Dorchester Weather Forecast

    • 73
    • 96

    Mostly Sunny

    • 65
    • 88

    Partly Sunny

    • 64
    • 86

    Mostly Sunny

    • 67
    • 88

    Mostly Sunny

    • 69
    • 90

    Mostly Sunny

    • 71
    • 91

    Slight Chance Thunderstorms

Today 14 Sep Dorchester

Sunny. Highs in the mid 90s. Northwest Winds around 5 Mph, becoming northeast around 5 Mph this afternoon.

Tonight 14 Sep Dorchester

Mostly clear. Lows in the lower 70s. East Winds around 5 Mph.

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  • Temperature Real-Time

Dorchester Temperature Statistics

September Temperature

Summerville Airport (8.1 miles)

  • Lowest 8 September, 2026

    69.8 °F

  • Average September

    80.2 °F

  • Highest 2 September, 2026

    95 °F

Climate (2021–2026)

Summerville Airport (8.1 miles)

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  • Average Low 2021–2026

    56.1 °F

  • Average 2021–2026

    65.8 °F

  • Average High 2021–2026

    77.1 °F
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