South Dewees Island Weather Forecast

    • 56
    • 66

    Increasing Clouds

    • 60
    • 72

    Mostly Sunny

    • 54
    • 78

    Mostly Sunny

    • 50
    • 64

    Mostly Sunny

    • 55
    • 65

    Partly Sunny

    • 58
    • 70

    Mostly Sunny

Today 25 Mar Charleston

Mostly cloudy this Morning, then becoming mostly sunny. Highs in the upper 60s. Northeast Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 25 Mar Charleston

Partly cloudy in the Evening, then becoming mostly clear. Patchy fog after midnight. Lows in the mid 50s. East Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Dewees Island Temperature Statistics

March Temperature

Mount Pleasant Regional-Faison Field (5 miles)

  • Lowest 18 March, 2026

    33.8 °F

  • Average March

    63.4 °F

  • Highest 21 March, 2026

    86 °F

Climate (2021–Present)

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

    75.4 °F
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