Sand Hollow Reservoir Weather Forecast

    • 60
    • 85

    Mostly Sunny

    • 64
    • 91

    Sunny

    • 65
    • 94

    Mostly Sunny

    • 62
    • 91

    Mostly Sunny

    • 63
    • 90

    Mostly Sunny

    • 66
    • 93

    Mostly Sunny

    • 67
    • 95

    Mostly Sunny

Today 20 May Lower Washington County

Sunny. Highs in the upper 80s.

Tonight 20 May Lower Washington County

Clear. Lows around 60.

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Sand Hollow Reservoir Temperature Statistics

May Temperature

St George Municipal Airport (8.1 miles)

  • Lowest 7 May, 2025

    48 °F
  • Average May

    70 °F
  • Highest 10 May, 2025

    95 °F

Climate (2020–Present)

St George Municipal Airport (8.1 miles)

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  • Average Low 2020–2025

    52.2 °F
  • Average 2020–2025

    64.3 °F
  • Average High 2020–2025

    76.6 °F
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