Central Islip Weather Forecast

    • 58
    • 68

    Chance Rain Showers

    • 59
    • 80

    Mostly Sunny

    • 59
    • 75

    Mostly Sunny

    • 59
    • 74

    Partly Sunny

    • 60
    • 77

    Slight Chance Rain Showers

    • 59
    • 75

    Slight Chance Thunderstorms

Today 10 Sep Southwest Suffolk

Mostly cloudy with a 30 percent chance of Showers. Near steady temperature in the upper 60s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 10 Sep Southwest Suffolk

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the upper 50s. Northeast Winds 10 to 15 Mph.

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Central Islip Temperature Statistics

September Temperature

Islip, Long Island Mac Arthur Airport (5 miles)

  • Lowest 2 September, 2025

    57.9 °F

  • Average September

    68.6 °F

  • Highest 6 September, 2025

    81 °F

Climate (2020–Present)

Islip, Long Island Mac Arthur Airport (5 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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