Bellport Bay - John Boyle Island Weather Forecast

    • 23
    • 30

    Gradual Clearing

    • 26
    • 31

    Mostly Cloudy

    • 23
    • 32

    Partly Sunny

    • 30
    • 35

    Mostly Cloudy

    • 37
    • 41

    Chance Rain

    • 34
    • 44

    Chance Rain

Today 2 Jan Southwest Suffolk

Mostly cloudy in the Morning, then becoming mostly sunny. Highs in the lower 30s. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 2 Jan Southwest Suffolk

Partly cloudy in the Evening, then clearing. Lows around 20. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Bellport Bay - John Boyle Island Temperature Statistics

January Temperature

Shirley, Brookhaven Airport (5.6 miles)

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  • Average January

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Climate (2021–Present)

Shirley, Brookhaven Airport (5.6 miles)

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  • Average Low 2021–2025

    46.4 °F

  • Average 2021–2025

    54.7 °F

  • Average High 2021–2025

    62.8 °F
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