Bellport Bay - John Boyle Island Weather Forecast

    • 40
    • 46

    Increasing Clouds

    • 43
    • 52

    Mostly Cloudy

    • 42
    • 53

    Mostly Sunny

    • 44
    • 49

    Mostly Cloudy

    • 52
    • 56

    Mostly Cloudy

    • 53
    • 61

    Mostly Cloudy

Today 9 Apr Southwest Suffolk

Mostly sunny. Highs in the upper 40s. South Winds 10 to 15 Mph.

Tonight 9 Apr Southwest Suffolk

Mostly clear in the Evening, then becoming partly cloudy. Patchy fog after midnight. Lows in the upper 30s. South Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Bellport Bay - John Boyle Island Temperature Statistics

April Temperature

Shirley, Brookhaven Airport (5.6 miles)

  • Lowest 7 April, 2026

    33.1 °F

  • Average April

    48.3 °F

  • Highest 4 April, 2026

    66 °F

Climate (2021–Present)

Shirley, Brookhaven Airport (5.6 miles)

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  • Average Low 2021–2026

    46.2 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    62.6 °F
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