Nantucket Harbor - Bass Point Weather Forecast

    • 64
    • 68

    Mostly Cloudy

    • 63
    • 66

    Partly Sunny

    • 65
    • 67

    Chance Rain Showers

    • 67
    • 70

    Chance Rain Showers

    • 60
    • 71

    Mostly Sunny

    • 58
    • 63

    Mostly Sunny

Today 15 Sep Nantucket

Mostly sunny. Near steady temperature in the upper 60s. Northeast Winds 10 to 15 Mph.

Tonight 15 Sep Nantucket

Partly cloudy in the Evening, then becoming mostly cloudy. Patchy fog after midnight. Lows in the mid 50s. Northeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

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Nantucket Harbor - Bass Point Temperature Statistics

September Temperature

Nantucket, Nantucket Memorial Airport (5 miles)

  • Lowest 13 September, 2025

    48 °F

  • Average September

    64.3 °F

  • Highest 6 September, 2025

    75.9 °F

Climate (2020–Present)

Nantucket, Nantucket Memorial Airport (5 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    53.6 °F

  • Average High 2020–2025

    59.4 °F
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