Nantucket Harbor Weather Forecast

    • 36
    • 43

    Mostly Cloudy

    • 38
    • 45

    Mostly Cloudy

    • 42
    • 48

    Mostly Cloudy

    • 44
    • 53

    Rain Likely

    • 37
    • 51

    Rain

    • 38
    • 46

    Mostly Sunny

Today 13 Mar Nantucket

Mostly sunny. Near steady temperature in the lower 40s. East Winds 15 to 20 Mph.

Tonight 13 Mar Nantucket

Mostly cloudy. A slight chance of rain Showers in the Evening, then a chance of rain Showers after midnight. Patchy fog after midnight. Near steady temperature in the upper 30s. East Winds 15 to 20 Mph, Diminishing to 5 to 10 Mph after midnight. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Nantucket Harbor Temperature Statistics

March Temperature

Nantucket, Nantucket Memorial Airport (2.5 miles)

  • Lowest 3 March, 2025

    19.9 °F

  • Average March

    37.8 °F

  • Highest 10 March, 2025

    51.1 °F

Climate (2020–Present)

Nantucket, Nantucket Memorial Airport (2.5 miles)

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  • Average Low 2020–2025

    47.6 °F

  • Average 2020–2025

    53.5 °F

  • Average High 2020–2025

    59.2 °F
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