Mount Sinai Harbor Weather Forecast

    • 49
    • 61

    Chance Rain Showers

    • 51
    • 60

    Rain Likely

    • 38
    • 56

    Slight Chance Rain

    • 42
    • 45

    Breezy

    • 47
    • 52

    Breezy

    • 42
    • 51

    Breezy

Today 8 Nov Northwest Suffolk

Mostly cloudy with a chance of Showers this Morning, then sunny this afternoon. Highs in the lower 60s. West Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 8 Nov Northwest Suffolk

Partly cloudy. Lows in the mid 40s. North Winds around 5 Mph, becoming east after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Sinai Harbor Temperature Statistics

November Temperature

Islip, Long Island Mac Arthur Airport (11.8 miles)

  • Lowest 2 November, 2025

    37 °F

  • Average November

    52.4 °F

  • Highest 5 November, 2025

    64 °F

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

    63.2 °F
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