St George Weather Forecast

    • 73
    • 91

    Chance Thunderstorms

    • 69
    • 88

    Rain Showers Likely

    • 72
    • 93

    Slight Chance Thunderstorms

    • 73
    • 96

    Partly Sunny

    • 77
    • 100

    Hot

    • 78
    • 102

    Hot

Today 13 Aug Lower Washington County

A chance of rain Showers and a slight chance of Thunderstorms in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Partly sunny. Highs around 90. Chance of precipitation 50 percent.

Tonight 13 Aug Lower Washington County

A chance of Showers and Thunderstorms in the Evening, then a chance of rain Showers and a slight chance of Thunderstorms after midnight. Mostly cloudy. Lows around 70. Chance of precipitation 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

St George Temperature Statistics

August Temperature

St George Municipal Airport (5 miles)

  • Lowest 1 August, 2026

    77 °F

  • Average August

    94.3 °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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