Dartmouth Weather Forecast

    • 51
    • 67

    Slight Chance Rain Showers

    • 48
    • 64

    Mostly Cloudy

    • 49
    • 65

    Mostly Cloudy

    • 49
    • 65

    Mostly Cloudy

    • 49
    • 65

    Chance Rain Showers

    • 50
    • 66

    Chance Rain Showers

Today 21 Sep Southern Bristol

Mostly cloudy with a chance of Showers in the Morning, then partly sunny in the afternoon. Patchy fog in the morning. Highs in the mid 60s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 40 percent.

Tonight 21 Sep Southern Bristol

Mostly cloudy. Lows in the lower 50s. Northeast Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Dartmouth Temperature Statistics

September Temperature

New Bedford, New Bedford Regional Airport (4.3 miles)

  • Lowest 15 September, 2026

    45 °F

  • Average September

    66.6 °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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