Bellport Bay Weather Forecast

    • 67
    • 70

    Rain Likely

    • 59
    • 69

    Chance Rain

    • 57
    • 64

    Chance Rain Showers

    • 57
    • 64

    Breezy

    • 56
    • 63

    Chance Rain Showers

    • 57
    • 63

    Chance Rain Showers

Today 20 Sep Southwest Suffolk

Partly sunny. Highs in the upper 60s.

Tonight 20 Sep Southwest Suffolk

Rain likely. Lows in the lower 60s. Southwest Winds 10 to 15 Mph, becoming north 15 to 20 Mph after midnight. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Bellport Bay Temperature Statistics

September Temperature

Shirley, Brookhaven Airport (5.6 miles)

  • Lowest 15 September, 2026

    48.9 °F

  • Average September

    69.2 °F

  • Highest 10 September, 2026

    84.9 °F

Climate (2021–2026)

Shirley, Brookhaven Airport (5.6 miles)

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    54.5 °F

  • Average High 2021–2026

    62.5 °F
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