Charleston Weather Forecast

    • 70
    • 83

    Thunderstorms Likely

    • 65
    • 81

    Rain Showers Likely

    • 64
    • 78

    Partly Sunny

    • 66
    • 81

    Mostly Sunny

    • 71
    • 85

    Mostly Sunny

    • 72
    • 88

    Slight Chance Thunderstorms

Today 18 May Charleston

Mostly cloudy. A chance of Showers and Thunderstorms in the Morning, then Showers and Thunderstorms likely in the afternoon. Highs in the mid 80s. Southwest Winds 5 to 10 Mph. Chance of rain 70 percent.

Tonight 18 May Charleston

Cloudy. Lows in the lower 70s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Charleston Temperature Statistics

May Temperature

Charleston Executive Airport (6.8 miles)

  • Lowest 11 May, 2024

    59 °F

  • Average May

    74.8 °F

  • Highest 7 May, 2024

    87.8 °F

Climate (2019–Present)

Charleston Executive Airport (6.8 miles)

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  • Average Low 2019–2024

    59.4 °F

  • Average 2019–2024

    67.7 °F

  • Average High 2019–2024

    76.3 °F
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