Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Overcast
60°F
16°C
| Humidity | 90% |
| Wind Speed | N 8 mph |
| Barometer | 30.02 in (1016.5 mb) |
| Dewpoint | 57°F (14°C) |
| Visibility | 10.00 mi |
| Last update | 14 Oct 10:56 pm EDT |
Extended Forecast for
Brentwood NY
Tonight
Low: 53 °F
Slight Chance
Light RainWednesday
High: 65 °F
Mostly Sunny
Wednesday Night
Low: 43 °F
Mostly Clear
Thursday
High: 58 °F
Sunny
Thursday Night
Low: 42 °F
Mostly Clear
Friday
High: 62 °F
Sunny
Friday Night
Low: 45 °F
Mostly Clear
Saturday
High: 65 °F
Mostly Sunny
Saturday Night
Low: 54 °F
Partly Cloudy
Detailed Forecast
Tonight
A slight chance of drizzle or light rain before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 53. North wind 6 to 9 mph. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 65. North wind 7 to 15 mph.
Wednesday Night
Mostly clear, with a low around 43. North wind 10 to 14 mph.
Thursday
Sunny, with a high near 58. North wind 13 to 15 mph.
Thursday Night
Mostly clear, with a low around 42. North wind 10 to 13 mph.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 45.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 70.
Sunday Night
Showers likely. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Monday
A 40 percent chance of showers. Partly sunny, with a high near 66.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 51.
Tuesday
Mostly sunny, with a high near 66.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Brentwood NY
40.75°N 73.24°W (Elev. 49 ft)
40.75°N 73.24°W (Elev. 49 ft)
6:57 pm EDT Oct 14, 2025
11pm EDT Oct 14, 2025-6pm EDT Oct 21, 2025
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
