Charleston Harbor - Fort Johnson Weather Forecast

    • 80
    • 84

    Slight Chance Thunderstorms

    • 77
    • 85

    Chance Thunderstorms

    • 73
    • 78

    Rain Showers Likely

    • 72
    • 78

    Rain Showers Likely

    • 72
    • 77

    Rain Showers Likely

    • 70
    • 77

    Rain Showers Likely

    • 69
    • 77

    Chance Rain Showers

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Charleston Harbor - Fort Johnson Temperature Statistics

May Temperature

Charleston Executive Airport (6.8 miles)

  • Lowest 2 May, 2026

    55.4 °F

  • Average May

    72.6 °F

  • Highest 11 May, 2026

    87.8 °F

Climate (2021–Present)

Charleston Executive Airport (6.8 miles)

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  • Average Low 2021–2026

    58.9 °F

  • Average 2021–2026

    67.2 °F

  • Average High 2021–2026

    76 °F
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