Siasconset Weather Forecast

    • 39
    • 44

    Increasing Clouds

    • 43
    • 48

    Slight Chance Rain

    • 45
    • 50

    Slight Chance Rain

    • 39
    • 51

    Rain Likely

    • 38
    • 43

    Chance Rain

    • 39
    • 46

    Chance Rain

Today 29 Mar Nantucket

Sunny. Highs in the mid 40s. West Winds around 10 Mph, becoming southwest 15 to 20 Mph.

Tonight 29 Mar Nantucket

Mostly cloudy and not as cool. Near steady temperature in the lower 40s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Siasconset Temperature Statistics

March Temperature

Nantucket, Nantucket Memorial Airport (4.3 miles)

  • Lowest 3 March, 2026

    14 °F

  • Average March

    39.6 °F

  • Highest 11 March, 2026

    55 °F

Climate (2021–Present)

Nantucket, Nantucket Memorial Airport (4.3 miles)

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  • Average Low 2021–2026

    47 °F

  • Average 2021–2026

    53.2 °F

  • Average High 2021–2026

    59.1 °F
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