Roslyn Harbor Weather Forecast

    • 30
    • 45

    Rain

    • 25
    • 36

    Partly Sunny

    • 27
    • 37

    Mostly Cloudy

    • 29
    • 41

    Chance Snow

    • 20
    • 36

    Slight Chance Snow

    • 22
    • 31

    Partly Sunny

Today 10 Dec Northern Nassau

Mostly cloudy. A slight chance of rain in the Morning, then rain in the afternoon. Highs in the mid 40s. Southwest Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain 80 percent.

Tonight 10 Dec Northern Nassau

Mostly cloudy. A chance of rain in the evening. Breezy with Lows in the lower 30s. West Winds 15 to 25 Mph. Chance of rain 30 percent.

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Roslyn Harbor Temperature Statistics

December Temperature

Farmingdale - Republic Airport (12.4 miles)

  • Lowest 5 December, 2025

    19 °F

  • Average December

    35 °F

  • Highest 2 December, 2025

    45 °F

Climate (2020–Present)

Farmingdale - Republic Airport (12.4 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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