Gateway Lake Weather Forecast

    • 31
    • 54

    Breezy

    • 30
    • 59

    Mostly Sunny

    • 50
    • 73

    Mostly Sunny

    • 52
    • 82

    Mostly Sunny

    • 61
    • 85

    Chance Rain Showers

    • 42
    • 81

    Chance Thunderstorms

Today 18 Apr Dakota

Sunny, breezy with Highs in the mid 50s. Northwest Winds around 25 Mph with Gusts up to 40 Mph.

Tonight 18 Apr Dakota

Mostly clear and breezy. Lows in the lower 30s. Northwest Winds 20 to 25 Mph with Gusts up to 35 Mph, becoming southwest 5 to 10 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Gateway Lake Temperature Statistics

April Temperature

Sioux City, Sioux Gateway Airport (3.1 miles)

  • Lowest 9 April, 2026

    26.7 °F

  • Average April

    50.5 °F

  • Highest 13 April, 2026

    89.7 °F

Climate (2021–Present)

Sioux City, Sioux Gateway Airport (3.1 miles)

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  • Average Low 2021–2026

    39.1 °F

  • Average 2021–2026

    51.1 °F

  • Average High 2021–2026

    63.3 °F
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