Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair
69°F
21°C
| Humidity | 96% |
| Wind Speed | SW 3 mph |
| Barometer | 30.25 in (1024.4 mb) |
| Dewpoint | 68°F (20°C) |
| Visibility | 10.00 mi |
| Last update | 17 Sep 2:56 am EDT |
Extended Forecast for
Head of the Harbor NY
Overnight
Low: 67 °F
Mostly Cloudy
Thursday
High: 79 °F
Mostly Cloudy
Thursday Night
Low: 67 °F
Chance
ShowersFriday
High: 78 °F
Mostly Sunny
Friday Night
Low: 57 °F
Partly Cloudy
Saturday
High: 69 °F
Mostly Sunny
Saturday Night
Low: 57 °F
Mostly Cloudy
Sunday
High: 71 °F
Showers
Sunday Night
Low: 57 °F
Showers
Detailed Forecast
Overnight
Mostly cloudy, with a low around 67. Calm wind.
Thursday
Mostly cloudy, with a high near 79. Calm wind becoming south 5 to 9 mph in the morning.
Thursday Night
A 40 percent chance of showers, mainly between 2am and 5am. Mostly cloudy, with a low around 67. South wind around 8 mph.
Friday
Mostly sunny, with a high near 78. North wind 8 to 10 mph.
Friday Night
Partly cloudy, with a low around 57. North wind 8 to 10 mph.
Saturday
Mostly sunny, with a high near 69.
Saturday Night
Mostly cloudy, with a low around 57.
Sunday
Showers. High near 71. Chance of precipitation is 80%.
Sunday Night
Showers, mainly before 2am. Low around 57. Chance of precipitation is 80%.
Monday
A 30 percent chance of showers before 8am. Partly sunny, with a high near 68.
Monday Night
Mostly cloudy, with a low around 55.
Tuesday
Partly sunny, with a high near 67.
Tuesday Night
Partly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 67.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Head of the Harbor NY
40.88°N 73.16°W (Elev. 148 ft)
40.88°N 73.16°W (Elev. 148 ft)
1:55 am EDT Sep 17, 2026
3am EDT Sep 17, 2026-6pm EDT Sep 23, 2026
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