East Islip Weather Forecast

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    • 69

    Rain

    • 58
    • 68

    Chance Rain

    • 54
    • 66

    Chance Rain Showers

    • 54
    • 66

    Mostly Cloudy

    • 53
    • 66

    Chance Rain Showers

    • 54
    • 66

    Chance Rain Showers

Today 20 Sep Southwest Suffolk

Cloudy. A chance of Showers in the Morning, then Showers likely in the afternoon. Highs in the lower 70s. Southeast Winds 15 to 20 Mph. Chance of rain 70 percent.

Tonight 20 Sep Southwest Suffolk

Rain in the Evening, then Showers after midnight. Lows in the upper 50s. South Winds 10 to 15 Mph, becoming northwest 15 to 20 Mph after midnight. Gusts up to 30 Mph. Chance of rain 80 percent.

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East Islip Temperature Statistics

September Temperature

Islip, Long Island Mac Arthur Airport (5.6 miles)

  • Lowest 15 September, 2026

    52.6 °F

  • Average September

    71.1 °F

  • Highest 10 September, 2026

    86.6 °F

Climate (2021–2026)

Islip, Long Island Mac Arthur Airport (5.6 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    63.1 °F
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