


Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Overcast
74°F
23°C
Humidity | 82% |
Wind Speed | E 6 mph |
Barometer | 30.16 in (1021.3 mb) |
Dewpoint | 68°F (20°C) |
Visibility | 10.00 mi |
Last update | 16 Aug 1:56 am EDT |
Extended Forecast for
Head of the Harbor NY
Overnight
Low: 67 °F
Mostly Cloudy
Saturday
High: 83 °F
Decreasing
CloudsSaturday Night
Low: 69 °F
Partly Cloudy
Sunday
High: 87 °F
Sunny
Sunday Night
Low: 65 °F
Chance
ShowersMonday
High: 77 °F
Partly Sunny
Monday Night
Low: 62 °F
Partly Cloudy
Tuesday
High: 78 °F
Mostly Sunny
Tuesday Night
Low: 64 °F
Mostly Cloudy
then Chance
Showers
Detailed Forecast
Overnight
Mostly cloudy, with a low around 67. Light east wind.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 83. East wind 3 to 6 mph.
Saturday Night
Partly cloudy, with a low around 69. South wind around 6 mph.
Sunday
Sunny, with a high near 87. South wind 6 to 9 mph.
Sunday Night
A 30 percent chance of showers, mainly before 2am. Mostly cloudy, with a low around 65. South wind 6 to 8 mph becoming north after midnight.
Monday
Partly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 64.
Wednesday
A 30 percent chance of showers before 2pm. Partly sunny, with a high near 79.
Wednesday Night
Mostly cloudy, with a low around 63.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 62.
Friday
Sunny, with a high near 82.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Head of the Harbor NY
40.9°N 73.15°W (Elev. 157 ft)
40.9°N 73.15°W (Elev. 157 ft)
2:28 am EDT Aug 16, 2025
2am EDT Aug 16, 2025-6pm EDT Aug 22, 2025