Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds
38°F
3°C
| Humidity | 65% |
| Wind Speed | S 7 mph |
| Barometer | 30.59 in (1035.7 mb) |
| Dewpoint | 27°F (-3°C) |
| Visibility | 10.00 mi |
| Wind Chill | 33°F (1°C) |
| Last update | 8 Apr 7:56 pm EDT |
Extended Forecast for
Brentwood NY
Tonight
Low: 32 °F
Frost
Thursday
High: 51 °F
Frost then
SunnyThursday Night
Low: 37 °F
Mostly Clear
Friday
High: 57 °F
Sunny
Friday Night
Low: 45 °F
Mostly Cloudy
then Slight
Chance
ShowersSaturday
High: 59 °F
Sunny
Saturday Night
Low: 40 °F
Mostly Clear
Sunday
High: 54 °F
Mostly Sunny
Sunday Night
Low: 44 °F
Mostly Cloudy
Detailed Forecast
Tonight
Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 32. Light and variable wind.
Thursday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 51. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 37. Light south wind.
Friday
Sunny, with a high near 57. Calm wind becoming south 5 to 9 mph in the afternoon.
Friday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 45. South wind 6 to 8 mph.
Saturday
Sunny, with a high near 59.
Saturday Night
Mostly clear, with a low around 40.
Sunday
Mostly sunny, with a high near 54.
Sunday Night
Mostly cloudy, with a low around 44.
Monday
Mostly cloudy, with a high near 64.
Monday Night
Mostly cloudy, with a low around 54.
Tuesday
Partly sunny, with a high near 71.
Tuesday Night
Mostly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 71.
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)
5:30 pm EDT Apr 8, 2026
8pm EDT Apr 8, 2026-6pm EDT Apr 15, 2026
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