Nantucket Weather Forecast

    • 67
    • 80

    Slight Chance Rain Showers

    • 69
    • 79

    Mostly Cloudy

    • 70
    • 80

    Mostly Cloudy

    • 70
    • 80

    Partly Sunny

    • 70
    • 78

    Partly Sunny

    • 70
    • 79

    Mostly Sunny

    • 69
    • 78

    Partly Sunny

Today 4 Aug Nantucket

Partly sunny. Near steady temperature in the mid 70s. Southwest Winds 5 to 10 Mph.

Tonight 4 Aug Nantucket

Mostly cloudy. A slight chance of Showers after midnight. Lows in the upper 60s. South Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Nantucket Temperature Statistics

August Temperature

Nantucket, Nantucket Memorial Airport (2.5 miles)

  • Lowest 1 August, 2026

    66.9 °F

  • Average August

    70.5 °F

  • Highest 2 August, 2026

    75.9 °F

Climate (2021–2026)

Nantucket, Nantucket Memorial Airport (2.5 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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