Charleston Harbor - Fort Sumter Weather Forecast

    • 54
    • 58

    Increasing Clouds

    • 53
    • 62

    Mostly Cloudy

    • 51
    • 60

    Partly Sunny

    • 51
    • 61

    Partly Sunny

    • 53
    • 65

    Mostly Sunny

    • 54
    • 66

    Partly Sunny

Today 30 Jan Charleston

Sunny. Highs in the upper 60s, except in the lower 60s near the coast. East Winds 5 to 10 Mph.

Tonight 30 Jan Charleston

Mostly cloudy. Lows in the lower 50s. Southeast Winds around 5 Mph, becoming south after midnight.

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Charleston Harbor - Fort Sumter Temperature Statistics

January Temperature

Charleston Executive Airport (8.1 miles)

  • Lowest 24 January, 2025

    23 °F

  • Average January

    42.3 °F

  • Highest 6 January, 2025

    64.4 °F

Climate (2020–Present)

Charleston Executive Airport (8.1 miles)

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  • Average Low 2020–2025

    59.1 °F

  • Average 2020–2025

    67.3 °F

  • Average High 2020–2025

    76 °F
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