Bellport Bay - John Boyle Island Weather Forecast

    • 48
    • 66

    Rain Showers

    • 46
    • 54

    Slight Chance Rain Showers

    • 40
    • 53

    Rain Showers

    • 36
    • 47

    Mostly Sunny

    • 43
    • 46

    Partly Sunny

    • 45
    • 55

    Partly Sunny

Today 17 Apr Southwest Suffolk

Partly sunny with scattered Showers and Thunderstorms. Highs in the mid 70s. North Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 17 Apr Southwest Suffolk

Mostly cloudy with scattered Showers in the Evening, then partly cloudy after midnight. Lows in the upper 40s. Northeast Winds 5 to 10 Mph. Chance of rain 40 percent.

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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 9 April, 2026

    24.1 °F

  • Average April

    48.1 °F

  • Highest 15 April, 2026

    80.1 °F

Climate (2021–Present)

Shirley, Brookhaven Airport (5.6 miles)

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  • Average Low 2021–2026

    46.2 °F

  • Average 2021–2026

    54.5 °F

  • Average High 2021–2026

    62.6 °F
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