Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
44°F
7°C
| Humidity | 71% |
| Wind Speed | S 9 mph |
| Barometer | 30.51 in (1033.1 mb) |
| Dewpoint | 35°F (2°C) |
| Visibility | 10.00 mi |
| Wind Chill | 39°F (4°C) |
| Last update | 9 Apr 5:56 pm EDT |
Extended Forecast for
Brentwood NY
Tonight
Low: 37 °F
Partly Cloudy
then Patchy
FogFriday
High: 55 °F
Patchy Fog
then Mostly
SunnyFriday Night
Low: 44 °F
Mostly Cloudy
Saturday
High: 60 °F
Sunny
Saturday Night
Low: 41 °F
Clear
Sunday
High: 54 °F
Mostly Sunny
Sunday Night
Low: 45 °F
Mostly Cloudy
Monday
High: 65 °F
Mostly Cloudy
Monday Night
Low: 54 °F
Mostly Cloudy
Detailed Forecast
Tonight
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 37. South wind 5 to 9 mph becoming calm in the evening.
Friday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 55. Light southwest wind becoming south 6 to 11 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 44. South wind 7 to 13 mph.
Saturday
Sunny, with a high near 60. Northwest wind 11 to 14 mph.
Saturday Night
Clear, with a low around 41. North wind 3 to 5 mph.
Sunday
Mostly sunny, with a high near 54.
Sunday Night
Mostly cloudy, with a low around 45.
Monday
Mostly cloudy, with a high near 65.
Monday Night
Mostly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 71.
Tuesday Night
Mostly cloudy, with a low around 56.
Wednesday
Partly sunny, with a high near 71.
Wednesday Night
Mostly cloudy, with a low around 51.
Thursday
Partly sunny, 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)
2:47 pm EDT Apr 9, 2026
6pm EDT Apr 9, 2026-6pm EDT Apr 16, 2026
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