Holbrook Weather Forecast

    • 33
    • 38

    Rain

    • 25
    • 51

    Rain

    • 24
    • 33

    Mostly Cloudy

    • 25
    • 35

    Partly Sunny

    • 19
    • 35

    Chance Snow

    • 20
    • 31

    Partly Sunny

Today 28 Dec Southwest Suffolk

Partly sunny in the Morning, then mostly cloudy with a slight chance of rain in the afternoon. Highs in the mid 40s. West Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 28 Dec Southwest Suffolk

Rain. Not as cool with Lows in the mid 30s. Southwest Winds 15 to 20 Mph. Chance of rain 90 percent.

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Holbrook Temperature Statistics

December Temperature

Islip, Long Island Mac Arthur Airport (1.2 miles)

  • Lowest 15 December, 2025

    19.9 °F

  • Average December

    35.8 °F

  • Highest 19 December, 2025

    57.9 °F

Climate (2020–Present)

Islip, Long Island Mac Arthur Airport (1.2 miles)

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  • Average Low 2020–2025

    47.4 °F

  • Average 2020–2025

    55.3 °F

  • Average High 2020–2025

    63.1 °F
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