Alder Island Weather Forecast

    • 68
    • 79

    Rain Showers Likely

    • 65
    • 78

    Chance Rain Showers

    • 67
    • 78

    Mostly Sunny

    • 71
    • 78

    Partly Sunny

    • 71
    • 78

    Chance Rain Showers

    • 71
    • 79

    Chance Rain Showers

Today 23 Aug Southern Nassau

Patchy fog this morning. Mostly cloudy with Showers likely with a chance of Thunderstorms this Morning, then mostly sunny with a chance of Showers and Thunderstorms this afternoon. Some Thunderstorms may produce gusty Winds, small Hail, and heavy rainfall. Highs in the lower 80s. Southeast Winds 5 to 10 Mph, becoming south with Gusts up to 20 Mph this afternoon. Chance of rain 70 percent.

Tonight 23 Aug Southern Nassau

Mostly clear. Lows in the mid 60s. Southwest Winds 5 to 10 Mph. Gusts up to 20 Mph in the evening.

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  • Temperature Real-Time

Alder Island Temperature Statistics

August Temperature

New York, Kennedy International Airport (9.9 miles)

  • Lowest 20 August, 2026

    64.9 °F

  • Average August

    78.6 °F

  • Highest 9 August, 2026

    92.6 °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

    56.3 °F

  • Average High 2021–2026

    63.6 °F
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