Bellport Bay - John Boyle Island Weather Forecast

    • 51
    • 63

    Partly Sunny

    • 52
    • 64

    Chance Rain Showers

    • 52
    • 64

    Mostly Cloudy

    • 48
    • 62

    Chance Rain Showers

    • 47
    • 54

    Mostly Cloudy

    • 44
    • 55

    Chance Rain Showers

Today 14 Apr Southwest Suffolk

Mostly sunny. Highs in the mid 70s. Southwest Winds around 5 Mph, becoming south 10 to 15 Mph this afternoon.

Tonight 14 Apr Southwest Suffolk

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the mid 50s. Southwest Winds 10 to 15 Mph.

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Bellport Bay - John Boyle Island Temperature Statistics

April Temperature

Shirley, Brookhaven Airport (5.6 miles)

  • Lowest 9 April, 2026

    24.1 °F

  • Average April

    46 °F

  • Highest 4 April, 2026

    66 °F

Climate (2021–Present)

Shirley, Brookhaven Airport (5.6 miles)

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  • Average Low 2021–2026

    46.1 °F

  • Average 2021–2026

    54.5 °F

  • Average High 2021–2026

    62.5 °F
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