North Sioux City Weather Forecast

    • 43
    • 65

    Breezy

    • 34
    • 57

    Partly Sunny

    • 42
    • 59

    Mostly Cloudy

    • 37
    • 59

    Partly Sunny

    • 39
    • 58

    Partly Sunny

    • 45
    • 68

    Mostly Sunny

Today 30 Sep Union

Windy, sunny. Highs around 66. Northwest Winds 15 to 25 Mph becoming 20 to 30 Mph in the afternoon. Gusts around 40 Mph.

Tonight 30 Sep Union

Mostly clear. Lows around 40. Northwest Winds 10 to 15 Mph. Gusts around 30 Mph.

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North Sioux City Temperature Statistics

September Temperature

Sioux City, Sioux Gateway Airport (9.9 miles)

  • Lowest 8 September, 2020

    44.1 °F
  • Average September

    61.9 °F
  • Highest 5 September, 2020

    90 °F

Climate (2010–Present)

Sioux City, Sioux Gateway Airport (9.9 miles)

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  • Average Low 2010–Present

    40.3 °F
  • Average 2010–Present

    50.1 °F
  • Average High 2010–Present

    60.6 °F
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