St. George Airport Weather Forecast

    • 75
    • 96

    Chance Thunderstorms

    • 75
    • 96

    Mostly Sunny

    • 75
    • 95

    Slight Chance Thunderstorms

    • 76
    • 95

    Chance Thunderstorms

    • 74
    • 94

    Rain Showers Likely

    • 72
    • 90

    Chance Thunderstorms

    • 72
    • 90

    Thunderstorms Likely

Today 18 Jul Dorchester

Mostly sunny with a slight chance of Showers and Thunderstorms. Highs in the mid 90s. Heat index Values up to 106. South Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent.

Tonight 18 Jul Dorchester

Mostly clear. A slight chance of Showers and Thunderstorms in the evening. Lows in the mid 70s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

St. George Airport Temperature Statistics

July Temperature

Summerville Airport (16.2 miles)

  • Lowest 2 July, 2026

    68 °F

  • Average July

    82.4 °F

  • Highest 9 July, 2026

    100.4 °F

Climate (2021–2026)

Summerville Airport (16.2 miles)

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  • Average Low 2021–2026

    56 °F

  • Average 2021–2026

    65.7 °F

  • Average High 2021–2026

    76.9 °F
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