Horseshoe Lake Weather Forecast

    • 53
    • 80

    Mostly Sunny

    • 50
    • 83

    Breezy

    • 52
    • 89

    Mostly Sunny

    • 56
    • 89

    Chance Thunderstorms

    • 54
    • 86

    Rain Showers Likely

    • 45
    • 75

    Slight Chance Thunderstorms

Today 13 May Union

Sunny. Highs in the lower 80s. West Winds around 5 Mph.

Tonight 13 May Union

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 50s. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph, increasing to 15 to 20 Mph with Gusts up to 30 Mph after midnight.

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Horseshoe Lake Temperature Statistics

May Temperature

Sioux City, Sioux Gateway Airport (17.4 miles)

  • Lowest 2 May, 2026

    27.6 °F

  • Average May

    54.3 °F

  • Highest 11 May, 2026

    86 °F

Climate (2021–Present)

Sioux City, Sioux Gateway Airport (17.4 miles)

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  • Average Low 2021–2026

    39 °F

  • Average 2021–2026

    51.2 °F

  • Average High 2021–2026

    63.3 °F
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