Horseshoe Lake Weather Forecast

    • 68
    • 88

    Slight Chance Thunderstorms

    • 67
    • 87

    Rain Showers Likely

    • 63
    • 77

    Rain Showers Likely

    • 64
    • 75

    Rain Showers Likely

    • 62
    • 77

    Chance Thunderstorms

    • 60
    • 75

    Slight Chance Thunderstorms

Today 11 Aug Union

Patchy fog early this morning. Mostly sunny. Highs in the mid 80s. Northeast Winds 5 to 10 Mph.

Tonight 11 Aug Union

Partly cloudy in the Evening, then mostly cloudy with a slight chance of Showers and Thunderstorms after midnight. Humid with Lows in the upper 60s. Northeast Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Horseshoe Lake Temperature Statistics

August Temperature

Sioux City, Sioux Gateway Airport (17.4 miles)

  • Lowest 8 August, 2026

    50.6 °F

  • Average August

    70.8 °F

  • Highest 3 August, 2026

    87.7 °F

Climate (2021–2026)

Sioux City, Sioux Gateway Airport (17.4 miles)

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  • Average Low 2021–2026

    39.1 °F

  • Average 2021–2026

    51.2 °F

  • Average High 2021–2026

    63.4 °F
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