Mattapoisett Weather Forecast

    • 50
    • 77

    Becoming Sunny

    • 63
    • 76

    Chance Rain Showers

    • 59
    • 73

    Rain Showers

    • 50
    • 77

    Mostly Sunny

    • 51
    • 70

    Mostly Sunny

    • 57
    • 78

    Slight Chance Rain Showers

Today 11 Sep Southern Plymouth

Mostly sunny. Highs in the upper 70s. Northwest Winds 5 to 10 Mph, becoming west this afternoon.

Tonight 11 Sep Southern Plymouth

Clear. Lows in the upper 40s. Southwest Winds 5 to 10 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mattapoisett Temperature Statistics

September Temperature

New Bedford, New Bedford Regional Airport (7.5 miles)

  • Lowest 7 September, 2026

    48 °F

  • Average September

    66.8 °F

  • Highest 4 September, 2026

    82.9 °F

Climate (2021–2026)

New Bedford, New Bedford Regional Airport (7.5 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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