Sound Beach Weather Forecast

    • 59
    • 68

    Rain Showers

    • 59
    • 71

    Partly Sunny

    • 58
    • 71

    Chance Rain Showers

    • 58
    • 71

    Slight Chance Rain Showers

    • 56
    • 78

    Mostly Sunny

    • 53
    • 71

    Mostly Sunny

Today 7 Sep Northwest Suffolk

Rain. Highs around 70. North Winds 5 to 10 Mph. Chance of rain 90 percent.

Tonight 7 Sep Northwest Suffolk

Mostly cloudy with a slight chance of rain in the Evening, then partly cloudy after midnight. Lows in the mid 50s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent.

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Sound Beach Temperature Statistics

September Temperature

Shirley, Brookhaven Airport (10.6 miles)

  • Lowest 3 September, 2025

    50 °F

  • Average September

    63.9 °F

  • Highest 4 September, 2025

    75 °F

Climate (2020–Present)

Shirley, Brookhaven Airport (10.6 miles)

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  • Average Low 2020–2025

    46.6 °F

  • Average 2020–2025

    54.9 °F

  • Average High 2020–2025

    63 °F
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