St George Weather Forecast

    • 69
    • 93

    Partly Sunny

    • 67
    • 90

    Rain Showers

    • 60
    • 78

    Rain Showers

    • 59
    • 80

    Chance Rain Showers

    • 60
    • 85

    Sunny

    • 62
    • 88

    Mostly Sunny

Today 26 Sep Lower Washington County

Sunny in the morning then becoming partly cloudy. Highs in the lower 90s.

Tonight 26 Sep Lower Washington County

Partly cloudy. Lows in the upper 60s.

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St George Temperature Statistics

September Temperature

St George Municipal Airport (5 miles)

  • Lowest 22 September, 2026

    60.1 °F

  • Average September

    81.7 °F

  • Highest 10 September, 2026

    102.9 °F

Climate (2021–2026)

St George Municipal Airport (5 miles)

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  • Average Low 2021–2026

    53.1 °F

  • Average 2021–2026

    64.8 °F

  • Average High 2021–2026

    76.8 °F
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