Dartmouth Weather Forecast

    • 50
    • 76

    Chance Rain Showers

    • 50
    • 69

    Mostly Sunny

    • 58
    • 73

    Mostly Sunny

    • 60
    • 76

    Slight Chance Rain Showers

    • 56
    • 76

    Partly Sunny

    • 56
    • 71

    Chance Rain Showers

Today 14 Sep Southern Bristol

Partly sunny with a slight chance of Showers and Thunderstorms in the Morning, then sunny in the afternoon. Highs in the lower 70s. Northwest Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

Tonight 14 Sep Southern Bristol

Clear. Much cooler. Less humid with Lows in the upper 40s. North Winds 5 to 10 Mph. Gusts up to 20 Mph in the evening.

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Dartmouth Temperature Statistics

September Temperature

New Bedford, New Bedford Regional Airport (4.3 miles)

  • Lowest 7 September, 2026

    48 °F

  • Average September

    67.6 °F

  • Highest 10 September, 2026

    84 °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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