Holbrook Weather Forecast

    • 76
    • 94

    Mostly Sunny

    • 72
    • 91

    Chance Thunderstorms

    • 66
    • 82

    Rain Showers Likely

    • 64
    • 76

    Partly Sunny

    • 65
    • 81

    Mostly Sunny

    • 66
    • 83

    Mostly Sunny

Today 29 Jul Southwest Suffolk

Sunny with Highs in the lower 90s. Southwest Winds 5 to 10 Mph. Heat index Values up to 102.

Tonight 29 Jul Southwest Suffolk

Mostly clear. Humid with Lows in the mid 70s. Southwest Winds 5 to 10 Mph.

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Holbrook Temperature Statistics

July Temperature

Islip, Long Island Mac Arthur Airport (1.2 miles)

  • Lowest 23 July, 2025

    63.6 °F

  • Average July

    78.1 °F

  • Highest 25 July, 2025

    93.7 °F

Climate (2020–Present)

Islip, Long Island Mac Arthur Airport (1.2 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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