Nantucket Harbor - First Point Weather Forecast

    • 63
    • 79

    Partly Sunny

    • 66
    • 76

    Sunny

    • 67
    • 75

    Mostly Sunny

    • 68
    • 77

    Chance Rain Showers

    • 68
    • 78

    Chance Rain Showers

    • 65
    • 77

    Partly Sunny

Today 24 Aug Nantucket

Mostly sunny. Humid with Highs in the upper 70s. Southwest Winds 10 to 15 Mph.

Tonight 24 Aug Nantucket

Partly cloudy. Patchy fog after midnight. Humid with Lows in the lower 60s. Southwest Winds 5 to 10 Mph.

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Nantucket Harbor - First Point Temperature Statistics

August Temperature

Nantucket, Nantucket Memorial Airport (2.5 miles)

  • Lowest 16 August, 2026

    57 °F

  • Average August

    71.4 °F

  • Highest 7 August, 2026

    80.1 °F

Climate (2021–2026)

Nantucket, Nantucket Memorial Airport (2.5 miles)

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  • Average Low 2021–2026

    46.8 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    58.9 °F
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