Bellport Bay - John Boyle Island Weather Forecast

    • 45
    • 50

    Chance Rain Showers

    • 48
    • 53

    Chance Rain Showers

    • 43
    • 55

    Rain Showers Likely

    • 42
    • 46

    Chance Rain

    • 47
    • 52

    Chance Rain

    • 44
    • 52

    Chance Rain

Today 30 Mar Southwest Suffolk

Mostly cloudy. A slight chance of Showers this afternoon. Highs in the upper 50s. Southwest Winds 15 to 20 Mph. Gusts up to 25 Mph, increasing to 35 Mph. Chance of rain 20 percent.

Tonight 30 Mar Southwest Suffolk

Mostly cloudy. A slight chance of Showers in the Evening, then a chance of Showers after midnight. Lows in the upper 40s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 50 percent.

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  • Temperature Real-Time

Bellport Bay - John Boyle Island Temperature Statistics

March Temperature

Shirley, Brookhaven Airport (5.6 miles)

  • Lowest 3 March, 2026

    14 °F

  • Average March

    40.5 °F

  • Highest 9 March, 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

    54.6 °F

  • Average High 2021–2026

    62.6 °F
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