Oyster Bay Harbor Weather Forecast

    • 64
    • 70

    Rain Showers Likely

    • 65
    • 79

    Partly Sunny

    • 59
    • 80

    Mostly Sunny

    • 58
    • 71

    Mostly Sunny

    • 61
    • 70

    Partly Sunny

    • 63
    • 74

    Partly Sunny

    • 65
    • 78

    Partly Sunny

Today 17 Sep Northern Nassau

Showers likely with a chance of Thunderstorms. Near steady temperature in the upper 60s. Northeast Winds around 15 Mph. Chance of rain 70 percent.

Tonight 17 Sep Northern Nassau

Mostly cloudy. Showers likely with a chance of Thunderstorms in the Evening, then a chance of Showers after midnight. Patchy fog after midnight. Lows in the lower 60s. Northeast Winds 10 to 15 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Oyster Bay Harbor Temperature Statistics

September Temperature

Farmingdale - Republic Airport (11.2 miles)

  • Lowest 9 September, 2025

    53.1 °F

  • Average September

    67.3 °F

  • Highest 5 September, 2025

    80.1 °F

Climate (2020–Present)

Farmingdale - Republic Airport (11.2 miles)

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  • Average Low 2020–2025

    48.5 °F

  • Average 2020–2025

    56 °F

  • Average High 2020–2025

    63.4 °F
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