Gateway Lake Weather Forecast

    • 38
    • 72

    Decreasing Clouds

    • 41
    • 73

    Mostly Sunny

    • 59
    • 85

    Partly Sunny

    • 48
    • 82

    Mostly Sunny

    • 50
    • 80

    Partly Sunny

    • 57
    • 87

    Chance Rain Showers

    • 57
    • 93

    Partly Sunny

Today 9 May Dakota

Partly sunny. Near steady temperature around 70. North Winds around 15 Mph with Gusts up to 25 Mph.

Tonight 9 May Dakota

Mostly clear. Lows in the upper 30s. North Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming northwest around 5 Mph after midnight.

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  • Temperature Real-Time

Gateway Lake Temperature Statistics

May Temperature

Sioux City, Sioux Gateway Airport (3.1 miles)

  • Lowest 2 May, 2026

    27.6 °F

  • Average May

    51.1 °F

  • Highest 3 May, 2026

    74.6 °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

    51.1 °F

  • Average High 2021–2026

    63.3 °F
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