Cape Island Weather Forecast

    • 76
    • 85

    Chance Thunderstorms

    • 76
    • 86

    Chance Thunderstorms

    • 75
    • 88

    Mostly Sunny

    • 72
    • 82

    Mostly Sunny

    • 73
    • 81

    Mostly Sunny

    • 74
    • 82

    Mostly Sunny

Today 12 Sep Charleston

Mostly sunny with a chance of Showers and Thunderstorms. Highs in the upper 80s. South Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.

Tonight 12 Sep Charleston

Mostly cloudy in the Evening, then becoming partly cloudy. A slight chance of Showers and Thunderstorms. Lows in the mid 70s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cape Island Temperature Statistics

September Temperature

Georgetown County Airport (18 miles)

  • Lowest 9 September, 2026

    68 °F

  • Average September

    78.9 °F

  • Highest 5 September, 2026

    95 °F

Climate (2021–2026)

Georgetown County Airport (18 miles)

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  • Average Low 2021–2026

    54.7 °F

  • Average 2021–2026

    64.1 °F

  • Average High 2021–2026

    74.4 °F
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