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Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds
81°F
27°C
| Humidity | 41% |
| Wind Speed | Calm |
| Barometer | 30.18 in (1021.8 mb) |
| Dewpoint | 55°F (13°C) |
| Visibility | 10.00 mi |
| Heat Index | 81°F (27°C) |
| Last update | 12 Jul 11:56 am EDT |
Extended Forecast for
Brentwood NY
This Afternoon
High: 83 °F
Sunny
Tonight
Low: 66 °F
Clear
Monday
High: 85 °F
Sunny
Monday Night
Low: 69 °F
Mostly Clear
Tuesday
High: 91 °F
Sunny
Tuesday Night
Low: 74 °F
Mostly Clear
Wednesday
High: 95 °F
Sunny
Wednesday Night
Low: 73 °F
Partly Cloudy
Thursday
High: 89 °F
Mostly Sunny
Detailed Forecast
This Afternoon
Sunny, with a high near 83. East wind 5 to 7 mph becoming south.
Tonight
Clear, with a low around 66. South wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 85. Light southwest wind becoming south 6 to 11 mph in the morning.
Monday Night
Mostly clear, with a low around 69. Southwest wind 7 to 9 mph.
Tuesday
Sunny, with a high near 91. Southwest wind 7 to 14 mph.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
Sunny, with a high near 95.
Wednesday Night
Partly cloudy, with a low around 73.
Thursday
Mostly sunny, with a high near 89.
Thursday Night
Partly cloudy, with a low around 72.
Friday
Mostly sunny, with a high near 86.
Friday Night
Partly cloudy, with a low around 70.
Saturday
Mostly sunny, with a high near 87.
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)
7:47 am EDT Jul 12, 2026
12pm EDT Jul 12, 2026-6pm EDT Jul 18, 2026
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