Nantucket Harbor Weather Forecast

    • 63
    • 78

    Dense Fog

    • 66
    • 79

    Decreasing Clouds

    • 62
    • 79

    Chance Rain Showers

    • 60
    • 72

    Chance Rain Showers

    • 61
    • 69

    Chance Rain Showers

    • 62
    • 72

    Chance Rain Showers

    • 63
    • 73

    Slight Chance Rain Showers

Today 23 Jun Nantucket

Mostly sunny. Near steady temperature in the lower 70s. Northeast Winds 5 to 10 Mph.

Tonight 23 Jun Nantucket

Mostly cloudy. Patchy fog this Evening, then patchy dense fog after midnight with visibility one quarter mile or less at Times. Lows in the mid 60s. Southwest Winds 5 to 10 Mph. Gusts up to 20 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Nantucket Harbor Temperature Statistics

June Temperature

Nantucket, Nantucket Memorial Airport (2.5 miles)

  • Lowest 3 June, 2025

    50.6 °F

  • Average June

    61.7 °F

  • Highest 21 June, 2025

    75 °F

Climate (2020–Present)

Nantucket, Nantucket Memorial Airport (2.5 miles)

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  • Average Low 2020–2025

    47.7 °F

  • Average 2020–2025

    53.6 °F

  • Average High 2020–2025

    59.3 °F
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