Barrett Beach Weather Forecast
- 73
- 78
Chance Thunderstorms
- 71
- 82
Chance Thunderstorms
- 67
- 79
Mostly Sunny
- 70
- 76
Partly Sunny
- 72
- 77
Partly Sunny
- 74
- 79
Mostly Cloudy
Today 19 Jul Southwest Suffolk
Mostly sunny. Highs in the lower 80s. East Winds around 5 Mph, becoming south in the afternoon.
Tonight 19 Jul Southwest Suffolk
Mostly clear. Lows in the mid 60s. North Winds around 5 Mph.
Barrett Beach Temperature Statistics
July Temperature
Islip, Long Island Mac Arthur Airport (8.7 miles)
Lowest 5 July, 2025
64.7 °FAverage July
77.6 °FHighest 8 July, 2025
92.6 °F
Climate (2020–Present)
Islip, Long Island Mac Arthur Airport (8.7 miles)
Average Low 2020–2025
47.5 °FAverage 2020–2025
55.2 °FAverage High 2020–2025
63 °F