St George Weather Forecast

    • 75
    • 102

    Slight Chance Thunderstorms

    • 72
    • 98

    Hot

    • 69
    • 93

    Chance Thunderstorms

    • 70
    • 93

    Chance Rain Showers

    • 71
    • 92

    Chance Rain Showers

    • 73
    • 95

    Mostly Sunny

Today 29 Aug Lower Washington County

Sunny in the Morning, then partly cloudy with a 10 percent chance of Showers and Thunderstorms in the afternoon. Highs around 102. Southwest Winds 10 to 20 Mph late in the afternoon.

Tonight 29 Aug Lower Washington County

Partly cloudy with a 20 percent chance of Showers and Thunderstorms. Lows in the lower 70s. South Winds 10 to 20 Mph in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

St George Temperature Statistics

August Temperature

St George Municipal Airport (5 miles)

  • Lowest 15 August, 2026

    63 °F

  • Average August

    90 °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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