Gateway Lake Weather Forecast

    • 10
    • 38

    Chance Snow

    • -12
    • 24

    Mostly Cloudy

    • -9
    • 0

    Slight Chance Snow

    • -5
    • 10

    Cold

    • -4
    • 13

    Partly Sunny

    • 9
    • 27

    Partly Sunny

Today 21 Jan Dakota

Mostly sunny. A chance of snow this afternoon. Windy and not as cool with Highs in the upper 30s. Temperature falling to around 30 this afternoon. West Winds 20 to 25 Mph with Gusts up to 45 Mph, increasing to northwest 30 to 35 Mph with Gusts up to 55 Mph this afternoon. Chance of snow 30 percent.

Tonight 21 Jan Dakota

Mostly clear and Breezy, Colder with Lows around 10 above. Northwest Winds 20 to 25 Mph with Gusts up to 40 Mph, becoming west 5 to 10 Mph with Gusts up to 20 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Gateway Lake Temperature Statistics

January Temperature

Sioux City, Sioux Gateway Airport (3.1 miles)

  • Lowest 17 January, 2026

    3 °F

  • Average January

    28.8 °F

  • Highest 7 January, 2026

    63 °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

    50.9 °F

  • Average High 2021–2026

    62.8 °F
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