St George Weather Forecast

    • 81
    • 108

    Isolated Thunderstorms

    • 80
    • 105

    Isolated Thunderstorms

    • 74
    • 102

    Chance Thunderstorms

    • 72
    • 98

    Chance Rain Showers

    • 71
    • 95

    Chance Thunderstorms

    • 71
    • 94

    Slight Chance Thunderstorms

Today 27 Aug Lower Washington County

Sunny in the Morning, then partly cloudy with isolated Showers and Thunderstorms in the afternoon. Highs around 107. Chance of precipitation 20 percent.

Tonight 27 Aug Lower Washington County

Partly cloudy in the evening then becoming mostly cloudy. Lows around 80.

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St George Temperature Statistics

August Temperature

St George Municipal Airport (5 miles)

  • Lowest 15 August, 2026

    63 °F

  • Average August

    89.9 °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

    76.9 °F
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