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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.
Fair
71°F
22°C
| Humidity | 76% |
| Wind Speed | Calm |
| Barometer | 30.05 in (1017.4 mb) |
| Dewpoint | 63°F (17°C) |
| Visibility | 10.00 mi |
| Last update | 21 Jun 4:56 am EDT |
Extended Forecast for
Brentwood NY
Extreme Heat Watch June 22, 12:00pm until June 24, 08:00pm
Today
High: 87 °F
Sunny
Tonight
Low: 70 °F
Partly Cloudy
Sunday
High: 92 °F
Mostly Sunny
Sunday Night
Low: 75 °F
Mostly Clear
Monday
High: 96 °F
Sunny
Monday Night
Low: 74 °F
Mostly Clear
Tuesday
High: 95 °F
Sunny
Tuesday Night
Low: 74 °F
Partly Cloudy
Wednesday
High: 89 °F
Mostly Sunny
Detailed Forecast
Today
Sunny, with a high near 87. Calm wind becoming southwest 5 to 8 mph in the morning.
Tonight
Partly cloudy, with a low around 70. South wind around 7 mph.
Sunday
Mostly sunny, with a high near 92. Heat index values as high as 96. Southwest wind 10 to 14 mph.
Sunday Night
Mostly clear, with a low around 75. West wind 6 to 9 mph.
Monday
Sunny, with a high near 96. Northwest wind 5 to 8 mph becoming southwest in the afternoon.
Monday Night
Mostly clear, with a low around 74.
Tuesday
Sunny, with a high near 95.
Tuesday Night
Partly cloudy, with a low around 74.
Wednesday
Mostly sunny, with a high near 89.
Wednesday Night
Mostly cloudy, with a low around 66.
Thursday
Partly sunny, with a high near 81.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
Additional Forecasts and Information
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Point Forecast:
Brentwood NY
40.8°N 73.23°W (Elev. 98 ft)
40.8°N 73.23°W (Elev. 98 ft)
3:17 am EDT Jun 21, 2025
5am EDT Jun 21, 2025-6pm EDT Jun 27, 2025
Additional Resources
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Hourly Weather Forecast
