Alder Island Weather Forecast

    • 71
    • 84

    Chance Rain Showers

    • 69
    • 85

    Slight Chance Thunderstorms

    • 67
    • 81

    Partly Sunny

    • 70
    • 79

    Partly Sunny

    • 72
    • 78

    Rain Showers Likely

    • 70
    • 81

    Slight Chance Rain Showers

Today 12 Aug Southern Nassau

Partly sunny. A slight chance of Showers this morning. Highs in the upper 80s. North Winds around 5 Mph, becoming west this afternoon. Chance of rain 20 percent.

Tonight 12 Aug Southern Nassau

Partly cloudy in the Evening, then mostly cloudy with a chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the lower 70s. Southwest Winds 5 to 10 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Alder Island Temperature Statistics

August Temperature

New York, Kennedy International Airport (9.9 miles)

  • Lowest 4 August, 2026

    66.7 °F

  • Average August

    79.5 °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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