Bellport Bay - John Boyle Island Weather Forecast

    • 34
    • 43

    Chance Snow

    • 24
    • 38

    Snow Likely

    • 16
    • 34

    Breezy

    • 17
    • 22

    Partly Sunny

    • 29
    • 35

    Mostly Cloudy

    • 25
    • 38

    Chance Snow

Today 17 Jan Southwest Suffolk

Mostly cloudy. A chance of rain and snow in the Morning, then rain likely with a slight chance of snow in the afternoon. Highs in the lower 40s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of precipitation 70 percent.

Tonight 17 Jan Southwest Suffolk

Mostly cloudy. A chance of snow and rain after midnight. Lows in the lower 30s. West Winds 5 to 10 Mph. Gusts up to 20 Mph in the evening. Chance of precipitation 30 percent.

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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

    34.8 °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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