Summerville Weather Forecast

    • 74
    • 93

    Slight Chance Thunderstorms

    • 74
    • 91

    Slight Chance Thunderstorms

    • 74
    • 89

    Rain Showers

    • 74
    • 88

    Rain Showers

    • 75
    • 89

    Chance Thunderstorms

    • 75
    • 90

    Chance Thunderstorms

Today 31 Jul Dorchester

Sunny. Highs in the mid 90s. Light and variable Winds, becoming east around 5 Mph in the afternoon.

Tonight 31 Jul Dorchester

Partly cloudy. Lows in the lower 70s. Southeast Winds around 5 Mph.

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Summerville Temperature Statistics

July Temperature

Summerville Airport (6.2 miles)

  • Lowest 2 July, 2026

    68 °F

  • Average July

    83.2 °F

  • Highest 9 July, 2026

    100.4 °F

Climate (2021–2026)

Summerville Airport (6.2 miles)

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  • Average Low 2021–2026

    56 °F

  • Average 2021–2026

    65.8 °F

  • Average High 2021–2026

    77 °F
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