Madaket Harbor Weather Forecast

    • 51
    • 71

    Chance Rain Showers

    • 63
    • 73

    Partly Sunny

    • 63
    • 75

    Chance Rain Showers

    • 63
    • 73

    Slight Chance Rain Showers

    • 64
    • 74

    Mostly Sunny

    • 66
    • 76

    Partly Sunny

Today 18 Aug Nantucket

Partly sunny with a chance of Showers in the Morning, then sunny in the afternoon. Breezy and less humid. Near steady temperature in the upper 60s. Northeast Winds 15 to 25 Mph with Gusts up to 35 Mph. Chance of rain 30 percent.

Tonight 18 Aug Nantucket

Mostly clear in the Evening, then becoming partly cloudy. Cooler with Lows in the lower 50s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Madaket Harbor Temperature Statistics

August Temperature

Nantucket, Nantucket Memorial Airport (7.5 miles)

  • Lowest 3 August, 2025

    51.7 °F

  • Average August

    68.1 °F

  • Highest 12 August, 2025

    82.7 °F

Climate (2020–Present)

Nantucket, Nantucket Memorial Airport (7.5 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    53.6 °F

  • Average High 2020–2025

    59.4 °F
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