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Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair
39°F
4°C
| Humidity | 89% |
| Wind Speed | Calm |
| Barometer | 30.48 in (1032.2 mb) |
| Dewpoint | 36°F (2°C) |
| Visibility | 10.00 mi |
| Last update | 19 Oct 4:56 am EDT |
Extended Forecast for
Brentwood NY
Today
High: 61 °F
Sunny
Tonight
Low: 48 °F
Increasing
CloudsTuesday
High: 64 °F
Mostly Cloudy
Tuesday Night
Low: 46 °F
Partly Cloudy
Wednesday
High: 60 °F
Mostly Sunny
Wednesday Night
Low: 43 °F
Partly Cloudy
Thursday
High: 64 °F
Sunny
Thursday Night
Low: 45 °F
Clear
Friday
High: 58 °F
Sunny
Detailed Forecast
Today
Sunny, with a high near 61. Northeast wind 5 to 10 mph.
Tonight
Increasing clouds, with a low around 48. North wind 7 to 11 mph, with gusts as high as 22 mph.
Tuesday
Mostly cloudy, with a high near 64. North wind around 15 mph, with gusts as high as 26 mph.
Tuesday Night
Partly cloudy, with a low around 46. Northeast wind 10 to 15 mph, with gusts as high as 28 mph.
Wednesday
Mostly sunny, with a high near 60. Northeast wind 14 to 16 mph, with gusts as high as 28 mph.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Sunny, with a high near 64.
Thursday Night
Clear, with a low around 45.
Friday
Sunny, with a high near 58.
Friday Night
Mostly clear, with a low around 41.
Saturday
Sunny, with a high near 58.
Saturday Night
Mostly clear, with a low around 42.
Sunday
Sunny, with a high near 63.
Additional Forecasts and Information
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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)
5:21 am EDT Oct 19, 2026
5am EDT Oct 19, 2026-6pm EDT Oct 25, 2026
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