Bellport Bay - John Boyle Island Weather Forecast

    • 51
    • 61

    Chance Thunderstorms

    • 52
    • 62

    Mostly Cloudy

    • 49
    • 64

    Chance Rain Showers

    • 47
    • 54

    Chance Rain Showers

    • 39
    • 53

    Rain Showers Likely

    • 37
    • 46

    Mostly Sunny

    • 44
    • 49

    Mostly Sunny

Today 15 Apr Southwest Suffolk

Partly sunny with a 20 percent chance of Showers. Highs in the mid 70s. South Winds 10 to 15 Mph.

Tonight 15 Apr Southwest Suffolk

Mostly cloudy. A chance of Showers and Thunderstorms in the Evening, then a slight chance of Showers after midnight. Lows in the mid 50s. Southwest Winds 10 to 15 Mph. Chance of rain 40 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

    46.6 °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

    54.5 °F

  • Average High 2021–2026

    62.5 °F
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