Ashley River - Duck Island Weather Forecast

    • 76
    • 88

    Slight Chance Thunderstorms

    • 76
    • 91

    Chance Thunderstorms

    • 75
    • 94

    Mostly Sunny

    • 70
    • 86

    Mostly Sunny

    • 70
    • 85

    Mostly Sunny

    • 71
    • 86

    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 Real-Time

Ashley River - Duck Island Temperature Statistics

September Temperature

Charleston, Charleston Air Force Base (6.2 miles)

  • Lowest 8 September, 2026

    70.6 °F

  • Average September

    82.8 °F

  • Highest 5 September, 2026

    95.6 °F

Climate (2021–2026)

Charleston, Charleston Air Force Base (6.2 miles)

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  • Average Low 2021–2026

    58.3 °F

  • Average 2021–2026

    67.7 °F

  • Average High 2021–2026

    78.1 °F
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