South Dartmouth Weather Forecast

    • 70
    • 77

    Slight Chance Thunderstorms

    • 67
    • 78

    Slight Chance Thunderstorms

    • 65
    • 77

    Partly Sunny

    • 69
    • 78

    Partly Sunny

    • 67
    • 77

    Mostly Cloudy

    • 67
    • 74

    Chance Rain Showers

Today 27 Aug Southern Bristol

Mostly sunny. Near steady temperature in the upper 70s. South Winds 10 to 15 Mph.

Tonight 27 Aug Southern Bristol

Mostly cloudy. Isolated Showers in the Evening, then isolated Showers and Thunderstorms after midnight. Patchy fog. Some Thunderstorms may produce gusty Winds, small Hail, and heavy rainfall after midnight. Humid with Lows in the upper 60s. South Winds 5 to 10 Mph. Gusts up to 20 Mph in the evening. Chance of rain 20 percent.

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South Dartmouth Temperature Statistics

August Temperature

New Bedford, New Bedford Regional Airport (5.6 miles)

  • Lowest 16 August, 2026

    54 °F

  • Average August

    72.8 °F

  • Highest 7 August, 2026

    91 °F

Climate (2021–2026)

New Bedford, New Bedford Regional Airport (5.6 miles)

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  • Average Low 2021–2026

    43.2 °F

  • Average 2021–2026

    52.7 °F

  • Average High 2021–2026

    61.9 °F
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