Nantucket Harbor - Nantucket Weather Forecast

    • 58
    • 77

    Increasing Clouds

    • 63
    • 75

    Mostly Sunny

    • 63
    • 75

    Mostly Cloudy

    • 64
    • 76

    Mostly Cloudy

    • 67
    • 76

    Chance Rain Showers

    • 67
    • 77

    Slight Chance Rain Showers

Today 24 Jul Nantucket

Sunny. Highs in the mid 70s. Northeast Winds around 5 Mph, becoming east this afternoon.

Tonight 24 Jul Nantucket

Partly cloudy. Lows in the upper 50s. East Winds 5 to 10 Mph.

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Nantucket Harbor - Nantucket Temperature Statistics

July Temperature

Nantucket, Nantucket Memorial Airport (2.5 miles)

  • Lowest 12 July, 2026

    55.9 °F

  • Average July

    69.9 °F

  • Highest 3 July, 2026

    87.1 °F

Climate (2021–2026)

Nantucket, Nantucket Memorial Airport (2.5 miles)

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  • Average Low 2021–2026

    46.9 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    59 °F
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