Nantucket Harbor - Pocomo Head Weather Forecast

    • 38
    • 43

    Breezy

    • 28
    • 45

    Breezy

    • 33
    • 36

    Partly Sunny

    • 36
    • 43

    Rain

    • 35
    • 40

    Mostly Cloudy

    • 41
    • 46

    Chance Rain

Today 20 Dec Nantucket

Mostly sunny and cooler. Near steady temperature in the upper 30s. West Winds around 10 Mph.

Tonight 20 Dec Nantucket

Mostly cloudy and brisk. Lows in the mid 30s. Temperature rising into the lower 40s after midnight. Southwest Winds 15 to 25 Mph.

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Nantucket Harbor - Pocomo Head Temperature Statistics

December Temperature

Nantucket, Nantucket Memorial Airport (4.3 miles)

  • Lowest 15 December, 2025

    16 °F

  • Average December

    36.3 °F

  • Highest 2 December, 2025

    52 °F

Climate (2020–Present)

Nantucket, Nantucket Memorial Airport (4.3 miles)

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  • Average Low 2020–2025

    47.2 °F

  • Average 2020–2025

    53.4 °F

  • Average High 2020–2025

    59.2 °F
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