Harleyville Weather Forecast

    • 61
    • 84

    Sunny

    • 63
    • 87

    Sunny

    • 67
    • 90

    Mostly Sunny

    • 69
    • 94

    Mostly Sunny

    • 70
    • 95

    Partly Sunny

    • 70
    • 93

    Slight Chance Thunderstorms

    • 70
    • 86

    Chance Thunderstorms

Today 2 Sep Dorchester

Sunny. Highs in the mid 80s. Northeast Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 2 Sep Dorchester

Mostly clear. Lows in the lower 60s. Northeast Winds around 5 Mph.

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Harleyville Temperature Statistics

September Temperature

Summerville Airport (14.3 miles)

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  • Average September

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Climate (2020–Present)

Summerville Airport (14.3 miles)

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  • Average Low 2020–2025

    56.5 °F

  • Average 2020–2025

    66 °F

  • Average High 2020–2025

    76.9 °F
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