Long Island Mac Arthur Airport Weather Forecast

    • 31
    • 49

    Rain Likely

    • 23
    • 36

    Partly Sunny

    • 26
    • 37

    Chance Flurries

    • 29
    • 42

    Chance Snow

    • 19
    • 39

    Slight Chance Rain/Snow

    • 21
    • 32

    Partly Sunny

Today 10 Dec Southwest Suffolk

Partly sunny in the Morning, then cloudy with rain likely in the afternoon. Windy with Highs in the upper 40s. Southwest Winds 20 to 30 Mph with Gusts up to 45 Mph. Chance of rain 70 percent.

Tonight 10 Dec Southwest Suffolk

Mostly cloudy. A chance of rain in the evening. Breezy with Lows in the lower 30s. West Winds 20 to 25 Mph with Gusts up to 40 Mph. Chance of rain 50 percent.

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Long Island Mac Arthur Airport Temperature Statistics

December Temperature

Islip, Long Island Mac Arthur Airport (0 miles)

  • Lowest 5 December, 2025

    21 °F

  • Average December

    36.3 °F

  • Highest 1 December, 2025

    46 °F

Climate (2020–Present)

Islip, Long Island Mac Arthur Airport (0 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    55.3 °F

  • Average High 2020–2025

    63.1 °F
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