Joseph Sylvia State Beach Weather Forecast

    • 64
    • 72

    Increasing Clouds

    • 67
    • 77

    Mostly Sunny

    • 63
    • 77

    Rain Showers Likely

    • 59
    • 72

    Chance Rain Showers

    • 59
    • 72

    Partly Sunny

    • 60
    • 70

    Mostly Cloudy

Today 4 Sep Dukes

Sunny. Near steady temperature around 70. South Winds 5 to 10 Mph.

Tonight 4 Sep Dukes

Partly cloudy in the Evening, then becoming mostly cloudy. Patchy fog. Near steady temperature in the mid 60s. South Winds around 10 Mph with Gusts up to 20 Mph.

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  • Temperature Real-Time

Joseph Sylvia State Beach Temperature Statistics

September Temperature

Marthas Vineyard Airport (3.7 miles)

  • Lowest 2 September, 2025

    57.9 °F

  • Average September

    68.3 °F

  • Highest 2 September, 2025

    73 °F

Climate (2020–Present)

Marthas Vineyard Airport (3.7 miles)

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  • Average Low 2020–2025

    44.6 °F

  • Average 2020–2025

    53.2 °F

  • Average High 2020–2025

    61.1 °F
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