Alder Island Weather Forecast

    • 29
    • 36

    Increasing Clouds

    • 35
    • 46

    Partly Sunny

    • 49
    • 53

    Rain Showers

    • 30
    • 54

    Slight Chance Rain Showers

    • 38
    • 42

    Mostly Cloudy

    • 33
    • 46

    Mostly Cloudy

Today 16 Dec Southern Nassau

Mostly cloudy Early, then clearing. Highs in the lower 30s. West Winds 5 to 10 Mph. Gusts up to 20 Mph early.

Tonight 16 Dec Southern Nassau

Partly cloudy in the Evening, then clearing. Lows in the mid 20s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Alder Island Temperature Statistics

December Temperature

New York, Kennedy International Airport (9.9 miles)

  • Lowest 9 December, 2025

    19 °F

  • Average December

    33.8 °F

  • Highest 2 December, 2025

    45 °F

Climate (2020–Present)

New York, Kennedy International Airport (9.9 miles)

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  • Average Low 2020–2025

    49.5 °F

  • Average 2020–2025

    56.3 °F

  • Average High 2020–2025

    63.6 °F
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