Mount Sinai Harbor Weather Forecast

    • 54
    • 65

    Sunny

    • 56
    • 66

    Increasing Clouds

    • 60
    • 65

    Chance Thunderstorms

    • 55
    • 70

    Mostly Sunny

    • 59
    • 65

    Chance Rain Showers

    • 60
    • 75

    Slight Chance Rain Showers

    • 57
    • 71

    Chance Rain Showers

Today 21 May Northwest Suffolk

Mostly clear. Lows in the lower 50s. Northwest Winds 10 to 15 Mph. Gusts up to 25 Mph this evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Sinai Harbor Temperature Statistics

May Temperature

Islip, Long Island Mac Arthur Airport (11.8 miles)

  • Lowest 12 May, 2019

    43 °F
  • Average May

    55.4 °F
  • Highest 19 May, 2019

    73 °F

Climate (2010–Present)

Islip, Long Island Mac Arthur Airport (11.8 miles)

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  • Average Low 2010–Present

    45.3 °F
  • Average 2010–Present

    52.8 °F
  • Average High 2010–Present

    60.2 °F
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