South Dewees Island Weather Forecast

    • 40
    • 62

    Increasing Clouds

    • 31
    • 47

    Rain Showers

    • 33
    • 51

    Mostly Sunny

    • 33
    • 47

    Mostly Sunny

    • 41
    • 55

    Mostly Cloudy

    • 46
    • 60

    Mostly Cloudy

Today 17 Jan Charleston

Mostly sunny. Highs in the lower 60s. Southwest Winds 5 to 10 Mph.

Tonight 17 Jan Charleston

Mostly clear. Lows in the mid 30s, except around 40 near the coast. Southwest Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

South Dewees Island Temperature Statistics

January Temperature

Mount Pleasant Regional-Faison Field (5 miles)

  • Lowest 12 January, 2026

    32 °F

  • Average January

    54 °F

  • Highest 9 January, 2026

    77 °F

Climate (2021–Present)

Mount Pleasant Regional-Faison Field (5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    58.3 °F

  • Average 2021–2026

    66.4 °F

  • Average High 2021–2026

    75.4 °F
Get WillyWeather+ to remove ads