South Dewees Island Weather Forecast

    • 42
    • 52

    Rain Showers

    • 25
    • 50

    Slight Chance Rain

    • 30
    • 41

    Mostly Sunny

    • 31
    • 45

    Mostly Sunny

    • 31
    • 44

    Partly Sunny

    • 25
    • 46

    Partly Sunny

    • 26
    • 40

    Slight Chance Rain Showers

Today 25 Jan Charleston

Cloudy. Areas of dense fog. Highs in the lower 50s. South Winds 10 to 15 Mph.

Tonight 25 Jan Charleston

Rain. Areas of fog. Lows around 40. West Winds 5 to 10 Mph. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Dewees Island Temperature Statistics

January Temperature

Mount Pleasant Regional-Faison Field (5 miles)

  • Lowest 16 January, 2026

    24.8 °F

  • Average January

    51.1 °F

  • Highest 9 January, 2026

    77 °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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