Dakota Dunes Weather Forecast

    • 23
    • 32

    Decreasing Clouds

    • 22
    • 43

    Breezy

    • 15
    • 27

    Chance Snow

    • 1
    • 23

    Slight Chance Snow

    • -5
    • 10

    Cold

    • -2
    • 8

    Cold

Today 8 Dec Union

Mostly cloudy in the Morning, then becoming partly sunny. Not as cool with Highs in the lower 30s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 8 Dec Union

Mostly cloudy and not as cool. Near steady temperature in the upper 20s. Southwest Winds 5 to 10 Mph.

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Dakota Dunes Temperature Statistics

December Temperature

Sioux City, Sioux Gateway Airport (7.5 miles)

  • Lowest 4 December, 2025

    -9 °F

  • Average December

    17.3 °F

  • Highest 5 December, 2025

    39 °F

Climate (2020–Present)

Sioux City, Sioux Gateway Airport (7.5 miles)

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  • Average Low 2020–2025

    39 °F

  • Average 2020–2025

    50.9 °F

  • Average High 2020–2025

    62.7 °F
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