Upper Sioux Agency State Park Weather Forecast

    • 0
    • 17

    Blizzard

    • 1
    • 8

    Blowing Snow

    • 11
    • 35

    Mostly Cloudy

    • 2
    • 20

    Chance Snow

    • 2
    • 13

    Partly Sunny

    • 9
    • 20

    Mostly Cloudy

Today 28 Dec Yellow Medicine

Windy. Much Colder. Chance of snow late in the Morning, then snow likely in the afternoon. Blowing snow through the day. Visibility one quarter mile or less at Times. New snow accumulation of 1 to 3 Inches. Highs around 16. Northwest Winds 20 to 30 Mph with Gusts to around 50 Mph. Chance of snow 70 percent.

Tonight 28 Dec Yellow Medicine

Windy, Colder, cloudy. Snow in the Evening, then chance of snow after midnight. Blowing snow through the night. Visibility one quarter mile or less at Times. Snow accumulation of 2 to 3 Inches. Total snow accumulation 3 to 8 Inches. Lows around 1. Northwest Winds 25 to 35 Mph with Gusts to around 50 Mph. Chance of snow 90 percent.

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Upper Sioux Agency State Park Temperature Statistics

December Temperature

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

  • Lowest 4 December, 2025

    -12.1 °F

  • Average December

    17.8 °F

  • Highest 9 December, 2025

    40.1 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    37.3 °F

  • Average 2020–2025

    47.8 °F

  • Average High 2020–2025

    58.3 °F
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