Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
46°F
8°C
| Humidity | 71% |
| Wind Speed | SE 12 mph |
| Barometer | 30.40 in (1029.4 mb) |
| Dewpoint | 37°F (3°C) |
| Visibility | 10.00 mi |
| Wind Chill | 40°F (4°C) |
| Last update | 12 Apr 6:56 pm EDT |
Extended Forecast for
Brentwood NY
Tonight
Low: 46 °F
Mostly Cloudy
Monday
High: 68 °F
Mostly Cloudy
Monday Night
Low: 55 °F
Partly Cloudy
Tuesday
High: 73 °F
Mostly Sunny
Tuesday Night
Low: 56 °F
Slight Chance
ShowersWednesday
High: 76 °F
Mostly Sunny
Wednesday Night
Low: 55 °F
Chance
ShowersThursday
High: 72 °F
Partly Sunny
Thursday Night
Low: 54 °F
Mostly Cloudy
Detailed Forecast
Tonight
Mostly cloudy, with a low around 46. South wind 5 to 8 mph.
Monday
Mostly cloudy, with a high near 68. Southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around 55. Southwest wind 6 to 9 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 73. South wind 5 to 9 mph.
Tuesday Night
A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 56. Southwest wind 5 to 8 mph.
Wednesday
Mostly sunny, with a high near 76.
Wednesday Night
A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 55.
Thursday
Partly sunny, with a high near 72.
Thursday Night
Mostly cloudy, with a low around 54.
Friday
Mostly sunny, with a high near 72.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Mostly sunny, with a high near 66.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 50.
Sunday
Mostly cloudy, with a high near 65.
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)
7:02 pm EDT Apr 12, 2026
7pm EDT Apr 12, 2026-6pm EDT Apr 19, 2026
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