Winyah Bay - Marsh Islands Weather Forecast

    • 63
    • 71

    Chance Rain Showers

    • 61
    • 74

    Rain Showers

    • 59
    • 71

    Slight Chance Thunderstorms

    • 65
    • 73

    Mostly Cloudy

    • 66
    • 77

    Partly Sunny

    • 65
    • 78

    Partly Sunny

    • 64
    • 78

    Partly Sunny

Today 30 Mar Coastal Georgetown

Partly sunny with a slight chance of Showers. A slight chance of Thunderstorms this afternoon. Highs in the mid 70s. South Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 30 Mar Coastal Georgetown

Cloudy. A chance of Showers this Evening, then Showers likely after midnight. Patchy fog after midnight. Lows in the lower 60s. South Winds 5 to 10 Mph. Chance of rain 60 percent.

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Winyah Bay - Marsh Islands Temperature Statistics

March Temperature

Georgetown County Airport (5.6 miles)

  • Lowest 3 March, 2025

    28.4 °F

  • Average March

    57 °F

  • Highest 8 March, 2025

    78.8 °F

Climate (2020–Present)

Georgetown County Airport (5.6 miles)

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  • Average Low 2020–2025

    54.6 °F

  • Average 2020–2025

    63.9 °F

  • Average High 2020–2025

    74.1 °F
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