Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
72°F
22°C
| Humidity | 71% |
| Wind Speed | S 7 mph |
| Barometer | 30.03 in (1016.9 mb) |
| Dewpoint | 62°F (17°C) |
| Visibility | 10.00 mi |
| Last update | 25 May 5:56 pm EDT |
Extended Forecast for
Brentwood NY
Tonight
Low: 58 °F
Mostly Cloudy
Tuesday
High: 79 °F
Partly Sunny
Tuesday Night
Low: 60 °F
Mostly Cloudy
Wednesday
High: 82 °F
Mostly Cloudy
Wednesday Night
Low: 63 °F
Slight Chance
T-stormsThursday
High: 79 °F
Mostly Sunny
Thursday Night
Low: 56 °F
Mostly Clear
Friday
High: 73 °F
Sunny
Friday Night
Low: 55 °F
Partly Cloudy
Detailed Forecast
Tonight
Mostly cloudy, with a low around 58. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Partly sunny, with a high near 79. Calm wind becoming south 5 to 7 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 60. Southwest wind around 5 mph.
Wednesday
Mostly cloudy, with a high near 82. Light southwest wind increasing to 5 to 9 mph in the morning.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 63. Southwest wind around 5 mph becoming northwest after midnight.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 56.
Friday
Sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 55.
Saturday
Mostly sunny, with a high near 72.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 71.
Sunday Night
Partly cloudy, with a low around 56.
Monday
Sunny, with a high near 75.
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)
3:13 pm EDT May 25, 2026
6pm EDT May 25, 2026-6pm EDT Jun 1, 2026
Additional Resources
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Hourly Weather Forecast
