Gateway Lake Weather Forecast

    • 63
    • 85

    Mostly Sunny

    • 66
    • 88

    Rain Showers Likely

    • 57
    • 77

    Rain Showers

    • 56
    • 74

    Mostly Cloudy

    • 62
    • 81

    Partly Sunny

    • 66
    • 85

    Slight Chance Thunderstorms

Today 2 Aug Dakota

Mostly sunny. Highs in the mid 80s. Southwest Winds around 5 Mph, becoming southeast in the afternoon.

Tonight 2 Aug Dakota

Partly cloudy. Lows in the upper 50s. Light and variable Winds.

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Gateway Lake Temperature Statistics

August Temperature

Sioux City, Sioux Gateway Airport (3.1 miles)

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  • Average August

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Climate (2021–2026)

Sioux City, Sioux Gateway Airport (3.1 miles)

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  • Average Low 2021–2026

    39.1 °F

  • Average 2021–2026

    51.2 °F

  • Average High 2021–2026

    63.4 °F
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