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.
Holbrook Temperature Statistics
July Temperature
Islip, Long Island Mac Arthur Airport (1.2 miles)
Lowest 23 July, 2025
63.6 °FAverage July
78.1 °FHighest 25 July, 2025
93.7 °F
Climate (2020–Present)
Islip, Long Island Mac Arthur Airport (1.2 miles)
Average Low 2020–2025
47.5 °FAverage 2020–2025
55.2 °FAverage High 2020–2025
63 °F