Sand Hollow Reservoir Weather Forecast

    • 66
    • 84

    Rain Showers

    • 69
    • 90

    Mostly Sunny

    • 72
    • 93

    Mostly Sunny

    • 74
    • 97

    Hot

    • 74
    • 100

    Hot

    • 76
    • 101

    Hot

    • 76
    • 101

    Slight Chance Thunderstorms

Today 14 Aug Lower Washington County

Mostly cloudy. Scattered rain Showers and isolated Thunderstorms in the Morning, then rain Showers and scattered Thunderstorms in the afternoon. Some Thunderstorms may produce heavy rainfall. Highs in the mid 80s. Chance of precipitation 80 percent.

Tonight 14 Aug Lower Washington County

Mostly cloudy with scattered Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Some Thunderstorms may produce heavy rainfall in the evening. Lows in the upper 60s. Chance of precipitation 30 percent.

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Sand Hollow Reservoir Temperature Statistics

August Temperature

St George Municipal Airport (8.1 miles)

  • Lowest 1 August, 2026

    77 °F

  • Average August

    93.1 °F

  • Highest 1 August, 2026

    109.9 °F

Climate (2021–2026)

St George Municipal Airport (8.1 miles)

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  • Average Low 2021–2026

    53 °F

  • Average 2021–2026

    64.8 °F

  • Average High 2021–2026

    76.8 °F
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