Central Islip Weather Forecast

    • 51
    • 71

    Rain Showers Likely

    • 53
    • 69

    Slight Chance Rain Showers

    • 55
    • 72

    Mostly Sunny

    • 59
    • 77

    Mostly Sunny

    • 63
    • 80

    Partly Sunny

    • 64
    • 81

    Mostly Cloudy

Today 31 May Southwest Suffolk

Showers with a chance of Thunderstorms in the Morning, then Showers likely with a chance of Thunderstorms in the afternoon. Some Thunderstorms may produce heavy rainfall in the morning. Highs around 70. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 90 percent.

Tonight 31 May Southwest Suffolk

Showers with a chance of Thunderstorms. Areas of fog. Some Thunderstorms may produce heavy rainfall. Near steady temperature in the upper 50s. Southeast Winds 5 to 10 Mph. Chance of rain near 100 percent.

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Central Islip Temperature Statistics

May Temperature

Islip, Long Island Mac Arthur Airport (5 miles)

  • Lowest 23 May, 2025

    46.7 °F

  • Average May

    61.6 °F

  • Highest 11 May, 2025

    78.7 °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 °F
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