Bellport Bay - John Boyle Island Weather Forecast

    • 30
    • 44

    Chance Rain

    • 19
    • 37

    Partly Sunny

    • 32
    • 36

    Partly Sunny

    • 29
    • 41

    Mostly Cloudy

    • 24
    • 33

    Slight Chance Snow

    • 21
    • 32

    Partly Sunny

Today 14 Jan Southwest Suffolk

Mostly cloudy. A slight chance of rain in the morning. Highs in the mid 40s. Southwest Winds 10 to 15 Mph. Chance of rain 20 percent.

Tonight 14 Jan Southwest Suffolk

Cloudy. A slight chance of rain in the Evening, then a chance of rain after midnight. Lows in the upper 20s. Southwest Winds 10 to 15 Mph. Chance of rain 50 percent.

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Bellport Bay - John Boyle Island Temperature Statistics

January Temperature

Shirley, Brookhaven Airport (5.6 miles)

  • Lowest 5 January, 2026

    14 °F

  • Average January

    33.5 °F

  • Highest 10 January, 2026

    50 °F

Climate (2021–Present)

Shirley, Brookhaven Airport (5.6 miles)

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  • Average Low 2021–2026

    46.4 °F

  • Average 2021–2026

    54.7 °F

  • Average High 2021–2026

    62.8 °F
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