Nesconset Weather Forecast

    • 59
    • 80

    Increasing Clouds

    • 59
    • 73

    Chance Rain Showers

    • 61
    • 70

    Chance Rain Showers

    • 62
    • 79

    Mostly Sunny

    • 54
    • 81

    Mostly Sunny

    • 53
    • 69

    Mostly Sunny

Today 15 Sep Northwest Suffolk

Mostly sunny. Highs in the upper 70s. East Winds around 10 Mph.

Tonight 15 Sep Northwest Suffolk

Partly cloudy. Lows in the upper 50s. East Winds 5 to 10 Mph.

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Nesconset Temperature Statistics

September Temperature

Islip, Long Island Mac Arthur Airport (4.3 miles)

  • Lowest 9 September, 2025

    54 °F

  • Average September

    69 °F

  • Highest 6 September, 2025

    81 °F

Climate (2020–Present)

Islip, Long Island Mac Arthur Airport (4.3 miles)

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  • Average Low 2020–2025

    47.4 °F

  • Average 2020–2025

    55.2 °F

  • Average High 2020–2025

    63.1 °F
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