Dartmouth Weather Forecast

    • 22
    • 48

    Mostly Sunny

    • 25
    • 35

    Partly Sunny

    • 30
    • 36

    Rain/Snow

    • 23
    • 39

    Partly Sunny

    • 30
    • 43

    Chance Rain

    • 29
    • 42

    Chance Rain

    • 28
    • 39

    Mostly Cloudy

Today 21 Dec Southern Bristol

Sunny. Highs in the mid 40s. Temperature falling into the upper 30s late. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 21 Dec Southern Bristol

Partly cloudy this Evening, then becoming mostly clear. Cooler with Lows in the lower 20s. Northwest Winds 10 to 15 Mph with Gusts up to 35 Mph.

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  • Temperature Real-Time

Dartmouth Temperature Statistics

December Temperature

New Bedford, New Bedford Regional Airport (4.3 miles)

  • Lowest 9 December, 2025

    10.9 °F

  • Average December

    32.4 °F

  • Highest 19 December, 2025

    57 °F

Climate (2020–Present)

New Bedford, New Bedford Regional Airport (4.3 miles)

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  • Average Low 2020–2025

    43.6 °F

  • Average 2020–2025

    53 °F

  • Average High 2020–2025

    62.2 °F
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