Bellport Bay - John Boyle Island Weather Forecast

    • 15
    • 23

    Increasing Clouds

    • 14
    • 23

    Partly Sunny

    • 11
    • 21

    Partly Sunny

    • 12
    • 20

    Partly Sunny

    • 18
    • 25

    Chance Snow

    • 21
    • 28

    Chance Snow

Today 27 Jan Southwest Suffolk

Sunny in the Morning, then partly sunny with a chance of Flurries in the afternoon. Cold with Highs in the lower 20s. West Winds 15 to 20 Mph with Gusts up to 30 Mph. Wind chill Values as low as 2 below.

Tonight 27 Jan Southwest Suffolk

Partly cloudy in the Evening, then clearing. Lows around 12. West Winds 15 to 20 Mph with Gusts up to 30 Mph. Wind chill Values as low as 2 below.

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Bellport Bay - John Boyle Island Temperature Statistics

January Temperature

Shirley, Brookhaven Airport (5.6 miles)

  • Lowest 21 January, 2026

    8.1 °F

  • Average January

    32.6 °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

    62.7 °F
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