St George Weather Forecast

    • 57
    • 85

    Mostly Sunny

    • 61
    • 90

    Mostly Sunny

    • 62
    • 90

    Partly Sunny

    • 62
    • 93

    Sunny

    • 64
    • 95

    Mostly Sunny

    • 64
    • 94

    Mostly Sunny

Today 20 May Lower Washington County

Sunny. Highs in the mid 80s.

Tonight 20 May Lower Washington County

Mostly clear. Lows in the mid 50s.

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St George Temperature Statistics

May Temperature

St George Municipal Airport (5 miles)

  • Lowest 18 May, 2026

    48.9 °F

  • Average May

    75.5 °F

  • Highest 12 May, 2026

    100.9 °F

Climate (2021–Present)

St George Municipal Airport (5 miles)

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  • Average Low 2021–2026

    52.9 °F

  • Average 2021–2026

    64.8 °F

  • Average High 2021–2026

    76.9 °F
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