Siasconset Weather Forecast

    • 34
    • 39

    Mostly Sunny

    • 38
    • 43

    Increasing Clouds

    • 37
    • 45

    Chance Rain

    • 25
    • 43

    Chance Snow

    • 28
    • 35

    Mostly Cloudy

    • 33
    • 40

    Chance Rain

    • 26
    • 39

    Chance Rain

Today 12 Jan Nantucket

Sunny, brisk. Near steady temperature in the upper 30s. West Winds 15 to 25 Mph.

Tonight 12 Jan Nantucket

Mostly clear. Near steady temperature in the upper 30s. West Winds 15 to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Siasconset Temperature Statistics

January Temperature

Nantucket, Nantucket Memorial Airport (4.3 miles)

  • Lowest 1 January, 2026

    19 °F

  • Average January

    33 °F

  • Highest 9 January, 2026

    48 °F

Climate (2021–Present)

Nantucket, Nantucket Memorial Airport (4.3 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    53.3 °F

  • Average High 2021–2026

    59.2 °F
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