Upper Sioux Agency State Park Weather Forecast

    • 26
    • 42

    Increasing Clouds

    • 20
    • 36

    Mostly Cloudy

    • 18
    • 32

    Chance Snow

    • 7
    • 24

    Slight Chance Snow

    • 23
    • 28

    Mostly Cloudy

    • 28
    • 42

    Partly Sunny

    • 25
    • 39

    Mostly Cloudy

Today 7 Jan Yellow Medicine

Sunny. Near steady temperature in the mid 40s. South Winds 5 to 10 Mph.

Tonight 7 Jan Yellow Medicine

Partly cloudy. Lows in the upper 20s. South Winds up to 10 Mph shifting to the west after midnight.

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Upper Sioux Agency State Park Temperature Statistics

January Temperature

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

  • Lowest 5 January, 2026

    33.8 °F

  • Average January

    33.9 °F

  • Highest 5 January, 2026

    34.2 °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

    37.4 °F

  • Average 2021–2026

    48 °F

  • Average High 2021–2026

    58.4 °F
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