Charleston Harbor - Fort Sumter Weather Forecast

    • 80
    • 85

    Becoming Sunny

    • 81
    • 88

    Slight Chance Thunderstorms

    • 78
    • 90

    Chance Thunderstorms

    • 78
    • 87

    Chance Thunderstorms

    • 78
    • 86

    Chance Thunderstorms

    • 77
    • 86

    Chance Thunderstorms

Today 11 Jun Charleston

Sunny. Highs in the lower 90s, except in the upper 80s near the coast. Southwest Winds 10 to 15 Mph.

Tonight 11 Jun Charleston

Mostly clear. Lows in the mid 70s. Southwest Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Charleston Harbor - Fort Sumter Temperature Statistics

June Temperature

Charleston Executive Airport (8.1 miles)

  • Lowest 4 June, 2026

    59 °F

  • Average June

    75 °F

  • Highest 7 June, 2026

    86 °F

Climate (2021–Present)

Charleston Executive Airport (8.1 miles)

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  • Average Low 2021–2026

    58.9 °F

  • Average 2021–2026

    67.2 °F

  • Average High 2021–2026

    76.1 °F
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