North Sioux City Weather Forecast

    • 50
    • 72

    Rain Showers Likely

    • 53
    • 77

    Mostly Sunny

    • 60
    • 84

    Mostly Sunny

    • 50
    • 80

    Mostly Sunny

    • 56
    • 80

    Chance Thunderstorms

    • 56
    • 81

    Chance Thunderstorms

Today 15 May Union

Mostly cloudy with a chance of Showers and Thunderstorms. Near steady temperature in the lower 70s. Southwest Winds 10 to 15 Mph. Chance of rain 50 percent.

Tonight 15 May Union

Mostly cloudy with a chance of Showers and Thunderstorms this Evening, then mostly clear after midnight. Lows around 50. West Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

North Sioux City Temperature Statistics

May Temperature

Sioux City, Sioux Gateway Airport (9.9 miles)

  • Lowest 5 May, 2024

    37.7 °F

  • Average May

    58.8 °F

  • Highest 11 May, 2024

    81.6 °F

Climate (2019–Present)

Sioux City, Sioux Gateway Airport (9.9 miles)

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  • Average Low 2019–2024

    39 °F

  • Average 2019–2024

    50.1 °F

  • Average High 2019–2024

    61.6 °F
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