South Dewees Island Weather Forecast

    • 42
    • 57

    Becoming Sunny

    • 49
    • 62

    Mostly Sunny

    • 54
    • 66

    Mostly Sunny

    • 60
    • 73

    Partly Sunny

    • 62
    • 76

    Mostly Sunny

    • 51
    • 77

    Chance Rain Showers

    • 51
    • 64

    Slight Chance Rain Showers

Today 18 Mar Charleston

Mostly sunny. Highs in the upper 50s. Northeast Winds 5 to 10 Mph.

Tonight 18 Mar Charleston

Mostly cloudy this Evening, then clearing. Lows around 40. Northeast Winds around 5 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 13 March, 2026

    41 °F

  • Average March

    64.5 °F

  • Highest 10 March, 2026

    84.2 °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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