Oyster Bay Harbor Weather Forecast

    • 35
    • 40

    Increasing Clouds

    • 28
    • 44

    Partly Sunny

    • 32
    • 36

    Partly Sunny

    • 36
    • 42

    Chance Rain/Snow

    • 33
    • 43

    Partly Sunny

    • 42
    • 46

    Chance Rain

Today 20 Dec Northern Nassau

Mostly sunny. Cooler with Highs around 40. West Winds 10 to 15 Mph. Gusts up to 30 Mph in the morning.

Tonight 20 Dec Northern Nassau

Mostly cloudy. Lows in the mid 30s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Oyster Bay Harbor Temperature Statistics

December Temperature

Farmingdale - Republic Airport (11.2 miles)

  • Lowest 5 December, 2025

    19 °F

  • Average December

    32.5 °F

  • Highest 10 December, 2025

    46.9 °F

Climate (2020–Present)

Farmingdale - Republic Airport (11.2 miles)

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  • Average Low 2020–2025

    48.4 °F

  • Average 2020–2025

    55.9 °F

  • Average High 2020–2025

    63.3 °F
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