Harleyville Weather Forecast

    • 75
    • 92

    Partly Sunny

    • 75
    • 94

    Slight Chance Thunderstorms

    • 76
    • 97

    Slight Chance Thunderstorms

    • 77
    • 99

    Slight Chance Thunderstorms

    • 77
    • 99

    Slight Chance Thunderstorms

    • 75
    • 98

    Chance Thunderstorms

    • 74
    • 93

    Thunderstorms Likely

Today 16 Jul Dorchester

Mostly sunny with a chance of Showers and Thunderstorms. Highs in the lower 90s. South Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 16 Jul Dorchester

Partly cloudy. Lows in the mid 70s. South Winds 5 to 10 Mph.

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Harleyville Temperature Statistics

July Temperature

Summerville Airport (14.3 miles)

  • Lowest 11 July, 2025

    71.6 °F

  • Average July

    80.8 °F

  • Highest 7 July, 2025

    96.8 °F

Climate (2020–Present)

Summerville Airport (14.3 miles)

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  • Average Low 2020–2025

    56.5 °F

  • Average 2020–2025

    65.9 °F

  • Average High 2020–2025

    76.9 °F
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