Gateway Lake Weather Forecast

    • 30
    • 63

    Gradual Clearing

    • 39
    • 67

    Partly Sunny

    • 43
    • 64

    Mostly Cloudy

    • 41
    • 70

    Chance Rain

    • 30
    • 58

    Partly Sunny

    • 23
    • 47

    Chance Rain/Snow

Today 14 Feb Dakota

Mostly cloudy this Morning, then becoming partly sunny. A slight chance of Sprinkles. Highs in the lower 60s. South Winds around 5 Mph.

Tonight 14 Feb Dakota

Partly cloudy in the Evening, then becoming mostly clear. Lows in the lower 30s. Northwest Winds around 5 Mph.

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Gateway Lake Temperature Statistics

February Temperature

Sioux City, Sioux Gateway Airport (3.1 miles)

  • Lowest 1 February, 2026

    12.7 °F

  • Average February

    35.3 °F

  • Highest 9 February, 2026

    73.9 °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

    51 °F

  • Average High 2021–2026

    63 °F
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