Big Sioux River Corridor Weather Forecast

    • 54
    • 78

    Chance Rain Showers

    • 58
    • 82

    Mostly Cloudy

    • 53
    • 71

    Rain Showers Likely

    • 55
    • 75

    Slight Chance Thunderstorms

    • 54
    • 78

    Chance Thunderstorms

    • 55
    • 80

    Chance Thunderstorms

Today 19 Jun Plymouth

Partly sunny this Morning, then mostly cloudy with a chance of Showers this afternoon. Highs in the mid 70s. Southwest Winds 5 to 10 Mph, becoming northwest with Gusts up to 20 Mph this afternoon. Chance of rain 50 percent.

Tonight 19 Jun Plymouth

Partly cloudy. Lows in the lower 50s. Southwest Winds 5 to 10 Mph, becoming north after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Sioux River Corridor Temperature Statistics

June Temperature

Sioux City, Sioux Gateway Airport (19.3 miles)

  • Lowest 15 June, 2026

    46.9 °F

  • Average June

    73.2 °F

  • Highest 9 June, 2026

    95.6 °F

Climate (2021–2026)

Sioux City, Sioux Gateway Airport (19.3 miles)

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  • Average Low 2021–2026

    39 °F

  • Average 2021–2026

    51.2 °F

  • Average High 2021–2026

    63.4 °F
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