Cuttyhunk Harbor SPB Weather Forecast

    • 56
    • 76

    Mostly Sunny

    • 57
    • 71

    Mostly Sunny

    • 69
    • 73

    Partly Sunny

    • 71
    • 75

    Partly Sunny

    • 70
    • 79

    Chance Thunderstorms

    • 69
    • 77

    Slight Chance Thunderstorms

Today 21 Jul Dukes

Sunny. Highs in the upper 70s. North Winds 10 to 15 Mph.

Tonight 21 Jul Dukes

Partly cloudy. Patchy fog. Near steady temperature around 70. Northwest Winds 10 to 15 Mph.

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Cuttyhunk Harbor SPB Temperature Statistics

July Temperature

Marthas Vineyard Airport (16.2 miles)

  • Lowest 5 July, 2025

    47.6 °F

  • Average July

    72.1 °F

  • Highest 8 July, 2025

    85.6 °F

Climate (2020–Present)

Marthas Vineyard Airport (16.2 miles)

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  • Average Low 2020–2025

    44.8 °F

  • Average 2020–2025

    53.3 °F

  • Average High 2020–2025

    61.1 °F
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