Siasconset Weather Forecast

    • 39
    • 53

    Becoming Sunny

    • 43
    • 54

    Sunny

    • 53
    • 57

    Chance Rain Showers

    • 51
    • 58

    Breezy

    • 52
    • 57

    Chance Rain Showers

    • 51
    • 58

    Chance Rain Showers

    • 51
    • 58

    Slight Chance Rain Showers

Today 17 Oct Nantucket

Cloudy, cooler with Highs in the mid 50s. North Winds 15 to 20 Mph with Gusts up to 35 Mph.

Tonight 17 Oct Nantucket

Partly cloudy in the Evening, then clearing. Breezy and much cooler with Lows in the upper 30s. North Winds 15 to 25 Mph with Gusts up to 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Siasconset Temperature Statistics

October Temperature

Nantucket, Nantucket Memorial Airport (4.3 miles)

  • Lowest 15 October, 2026

    43 °F

  • Average October

    59.9 °F

  • Highest 2 October, 2026

    71.1 °F

Climate (2021–2026)

Nantucket, Nantucket Memorial Airport (4.3 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    58.7 °F
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