Alder Island Weather Forecast

    • 65
    • 76

    Increasing Clouds

    • 66
    • 72

    Rain Showers

    • 65
    • 78

    Chance Rain Showers

    • 66
    • 75

    Mostly Sunny

    • 66
    • 74

    Mostly Cloudy

    • 67
    • 76

    Slight Chance Thunderstorms

Today 21 Jun Southern Nassau

Sunny. A slight chance of Showers this afternoon. Highs in the lower 80s. West Winds around 5 Mph, becoming southwest 10 to 15 Mph this afternoon. Chance of rain 20 percent.

Tonight 21 Jun Southern Nassau

Partly cloudy. Lows in the mid 60s. South Winds 5 to 10 Mph, becoming northeast after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Alder Island Temperature Statistics

June Temperature

New York, Kennedy International Airport (9.9 miles)

  • Lowest 2 June, 2026

    50.6 °F

  • Average June

    72.8 °F

  • Highest 12 June, 2026

    96.7 °F

Climate (2021–2026)

New York, Kennedy International Airport (9.9 miles)

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  • Average Low 2021–2026

    49.3 °F

  • Average 2021–2026

    56.2 °F

  • Average High 2021–2026

    63.5 °F
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