Nantucket Harbor - Brant Point Lighthouse Weather Forecast

    • 37
    • 49

    Patchy Fog

    • 38
    • 50

    Patchy Fog

    • 41
    • 49

    Chance Rain

    • 30
    • 49

    Chance Rain

    • 35
    • 41

    Chance Rain

    • 32
    • 42

    Partly Sunny

    • 38
    • 46

    Rain Likely

Today 9 Mar Nantucket

Partly sunny. Patchy fog. Near steady temperature in the mid 40s. South Winds 5 to 10 Mph.

Tonight 9 Mar Nantucket

Mostly cloudy. Patchy fog. Lows in the upper 30s. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Nantucket Harbor - Brant Point Lighthouse Temperature Statistics

March Temperature

Nantucket, Nantucket Memorial Airport (2.5 miles)

  • Lowest 3 March, 2026

    14 °F

  • Average March

    35.1 °F

  • Highest 4 March, 2026

    46.9 °F

Climate (2021–Present)

Nantucket, Nantucket Memorial Airport (2.5 miles)

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  • Average Low 2021–2026

    47.1 °F

  • Average 2021–2026

    53.2 °F

  • Average High 2021–2026

    59.1 °F
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