Cape Island Weather Forecast

    • 72
    • 84

    Partly Sunny

    • 73
    • 84

    Partly Sunny

    • 70
    • 84

    Chance Thunderstorms

    • 68
    • 79

    Chance Thunderstorms

    • 70
    • 78

    Chance Thunderstorms

    • 70
    • 80

    Chance Thunderstorms

    • 69
    • 81

    Slight Chance Thunderstorms

Today 5 Sep Charleston

Sunny. Highs in the upper 80s. Southeast Winds 5 to 10 Mph.

Tonight 5 Sep Charleston

Mostly clear. Lows in the lower 70s. Southeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cape Island Temperature Statistics

September Temperature

Georgetown County Airport (18 miles)

  • Lowest 1 September, 2025

    59 °F

  • Average September

    70.4 °F

  • Highest 2 September, 2025

    82.4 °F

Climate (2020–Present)

Georgetown County Airport (18 miles)

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  • Average Low 2020–2025

    54.7 °F

  • Average 2020–2025

    64 °F

  • Average High 2020–2025

    74.2 °F
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