Mount Sinai Harbor Weather Forecast

    • 74
    • 86

    Rain Showers

    • 69
    • 79

    Rain Showers Likely

    • 76
    • 87

    Partly Sunny

    • 79
    • 92

    Mostly Sunny

    • 76
    • 92

    Slight Chance Thunderstorms

    • 73
    • 84

    Chance Thunderstorms

Today 17 Jul Northwest Suffolk

Showers with Thunderstorms likely this Evening, then Showers likely with a slight chance of Thunderstorms after midnight. Some Thunderstorms may produce gusty Winds and heavy rainfall this evening. Some Thunderstorms may produce heavy rainfall after midnight. Lows in the mid 70s. Southwest Winds 5 to 10 Mph, becoming north after midnight. Chance of rain 80 percent.

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Mount Sinai Harbor Temperature Statistics

July Temperature

Islip, Long Island Mac Arthur Airport (11.8 miles)

  • Lowest 9 July, 2019

    64 °F

  • Average July

    77.1 °F

  • Highest 14 July, 2019

    91.9 °F

Climate (2010–Present)

Islip, Long Island Mac Arthur Airport (11.8 miles)

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  • Average Low 2010–Present

    46.1 °F

  • Average 2010–Present

    53.6 °F

  • Average High 2010–Present

    61 °F
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