Joseph Sylvia State Beach Weather Forecast

    • 62
    • 65

    Rain

    • 55
    • 67

    Chance Rain

    • 55
    • 64

    Chance Rain Showers

    • 56
    • 64

    Breezy

    • 55
    • 64

    Chance Rain Showers

    • 55
    • 64

    Rain Showers Likely

Today 20 Sep Dukes

Cloudy. A slight chance of Rain, then rain likely. Patchy fog. Near steady temperature in the mid 60s. Southeast Winds 10 to 15 Mph. Chance of rain 70 percent.

Tonight 20 Sep Dukes

Rain with isolated Thunderstorms. Patchy fog. Not as cool. Near steady temperature in the mid 60s. Southeast Winds 5 to 10 Mph. Gusts up to 20 Mph in the evening. Chance of rain near 100 percent.

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Joseph Sylvia State Beach Temperature Statistics

September Temperature

Marthas Vineyard Airport (3.7 miles)

  • Lowest 7 September, 2026

    52 °F

  • Average September

    68 °F

  • Highest 4 September, 2026

    81 °F

Climate (2021–2026)

Marthas Vineyard Airport (3.7 miles)

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  • Average Low 2021–2026

    44.5 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    60.5 °F
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