North Sioux City Weather Forecast

    • 53
    • 72

    Partly Sunny

    • 53
    • 73

    Partly Sunny

    • 62
    • 81

    Mostly Sunny

    • 67
    • 86

    Mostly Sunny

    • 66
    • 87

    Partly Sunny

    • 63
    • 86

    Partly Sunny

Today 26 Sep Union

Partly sunny. Patchy fog this morning. A slight chance of Sprinkles this afternoon. Highs in the lower 70s. North Winds 5 to 10 Mph.

Tonight 26 Sep Union

Partly cloudy. Lows in the lower 50s. Northeast Winds around 5 Mph.

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North Sioux City Temperature Statistics

September Temperature

Sioux City, Sioux Gateway Airport (9.9 miles)

  • Lowest 7 September, 2023

    43.6 °F

  • Average September

    69.9 °F

  • Highest 2 September, 2023

    102.7 °F

Climate (2010–Present)

Sioux City, Sioux Gateway Airport (9.9 miles)

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  • Average Low 2010–Present

    39.3 °F

  • Average 2010–Present

    50.6 °F

  • Average High 2010–Present

    62.3 °F
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