Bellport Bay - John Boyle Island Weather Forecast

    • 46
    • 51

    Slight Chance Rain Showers

    • 41
    • 53

    Rain Showers

    • 36
    • 48

    Slight Chance Rain Showers

    • 41
    • 45

    Partly Sunny

    • 44
    • 52

    Slight Chance Rain Showers

    • 47
    • 55

    Partly Sunny

    • 46
    • 55

    Partly Sunny

Today 18 Apr Southwest Suffolk

Mostly cloudy. Highs in the upper 50s. East Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 18 Apr Southwest Suffolk

Cloudy. Patchy fog this Evening, then Areas of fog after midnight. Lows in the upper 40s. Southeast Winds 5 to 10 Mph. Gusts up to 20 Mph this evening.

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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 9 April, 2026

    24.1 °F

  • Average April

    49.5 °F

  • Highest 16 April, 2026

    81 °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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