Bellport Bay - John Boyle Island Weather Forecast

    • 47
    • 57

    Gradual Clearing

    • 50
    • 58

    Mostly Sunny

    • 52
    • 58

    Rain Showers

    • 52
    • 59

    Chance Rain Showers

    • 54
    • 60

    Slight Chance Rain Showers

    • 56
    • 63

    Partly Sunny

    • 54
    • 67

    Partly Sunny

Today 11 May Southwest Suffolk

Cloudy. Near steady temperature in the upper 50s. Northwest Winds 5 to 10 Mph.

Tonight 11 May Southwest Suffolk

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the upper 40s. West Winds around 5 Mph, becoming northwest after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Bellport Bay - John Boyle Island Temperature Statistics

May Temperature

Shirley, Brookhaven Airport (5.6 miles)

  • Lowest 1 May, 2026

    39.9 °F

  • Average May

    53.8 °F

  • Highest 7 May, 2026

    63 °F

Climate (2021–Present)

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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