Bellport Bay - John Boyle Island Weather Forecast

    • 66
    • 75

    Mostly Cloudy

    • 65
    • 77

    Mostly Cloudy

    • 67
    • 78

    Partly Sunny

    • 71
    • 77

    Chance Rain Showers

    • 72
    • 80

    Slight Chance Thunderstorms

    • 74
    • 85

    Mostly Sunny

Today 27 Jun Southwest Suffolk

Mostly cloudy. A chance of Showers, mainly this morning. Highs in the upper 70s. North Winds around 5 Mph, becoming south around 5 Mph this afternoon. Chance of rain 30 percent.

Tonight 27 Jun Southwest Suffolk

Mostly cloudy. Lows in the mid 60s. South Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Real-Time

Bellport Bay - John Boyle Island Temperature Statistics

June Temperature

Shirley, Brookhaven Airport (5.6 miles)

  • Lowest 2 June, 2026

    43 °F

  • Average June

    69.4 °F

  • Highest 11 June, 2026

    91 °F

Climate (2021–2026)

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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