St George Weather Forecast

    • 57
    • 77

    Slight Chance Thunderstorms

    • 62
    • 86

    Mostly Sunny

    • 65
    • 92

    Sunny

    • 67
    • 97

    Hot

    • 68
    • 99

    Hot

    • 69
    • 101

    Hot

    • 70
    • 101

    Hot

Today 29 May Lower Washington County

Partly sunny in the Morning, then partly cloudy with a 20 percent chance of Showers and Thunderstorms in the afternoon. Highs in the mid 70s.

Tonight 29 May Lower Washington County

Mostly clear. Lows in the mid 50s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

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

    53 °F

  • Average 2021–2026

    64.8 °F

  • Average High 2021–2026

    76.9 °F
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