Summerville Weather Forecast

    • 72
    • 94

    Rain Showers

    • 72
    • 88

    Rain Showers Likely

    • 70
    • 92

    Slight Chance Thunderstorms

    • 73
    • 93

    Slight Chance Thunderstorms

    • 75
    • 94

    Chance Thunderstorms

    • 73
    • 94

    Chance Thunderstorms

Today 18 Jun Dorchester

Mostly sunny. Showers and Thunderstorms likely in the afternoon. Highs in the lower 90s. Southwest Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

Tonight 18 Jun Dorchester

Mostly cloudy. A chance of Showers and Thunderstorms in the Evening, then Showers likely with a slight chance of Thunderstorms after midnight. Lows in the lower 70s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 70 percent.

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Summerville Temperature Statistics

June Temperature

Summerville Airport (6.2 miles)

  • Lowest 3 June, 2026

    51.8 °F

  • Average June

    76.5 °F

  • Highest 13 June, 2026

    98.6 °F

Climate (2021–2026)

Summerville Airport (6.2 miles)

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  • Average Low 2021–2026

    56 °F

  • Average 2021–2026

    65.7 °F

  • Average High 2021–2026

    76.8 °F
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