Siasconset Weather Forecast

    • 71
    • 80

    Mostly Cloudy

    • 71
    • 80

    Mostly Sunny

    • 70
    • 80

    Mostly Sunny

    • 69
    • 80

    Chance Rain Showers

    • 68
    • 78

    Chance Rain Showers

    • 67
    • 78

    Slight Chance Rain Showers

Today 8 Aug Nantucket

Partly sunny. Humid with Highs around 80. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 8 Aug Nantucket

Mostly cloudy. Humid with Lows in the lower 70s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Siasconset Temperature Statistics

August Temperature

Nantucket, Nantucket Memorial Airport (4.3 miles)

  • Lowest 5 August, 2026

    62.1 °F

  • Average August

    70.9 °F

  • Highest 4 August, 2026

    78.1 °F

Climate (2021–2026)

Nantucket, Nantucket Memorial Airport (4.3 miles)

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  • Average Low 2021–2026

    46.9 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    58.9 °F
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