Gateway Lake Weather Forecast

    • 37
    • 63

    Breezy

    • 43
    • 76

    Mostly Sunny

    • 44
    • 84

    Mostly Cloudy

    • 25
    • 56

    Slight Chance Rain Showers

    • 30
    • 54

    Chance Rain Showers

    • 37
    • 56

    Chance Rain Showers

Today 28 Mar Dakota

Mostly sunny and windy. Much warmer with Highs in the mid 60s. South Winds 20 to 30 Mph with Gusts up to 45 Mph.

Tonight 28 Mar Dakota

Mostly cloudy in the Evening, then clearing. Breezy and not as cool with Lows in the upper 30s. South Winds 15 to 25 Mph. Gusts up to 40 Mph in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Gateway Lake Temperature Statistics

March Temperature

Sioux City, Sioux Gateway Airport (3.1 miles)

  • Lowest 16 March, 2026

    5.6 °F

  • Average March

    42.8 °F

  • Highest 21 March, 2026

    95.6 °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

    63.2 °F
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