Alder Island Weather Forecast

    • 43
    • 53

    Decreasing Clouds

    • 42
    • 56

    Mostly Sunny

    • 46
    • 49

    Mostly Cloudy

    • 53
    • 60

    Mostly Cloudy

    • 52
    • 63

    Slight Chance Thunderstorms

    • 55
    • 63

    Mostly Cloudy

    • 53
    • 65

    Mostly Cloudy

Today 10 Apr Southern Nassau

Sunny. Near steady temperature in the mid 50s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 10 Apr Southern Nassau

Mostly cloudy. A slight chance of Showers after midnight. Lows in the mid 40s. South Winds 10 to 15 Mph, becoming southwest 5 to 10 Mph after midnight. Gusts up to 25 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Alder Island Temperature Statistics

April Temperature

New York, Kennedy International Airport (9.9 miles)

  • Lowest 8 April, 2026

    30 °F

  • Average April

    50 °F

  • Highest 1 April, 2026

    78.7 °F

Climate (2021–Present)

New York, Kennedy International Airport (9.9 miles)

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  • Average Low 2021–2026

    49.3 °F

  • Average 2021–2026

    56.1 °F

  • Average High 2021–2026

    63.5 °F
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