Bellport Bay - John Boyle Island Weather Forecast

    • 34
    • 39

    Mostly Sunny

    • 41
    • 44

    Increasing Clouds

    • 33
    • 45

    Chance Rain

    • 21
    • 42

    Chance Rain

    • 28
    • 33

    Partly Sunny

    • 30
    • 40

    Chance Rain

    • 24
    • 36

    Chance Rain/Snow

Today 12 Jan Southwest Suffolk

Sunny. Highs around 40. West Winds 15 to 20 Mph.

Tonight 12 Jan Southwest Suffolk

Mostly clear. Lows in the lower 30s. West Winds 15 to 20 Mph.

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  • Temperature Real-Time

Bellport Bay - John Boyle Island Temperature Statistics

January Temperature

Shirley, Brookhaven Airport (5.6 miles)

  • Lowest 5 January, 2026

    14 °F

  • Average January

    32.7 °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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