Dartmouth Weather Forecast

    • 58
    • 77

    Decreasing Clouds

    • 49
    • 79

    Mostly Sunny

    • 49
    • 69

    Mostly Sunny

    • 51
    • 70

    Partly Sunny

    • 58
    • 73

    Partly Sunny

    • 61
    • 78

    Partly Sunny

    • 57
    • 77

    Partly Sunny

Today 18 Sep Southern Bristol

Partly sunny. Near steady temperature in the lower 70s. West Winds around 5 Mph.

Tonight 18 Sep Southern Bristol

Mostly clear. Lows in the upper 50s. Southwest Winds 5 to 10 Mph, becoming west after midnight.

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Dartmouth Temperature Statistics

September Temperature

New Bedford, New Bedford Regional Airport (4.3 miles)

  • Lowest 13 September, 2025

    43 °F

  • Average September

    63.1 °F

  • Highest 6 September, 2025

    79 °F

Climate (2020–Present)

New Bedford, New Bedford Regional Airport (4.3 miles)

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  • Average Low 2020–2025

    43.7 °F

  • Average 2020–2025

    53.2 °F

  • Average High 2020–2025

    62.4 °F
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