South Dewees Island Weather Forecast

    • 79
    • 93

    Chance Thunderstorms

    • 78
    • 93

    Chance Thunderstorms

    • 77
    • 89

    Mostly Sunny

    • 77
    • 89

    Mostly Sunny

    • 78
    • 90

    Mostly Sunny

    • 79
    • 91

    Mostly Sunny

    • 80
    • 90

    Mostly Sunny

Today 28 Jun Charleston

Mostly sunny. Highs in the mid 90s. Heat index Values up to 109. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 28 Jun Charleston

Partly cloudy this Evening, then becoming mostly cloudy. A chance of Showers and Thunderstorms. Lows in the upper 70s. Heat index Values up to 105 early this evening. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

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South Dewees Island Temperature Statistics

June Temperature

Mount Pleasant Regional-Faison Field (5 miles)

  • Lowest 3 June, 2026

    55.4 °F

  • Average June

    78.8 °F

  • Highest 12 June, 2026

    95 °F

Climate (2021–2026)

Mount Pleasant Regional-Faison Field (5 miles)

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  • Average Low 2021–2026

    58.3 °F

  • Average 2021–2026

    66.4 °F

  • Average High 2021–2026

    75.5 °F
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