Charleston Harbor - Fort Sumter Weather Forecast

    • 57
    • 74

    Sunny

    • 58
    • 70

    Sunny

    • 59
    • 71

    Mostly Sunny

    • 59
    • 67

    Partly Sunny

    • 60
    • 68

    Chance Rain Showers

    • 58
    • 67

    Chance Rain Showers

    • 57
    • 65

    Mostly Cloudy

Today 22 Oct Charleston

Sunny. Highs in the mid 70s. West Winds 5 to 10 Mph.

Tonight 22 Oct Charleston

Clear. Lows in the mid 40s, except around 50 near the coast. Northwest Winds 5 to 10 Mph.

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Charleston Harbor - Fort Sumter Temperature Statistics

October Temperature

Charleston Executive Airport (8.1 miles)

  • Lowest 20 October, 2025

    51.8 °F

  • Average October

    69.2 °F

  • Highest 6 October, 2025

    84.2 °F

Climate (2020–Present)

Charleston Executive Airport (8.1 miles)

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  • Average Low 2020–2025

    59 °F

  • Average 2020–2025

    67.3 °F

  • Average High 2020–2025

    76.1 °F
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