Holbrook Weather Forecast

    • 70
    • 84

    Decreasing Clouds

    • 71
    • 88

    Mostly Sunny

    • 72
    • 87

    Chance Rain Showers

    • 71
    • 85

    Chance Thunderstorms

    • 71
    • 84

    Slight Chance Thunderstorms

    • 70
    • 82

    Chance Rain Showers

Today 5 Jul Southwest Suffolk

Mostly sunny. Highs in the lower 80s. Northeast Winds around 5 Mph, becoming south with Gusts up to 20 Mph in the afternoon.

Tonight 5 Jul Southwest Suffolk

Partly cloudy. Lows around 70. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Holbrook Temperature Statistics

July Temperature

Islip, Long Island Mac Arthur Airport (1.2 miles)

  • Lowest 2 July, 2025

    72 °F

  • Average July

    75.6 °F

  • Highest 1 July, 2025

    86 °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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