Mount Pleasant Weather Forecast

    • 64
    • 83

    Mostly Sunny

    • 70
    • 83

    Partly Sunny

    • 70
    • 86

    Mostly Sunny

    • 69
    • 85

    Mostly Sunny

    • 70
    • 84

    Partly Sunny

    • 70
    • 81

    Chance Thunderstorms

    • 70
    • 82

    Chance Thunderstorms

Today 16 Sep Charleston

Sunny. Highs in the lower 80s. North Winds around 5 Mph.

Tonight 16 Sep Charleston

Mostly clear. Lows in the mid 60s. North Winds around 5 Mph.

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Mount Pleasant Temperature Statistics

September Temperature

Mount Pleasant Regional-Faison Field (8.1 miles)

  • Lowest 1 September, 2025

    62.6 °F

  • Average September

    73.2 °F

  • Highest 7 September, 2025

    89.6 °F

Climate (2020–Present)

Mount Pleasant Regional-Faison Field (8.1 miles)

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  • Average Low 2020–2025

    58.5 °F

  • Average 2020–2025

    66.5 °F

  • Average High 2020–2025

    75.4 °F
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