South Dewees Island Weather Forecast

    • 78
    • 88

    Partly Sunny

    • 80
    • 92

    Slight Chance Thunderstorms

    • 77
    • 93

    Chance Thunderstorms

    • 77
    • 90

    Slight Chance Thunderstorms

    • 78
    • 89

    Chance Thunderstorms

    • 77
    • 88

    Chance Thunderstorms

Today 27 Jul Charleston

Mostly sunny. A slight chance of Showers and Thunderstorms in the afternoon. Highs in the lower 90s. Heat index Values up to 106. North Winds around 5 Mph, becoming southeast in the afternoon. Chance of rain 20 percent.

Tonight 27 Jul Charleston

Mostly cloudy in the Evening, then clearing. Lows in the upper 70s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Dewees Island Temperature Statistics

July Temperature

Mount Pleasant Regional-Faison Field (5 miles)

  • Lowest 2 July, 2026

    69.8 °F

  • Average July

    83.7 °F

  • Highest 11 July, 2026

    98.6 °F

Climate (2021–2026)

Mount Pleasant Regional-Faison Field (5 miles)

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  • Average Low 2021–2026

    58.4 °F

  • Average 2021–2026

    66.5 °F

  • Average High 2021–2026

    75.6 °F
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