Big Sioux River Corridor Weather Forecast

    • 65
    • 92

    Thunderstorms Likely

    • 61
    • 82

    Rain Showers Likely

    • 60
    • 79

    Chance Thunderstorms

    • 68
    • 89

    Chance Thunderstorms

    • 73
    • 94

    Mostly Sunny

    • 75
    • 97

    Hot

Today 16 Jun Plymouth

Partly sunny. A chance of Showers and Thunderstorms this afternoon. Highs around 90. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 40 percent.

Tonight 16 Jun Plymouth

Mostly cloudy with a chance of Thunderstorms. Showers Likely, mainly in the evening. Humid with Lows in the mid 60s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming northeast after midnight. Chance of rain 70 percent.

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Big Sioux River Corridor Temperature Statistics

June Temperature

Sioux City, Sioux Gateway Airport (19.3 miles)

  • Lowest 4 June, 2025

    46.7 °F

  • Average June

    69.6 °F

  • Highest 2 June, 2025

    94.6 °F

Climate (2020–Present)

Sioux City, Sioux Gateway Airport (19.3 miles)

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  • Average Low 2020–2025

    38.7 °F

  • Average 2020–2025

    50.6 °F

  • Average High 2020–2025

    62.6 °F
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