Tuckernuck Island Weather Forecast

    • 69
    • 78

    Increasing Clouds

    • 70
    • 74

    Rain Showers Likely

    • 71
    • 76

    Rain Showers

    • 72
    • 77

    Chance Rain Showers

    • 69
    • 77

    Mostly Sunny

    • 70
    • 75

    Mostly Sunny

Today 20 Aug Nantucket

Mostly sunny. Patchy fog this morning. Highs in the upper 70s. Southwest Winds 5 to 10 Mph.

Tonight 20 Aug Nantucket

Mostly cloudy. A slight chance of Showers in the Evening, then a chance of Showers after midnight. Patchy fog. Humid with Lows in the upper 60s. West Winds 5 to 10 Mph, becoming north after midnight. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Tuckernuck Island Temperature Statistics

August Temperature

Nantucket, Nantucket Memorial Airport (10.6 miles)

  • Lowest 16 August, 2026

    57 °F

  • Average August

    71.6 °F

  • Highest 7 August, 2026

    80.1 °F

Climate (2021–2026)

Nantucket, Nantucket Memorial Airport (10.6 miles)

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  • Average Low 2021–2026

    46.9 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    58.9 °F
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