Cooper River - Back River Entrance Weather Forecast

    • 70
    • 87

    Rain Showers Likely

    • 67
    • 86

    Chance Thunderstorms

    • 61
    • 79

    Chance Thunderstorms

    • 59
    • 79

    Mostly Sunny

    • 60
    • 81

    Mostly Sunny

    • 62
    • 82

    Partly Sunny

Today 22 Sep Tidal Berkeley

Partly sunny with a chance of Showers. A slight chance of Thunderstorms in the Morning, then a chance of Thunderstorms in the afternoon. Highs in the upper 80s. Northeast Winds around 5 Mph. Chance of rain 50 percent.

Tonight 22 Sep Tidal Berkeley

Partly cloudy. A chance of Showers and Thunderstorms, mainly in the evening. Lows around 70. Northeast Winds around 5 Mph. Chance of rain 40 percent.

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Cooper River - Back River Entrance Temperature Statistics

September Temperature

Charleston, Charleston Air Force Base (8.1 miles)

  • Lowest 17 September, 2026

    64.7 °F

  • Average September

    82.2 °F

  • Highest 5 September, 2026

    95.6 °F

Climate (2021–2026)

Charleston, Charleston Air Force Base (8.1 miles)

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  • Average Low 2021–2026

    58.3 °F

  • Average 2021–2026

    67.8 °F

  • Average High 2021–2026

    78.2 °F
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