Mount Sinai Harbor Weather Forecast

    • 62
    • 70

    Becoming Sunny

    • 64
    • 76

    Sunny

    • 62
    • 77

    Sunny

    • 64
    • 76

    Mostly Sunny

    • 65
    • 76

    Mostly Cloudy

    • 54
    • 72

    Rain Showers Likely

Today 3 Oct Northwest Suffolk

Sunny. Highs in the lower 70s. Southwest Winds 5 to 10 Mph.

Tonight 3 Oct Northwest Suffolk

Clear. Lows in the mid 50s. Southwest Winds 5 to 10 Mph.

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Mount Sinai Harbor Temperature Statistics

October Temperature

Islip, Long Island Mac Arthur Airport (11.8 miles)

  • Lowest

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  • Average October

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Climate (2020–Present)

Islip, Long Island Mac Arthur Airport (11.8 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    55.3 °F

  • Average High 2020–2025

    63.1 °F
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