Dakota Dunes Weather Forecast

    • 51
    • 80

    Increasing Clouds

    • 25
    • 67

    Breezy

    • 28
    • 52

    Mostly Sunny

    • 40
    • 62

    Mostly Cloudy

    • 47
    • 77

    Partly Sunny

    • 51
    • 83

    Slight Chance Rain

Today 25 Mar Union

Mostly sunny. Much warmer with Highs around 80. South Winds around 5 Mph.

Tonight 25 Mar Union

Partly cloudy. Not as cool with Lows around 50. South Winds around 5 Mph, increasing to 10 to 15 Mph after midnight.

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Dakota Dunes Temperature Statistics

March Temperature

Sioux City, Sioux Gateway Airport (7.5 miles)

  • Lowest 16 March, 2026

    5.6 °F

  • Average March

    41.5 °F

  • Highest 21 March, 2026

    95.6 °F

Climate (2021–Present)

Sioux City, Sioux Gateway Airport (7.5 miles)

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  • Average Low 2021–2026

    39.1 °F

  • Average 2021–2026

    51.1 °F

  • Average High 2021–2026

    63.2 °F
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