Bellport Bay - John Boyle Island Weather Forecast

    • 36
    • 50

    Rain

    • 34
    • 42

    Partly Sunny

    • 33
    • 47

    Rain

    • 36
    • 40

    Partly Sunny

    • 23
    • 42

    Breezy

    • 31
    • 38

    Chance Rain/Snow

    • 34
    • 44

    Chance Rain

Today 30 Nov Southwest Suffolk

Rain. Near steady temperature in the upper 40s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 90 percent.

Tonight 30 Nov Southwest Suffolk

Mostly cloudy with a chance of rain in the Evening, then partly cloudy after midnight. Breezy with Lows in the mid 30s. West Winds 15 to 25 Mph. Chance of rain 50 percent.

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Bellport Bay - John Boyle Island Temperature Statistics

November Temperature

Shirley, Brookhaven Airport (5.6 miles)

  • Lowest 21 November, 2025

    25 °F

  • Average November

    45.2 °F

  • Highest 8 November, 2025

    64 °F

Climate (2020–Present)

Shirley, Brookhaven Airport (5.6 miles)

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  • Average Low 2020–2025

    46.5 °F

  • Average 2020–2025

    54.9 °F

  • Average High 2020–2025

    62.9 °F
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