South Dewees Island Weather Forecast

    • 48
    • 65

    Increasing Clouds

    • 42
    • 61

    Chance Rain Showers

    • 38
    • 49

    Rain Showers

    • 39
    • 59

    Rain Showers

    • 25
    • 51

    Mostly Sunny

    • 32
    • 44

    Mostly Sunny

    • 34
    • 52

    Partly Sunny

Today 22 Jan Charleston

Sunny. Highs in the upper 60s. North Winds around 5 Mph.

Tonight 22 Jan Charleston

Partly cloudy. Lows in the mid 40s. Northeast Winds around 5 Mph.

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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

    50.9 °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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