Bellport Bay - John Boyle Island Weather Forecast

    • 35
    • 52

    Becoming Sunny

    • 30
    • 52

    Chance Rain Showers

    • 42
    • 49

    Slight Chance Rain Showers

    • 44
    • 54

    Slight Chance Rain Showers

    • 47
    • 55

    Partly Sunny

    • 45
    • 54

    Chance Rain Showers

    • 45
    • 52

    Chance Rain Showers

Today 19 Apr Southwest Suffolk

Showers. Highs in the lower 50s. Northwest Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain near 100 percent.

Tonight 19 Apr Southwest Suffolk

Partly cloudy with a slight chance of rain Showers this Evening, then mostly clear after midnight. Lows in the upper 30s. West Winds 10 to 15 Mph. Gusts up to 30 Mph this evening. Chance of rain 20 percent.

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  • Temperature Real-Time

Bellport Bay - John Boyle Island Temperature Statistics

April Temperature

Shirley, Brookhaven Airport (5.6 miles)

  • Lowest 9 April, 2026

    24.1 °F

  • Average April

    50.6 °F

  • Highest 16 April, 2026

    81 °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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