Nantucket Harbor - Third Point Weather Forecast

    • 66
    • 76

    Becoming Sunny

    • 62
    • 70

    Mostly Sunny

    • 62
    • 68

    Mostly Sunny

    • 64
    • 70

    Mostly Sunny

    • 64
    • 72

    Partly Sunny

    • 66
    • 71

    Slight Chance Rain Showers

Today 4 Sep Nantucket

Mostly sunny. Near steady temperature in the mid 70s. Northwest Winds 5 to 10 Mph.

Tonight 4 Sep Nantucket

Partly cloudy in the Evening, then clearing. Humid with Lows in the mid 60s. Southwest Winds around 5 Mph, becoming northwest 10 to 15 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Nantucket Harbor - Third Point Temperature Statistics

September Temperature

Nantucket, Nantucket Memorial Airport (3.7 miles)

  • Lowest 2 September, 2026

    57.9 °F

  • Average September

    64.5 °F

  • Highest 2 September, 2026

    72 °F

Climate (2021–2026)

Nantucket, Nantucket Memorial Airport (3.7 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    46.8 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    58.8 °F
Get WillyWeather+ to remove ads