • 67
    • 90

    Mostly Sunny

    • 70
    • 91

    Partly Sunny

    • 63
    • 86

    Partly Sunny

Today 15 Jul Yellow Medicine

Sunny. Highs in the lower 90s. Southwest Winds up to 5 Mph with Gusts to around 20 Mph shifting to the south in the afternoon.

Tonight 15 Jul Yellow Medicine

Clear. Lows in the upper 60s. South Winds up to 10 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 2 July, 2026

    62.8 °F

  • Average July

    71.6 °F

  • Highest 13 July, 2026

    89.2 °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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