Charleston Harbor - Fort Sumter Weather Forecast

    • 46
    • 69

    Rain Showers

    • 54
    • 62

    Mostly Sunny

    • 60
    • 66

    Mostly Sunny

    • 64
    • 68

    Rain Showers Likely

    • 41
    • 69

    Rain Showers Likely

    • 41
    • 50

    Partly Sunny

    • 46
    • 53

    Partly Sunny

Today 12 Mar Charleston

Showers with a slight chance of Thunderstorms. Highs in the mid 70s. Temperature falling to around 60 late. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 90 percent.

Tonight 12 Mar Charleston

Mostly clear. Much cooler with Lows in the lower 40s. North Winds 15 to 20 Mph, becoming northeast 5 to 10 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Charleston Harbor - Fort Sumter Temperature Statistics

March Temperature

Charleston Executive Airport (8.1 miles)

  • Lowest 2 March, 2026

    44.6 °F

  • Average March

    63.8 °F

  • Highest 10 March, 2026

    86 °F

Climate (2021–Present)

Charleston Executive Airport (8.1 miles)

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  • Average Low 2021–2026

    58.8 °F

  • Average 2021–2026

    67.2 °F

  • Average High 2021–2026

    76 °F
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