Joseph Sylvia State Beach Weather Forecast

    • 31
    • 38

    Mostly Cloudy

    • 34
    • 45

    Slight Chance Rain

    • 28
    • 42

    Slight Chance Snow

    • 23
    • 35

    Partly Sunny

    • 35
    • 42

    Slight Chance Rain

    • 40
    • 49

    Chance Rain

    • 33
    • 47

    Chance Rain

Today 5 Dec Dukes

Partly sunny. Near steady temperature in the upper 20s. South Winds 5 to 10 Mph.

Tonight 5 Dec Dukes

Cloudy and not as cool. Near steady temperature in the mid 30s. Southeast Winds around 5 Mph.

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Joseph Sylvia State Beach Temperature Statistics

December Temperature

Marthas Vineyard Airport (3.7 miles)

  • Lowest 3 December, 2025

    30 °F

  • Average December

    41.4 °F

  • Highest 2 December, 2025

    50 °F

Climate (2020–Present)

Marthas Vineyard Airport (3.7 miles)

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  • Average Low 2020–2025

    44.6 °F

  • Average 2020–2025

    53.1 °F

  • Average High 2020–2025

    60.9 °F
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