Dartmouth Weather Forecast

    • 65
    • 75

    Rain Showers Likely

    • 64
    • 75

    Rain Showers Likely

    • 64
    • 75

    Chance Rain Showers

    • 62
    • 80

    Chance Rain Showers

    • 59
    • 77

    Slight Chance Rain Showers

    • 57
    • 74

    Partly Sunny

Today 31 Aug Southern Bristol

Mostly sunny. Highs in the mid 70s. North Winds around 5 Mph, becoming southeast in the afternoon.

Tonight 31 Aug Southern Bristol

Mostly cloudy. Showers likely after midnight. Lows in the mid 60s. South Winds 5 to 10 Mph. Chance of rain 70 percent.

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Dartmouth Temperature Statistics

August Temperature

New Bedford, New Bedford Regional Airport (4.3 miles)

  • Lowest 16 August, 2026

    54 °F

  • Average August

    72.6 °F

  • Highest 7 August, 2026

    91 °F

Climate (2021–2026)

New Bedford, New Bedford Regional Airport (4.3 miles)

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  • Average Low 2021–2026

    43.1 °F

  • Average 2021–2026

    52.7 °F

  • Average High 2021–2026

    61.9 °F
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