Charleston Harbor - Fort Johnson Weather Forecast

    • 79
    • 86

    Mostly Sunny

    • 79
    • 87

    Chance Thunderstorms

    • 79
    • 88

    Chance Thunderstorms

    • 80
    • 86

    Chance Thunderstorms

    • 79
    • 86

    Thunderstorms Likely

    • 79
    • 85

    Thunderstorms Likely

Today 27 Jun Charleston

Mostly sunny with a slight chance of Showers and Thunderstorms. Highs in the upper 80s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 27 Jun Charleston

Mostly clear. Lows in the mid 70s. South Winds 5 to 10 Mph.

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Charleston Harbor - Fort Johnson Temperature Statistics

June Temperature

Charleston Executive Airport (6.8 miles)

  • Lowest 2 June, 2025

    64.4 °F

  • Average June

    80.8 °F

  • Highest 24 June, 2025

    96.8 °F

Climate (2020–Present)

Charleston Executive Airport (6.8 miles)

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  • Average Low 2020–2025

    59.1 °F

  • Average 2020–2025

    67.4 °F

  • Average High 2020–2025

    76.1 °F
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