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Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds
54°F
12°C
| Humidity | 80% |
| Wind Speed | Calm |
| Barometer | 30.15 in (1020.8 mb) |
| Dewpoint | 48°F (9°C) |
| Visibility | 10.00 mi |
| Last update | 4 Jun 5:56 am EDT |
Extended Forecast for
Brentwood NY
Today
High: 83 °F
Sunny
Tonight
Low: 61 °F
Mostly Clear
Friday
High: 88 °F
Mostly Sunny
Friday Night
Low: 66 °F
Partly Cloudy
Saturday
High: 88 °F
Mostly Sunny
Saturday Night
Low: 68 °F
Showers
LikelySunday
High: 84 °F
Showers
LikelySunday Night
Low: 60 °F
Showers
Likely then
Partly CloudyMonday
High: 74 °F
Mostly Sunny
Detailed Forecast
Today
Sunny, with a high near 83. Light southwest wind becoming south 5 to 10 mph in the morning.
Tonight
Mostly clear, with a low around 61. Southwest wind 3 to 8 mph.
Friday
Mostly sunny, with a high near 88. Calm wind becoming southwest 5 to 9 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 66. Southwest wind around 6 mph.
Saturday
Mostly sunny, with a high near 88. Southwest wind 6 to 13 mph.
Saturday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Sunday
Showers likely, mainly after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 60%.
Sunday Night
Showers likely before 8pm. Partly cloudy, with a low around 60. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 74.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Partly cloudy, with a low around 60.
Wednesday
Mostly sunny, with a high near 80.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Brentwood NY
40.78°N 73.24°W (Elev. 66 ft)
40.78°N 73.24°W (Elev. 66 ft)
3:07 am EDT Jun 4, 2026
6am EDT Jun 4, 2026-6pm EDT Jun 10, 2026
Additional Resources
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