St. George Airport Weather Forecast

    • 77
    • 99

    Hot

    • 75
    • 99

    Slight Chance Thunderstorms

    • 75
    • 98

    Slight Chance Thunderstorms

    • 75
    • 99

    Hot

    • 73
    • 96

    Chance Thunderstorms

    • 73
    • 93

    Rain Showers Likely

    • 72
    • 93

    Chance Thunderstorms

Today 17 Aug Dorchester

Sunny, hot with Highs around 101. Heat index Values up to 112. West Winds around 5 Mph.

Tonight 17 Aug Dorchester

Mostly clear. Lows in the upper 70s. Heat index Values up to 108 early this evening. Southwest Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

St. George Airport Temperature Statistics

August Temperature

Summerville Airport (16.2 miles)

  • Lowest 4 August, 2026

    71.6 °F

  • Average August

    80.4 °F

  • Highest 13 August, 2026

    96.8 °F

Climate (2021–2026)

Summerville Airport (16.2 miles)

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  • Average Low 2021–2026

    56 °F

  • Average 2021–2026

    65.8 °F

  • Average High 2021–2026

    77 °F
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