Sioux City Weather Forecast

    • 15
    • 27

    Snow

    • 9
    • 38

    Slight Chance Snow

    • -11
    • 24

    Mostly Cloudy

    • -8
    • 1

    Cold

    • -4
    • 10

    Cold

    • 2
    • 20

    Partly Sunny

Today 20 Jan Woodbury

Partly sunny Early, then becoming cloudy. A chance of snow. Little or no snow accumulation. Not as cool with Highs in the mid 20s. South Winds 5 to 10 Mph. Chance of snow 50 percent.

Tonight 20 Jan Woodbury

Mostly cloudy with snow in the Evening, then partly cloudy after midnight. Little or no snow accumulation. Not as cold with Lows around 13. Southwest Winds 5 to 10 Mph, becoming northwest with Gusts up to 20 Mph after midnight. Chance of snow 90 percent.

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Sioux City Temperature Statistics

January Temperature

Sioux City, Sioux Gateway Airport (6.2 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 (6.2 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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