East Islip Weather Forecast

    • 73
    • 88

    Isolated Thunderstorms

    • 69
    • 84

    Partly Sunny

    • 72
    • 81

    Rain Showers Likely

    • 69
    • 85

    Chance Rain Showers

    • 66
    • 82

    Mostly Sunny

    • 69
    • 80

    Partly Sunny

    • 71
    • 82

    Partly Sunny

Today 17 Jul Southwest Suffolk

Partly sunny with a chance of Showers and Thunderstorms. Highs in the upper 80s. Southwest Winds 15 to 20 Mph. Chance of rain 30 percent. Heat index Values up to 102.

Tonight 17 Jul Southwest Suffolk

Mostly clear. Lows in the lower 70s. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

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East Islip Temperature Statistics

July Temperature

Islip, Long Island Mac Arthur Airport (5.6 miles)

  • Lowest 5 July, 2025

    64.7 °F

  • Average July

    77.3 °F

  • Highest 8 July, 2025

    92.6 °F

Climate (2020–Present)

Islip, Long Island Mac Arthur Airport (5.6 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    55.2 °F

  • Average High 2020–2025

    63 °F
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