Bellport Bay - John Boyle Island Weather Forecast

    • 41
    • 48

    Slight Chance Rain Showers

    • 32
    • 47

    Mostly Sunny

    • 37
    • 41

    Mostly Sunny

    • 42
    • 45

    Partly Sunny

    • 46
    • 52

    Partly Sunny

    • 45
    • 55

    Partly Sunny

Today 6 Apr Southwest Suffolk

Mostly sunny. Highs in the lower 50s. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 6 Apr Southwest Suffolk

Mostly cloudy with a 20 percent chance of Showers. Lows around 40. West Winds 5 to 10 Mph. Gusts up to 25 Mph in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Bellport Bay - John Boyle Island Temperature Statistics

April Temperature

Shirley, Brookhaven Airport (5.6 miles)

  • Lowest 2 April, 2026

    39 °F

  • Average April

    50.1 °F

  • Highest 4 April, 2026

    66 °F

Climate (2021–Present)

Shirley, Brookhaven Airport (5.6 miles)

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  • Average Low 2021–2026

    46.2 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    62.6 °F
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