Bellport Bay - John Boyle Island Weather Forecast

    • 39
    • 47

    Increasing Clouds

    • 43
    • 47

    Mostly Cloudy

    • 45
    • 54

    Chance Rain

    • 42
    • 52

    Chance Rain

    • 46
    • 50

    Partly Sunny

    • 45
    • 54

    Partly Sunny

Today 19 Nov Southwest Suffolk

Rain likely early. Highs in the upper 40s. Northwest Winds around 5 Mph, becoming northeast. Chance of rain 70 percent.

Tonight 19 Nov Southwest Suffolk

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the mid 30s. North Winds 5 to 10 Mph.

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Bellport Bay - John Boyle Island Temperature Statistics

November Temperature

Shirley, Brookhaven Airport (5.6 miles)

  • Lowest 7 November, 2025

    28 °F

  • Average November

    47.3 °F

  • Highest 8 November, 2025

    64 °F

Climate (2020–Present)

Shirley, Brookhaven Airport (5.6 miles)

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  • Average Low 2020–2025

    46.6 °F

  • Average 2020–2025

    54.9 °F

  • Average High 2020–2025

    62.9 °F
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