News Headlines
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
59°F
15°C
| Humidity | 83% |
| Wind Speed | E 7 mph |
| Barometer | 30.38 in (1028.5 mb) |
| Dewpoint | 54°F (12°C) |
| Visibility | 10.00 mi |
| Last update | 11 Oct 8:56 am EDT |
Extended Forecast for
Brentwood NY
Today
High: 65 °F
Rain Likely
then RainTonight
Low: 56 °F
Rain then
Rain LikelyColumbus Day
High: 69 °F
Chance Rain
then SunnyMonday Night
Low: 54 °F
Mostly Clear
Tuesday
High: 68 °F
Mostly Sunny
Tuesday Night
Low: 60 °F
Partly Cloudy
Wednesday
High: 73 °F
Sunny
Wednesday Night
Low: 51 °F
Mostly Clear
Thursday
High: 64 °F
Mostly Sunny
Detailed Forecast
Today
Rain, mainly after 11am. High near 65. East wind 10 to 13 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Tonight
Rain and possibly a thunderstorm, mainly before 2am, then a chance of rain and thunderstorms after 2am. Low around 56. East wind 9 to 15 mph becoming north after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Columbus Day
A chance of rain before 8am, then a chance of showers between 8am and 11am. Cloudy through mid morning, then gradual clearing, with a high near 69. North wind 9 to 13 mph. Chance of precipitation is 40%.
Monday Night
Mostly clear, with a low around 54. North wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 68. Light and variable wind becoming south 5 to 9 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 60.
Wednesday
Sunny, with a high near 73.
Wednesday Night
Mostly clear, with a low around 51.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 49.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 65.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 48.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 60.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Brentwood NY
40.78°N 73.27°W (Elev. 98 ft)
40.78°N 73.27°W (Elev. 98 ft)
9:06 am EDT Oct 11, 2026
9am EDT Oct 11, 2026-6pm EDT Oct 17, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
