Gateway Lake Weather Forecast

    • 18
    • 30

    Increasing Clouds

    • 27
    • 44

    Mostly Cloudy

    • 8
    • 31

    Slight Chance Snow

    • 6
    • 19

    Partly Sunny

    • 11
    • 33

    Partly Sunny

    • 7
    • 25

    Partly Sunny

Today 14 Jan Dakota

Sunny, breezy and much cooler with Highs around 30. North Winds 15 to 25 Mph with Gusts up to 35 Mph, Diminishing to 10 to 15 Mph with Gusts up to 25 Mph this afternoon.

Tonight 14 Jan Dakota

Mostly clear in the Evening, then becoming mostly cloudy. Lows around 18. Northwest Winds around 5 Mph, becoming south after midnight.

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  • Temperature Real-Time

Gateway Lake Temperature Statistics

January Temperature

Sioux City, Sioux Gateway Airport (3.1 miles)

  • Lowest 11 January, 2026

    10 °F

  • Average January

    30.4 °F

  • Highest 7 January, 2026

    63 °F

Climate (2021–Present)

Sioux City, Sioux Gateway Airport (3.1 miles)

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  • Average Low 2021–2026

    39 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    62.8 °F
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