South Dewees Island Weather Forecast

    • 74
    • 88

    Rain Showers

    • 75
    • 86

    Thunderstorms Likely

    • 76
    • 89

    Slight Chance Thunderstorms

    • 77
    • 90

    Mostly Sunny

Today 13 Jul Charleston

Partly sunny in the Morning, then mostly cloudy with a chance of Showers and Thunderstorms in the afternoon. Highs in the upper 80s. Northwest Winds around 5 Mph, becoming south in the afternoon. Chance of rain 50 percent.

Tonight 13 Jul Charleston

Showers with Thunderstorms likely in the Evening, then Showers likely with a chance of Thunderstorms after midnight. Lows in the lower 70s. South Winds 5 to 10 Mph. Chance of rain 90 percent.

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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

    83.2 °F

  • Highest 8 July, 2026

    96.8 °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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