Long Island Weather Forecast

    • 32
    • 44

    Decreasing Clouds

    • 42
    • 49

    Partly Sunny

    • 28
    • 56

    Rain

    • 33
    • 38

    Slight Chance Rain

    • 27
    • 44

    Partly Sunny

    • 24
    • 34

    Partly Sunny

Today 17 Dec Suffolk

Mostly sunny. Not as cool with Highs in the mid 40s. Southwest Winds 15 to 20 Mph with Gusts up to 35 Mph.

Tonight 17 Dec Suffolk

Mostly clear. Lows around 30. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

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Long Island Temperature Statistics

December Temperature

Boston, Logan International Airport (3.1 miles)

  • Lowest 5 December, 2025

    12 °F

  • Average December

    31.6 °F

  • Highest 10 December, 2025

    48 °F

Climate (2020–Present)

Boston, Logan International Airport (3.1 miles)

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  • Average Low 2020–2025

    46.9 °F

  • Average 2020–2025

    53.7 °F

  • Average High 2020–2025

    61 °F
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