Bellport Bay - John Boyle Island Weather Forecast

    • 39
    • 58

    Chance Rain Showers

    • 34
    • 44

    Breezy

    • 35
    • 43

    Breezy

    • 33
    • 41

    Partly Sunny

    • 38
    • 53

    Chance Rain

    • 32
    • 46

    Rain Likely

    • 32
    • 43

    Chance Rain

Today 26 Nov Southwest Suffolk

Cloudy with a 20 percent chance of Showers. Areas of fog. Near steady temperature in the upper 50s. Southwest Winds 10 to 15 Mph.

Tonight 26 Nov Southwest Suffolk

Patchy fog in the evening. Mostly cloudy with a chance of Showers in the Evening, then mostly clear after midnight. Breezy, cooler with Lows in the mid 30s. West Winds 15 to 25 Mph with Gusts up to 35 Mph. Chance of rain 40 percent.

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Bellport Bay - John Boyle Island Temperature Statistics

November Temperature

Shirley, Brookhaven Airport (5.6 miles)

  • Lowest 21 November, 2025

    25 °F

  • Average November

    45.1 °F

  • Highest 8 November, 2025

    64 °F

Climate (2020–Present)

Shirley, Brookhaven Airport (5.6 miles)

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  • Average Low 2020–2025

    46.5 °F

  • Average 2020–2025

    54.9 °F

  • Average High 2020–2025

    62.9 °F
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