St George Weather Forecast

    • 80
    • 105

    Hot

    • 79
    • 105

    Hot

    • 77
    • 103

    Hot

    • 78
    • 104

    Hot

    • 79
    • 106

    Hot

    • 79
    • 106

    Hot

Today 22 Aug Lower Washington County

Partly cloudy in the morning then becoming sunny. Highs around 105.

Tonight 22 Aug Lower Washington County

Partly cloudy. Lows in the upper 70s.

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St George Temperature Statistics

August Temperature

St George Municipal Airport (5 miles)

  • Lowest 15 August, 2026

    63 °F

  • Average August

    89.5 °F

  • Highest 1 August, 2026

    109.9 °F

Climate (2021–2026)

St George Municipal Airport (5 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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