News Headlines
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Overcast
27°F
-3°C
| Humidity | 35% |
| Wind Speed | N 7 mph |
| Barometer | 30.28 in (1025.5 mb) |
| Dewpoint | 3°F (-16°C) |
| Visibility | 10.00 mi |
| Wind Chill | 19°F (-7°C) |
| Last update | 8 Dec 6:56 pm EST |
Extended Forecast for
Head of the Harbor NY
Tonight

Low: 16 °F
Partly Cloudy
Tuesday

High: 37 °F
Increasing
CloudsTuesday Night

Low: 32 °F
Slight Chance
SnowWednesday
High: 46 °F
Chance Rain
then Rain
LikelyWednesday Night

Low: 33 °F
Chance Rain
Thursday

High: 41 °F
Mostly Sunny
Thursday Night

Low: 25 °F
Partly Cloudy
Friday

High: 37 °F
Mostly Sunny
Friday Night

Low: 26 °F
Chance Snow
Detailed Forecast
Tonight
Partly cloudy, with a low around 16. Wind chill values between 10 and 15. North wind 5 to 10 mph.
Tuesday
Increasing clouds, with a high near 37. Wind chill values between 10 and 20. Light and variable wind becoming south 5 to 7 mph in the afternoon.
Tuesday Night
A 20 percent chance of snow before 1am. Mostly cloudy, with a low around 32. Southwest wind 8 to 11 mph, with gusts as high as 22 mph.
Wednesday
Rain likely, mainly after 1pm. Mostly cloudy, with a high near 46. Southwest wind 10 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 40 percent chance of rain before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 33. Southwest wind 11 to 14 mph, with gusts as high as 29 mph.
Thursday
Mostly sunny, with a high near 41.
Thursday Night
Partly cloudy, with a low around 25.
Friday
Mostly sunny, with a high near 37.
Friday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 26.
Saturday
A 30 percent chance of snow showers before 7am. Partly sunny, with a high near 38.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
Mostly sunny, with a high near 33.
Sunday Night
Mostly clear, with a low around 19.
Monday
Mostly sunny, with a high near 34.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
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)
6:30 pm EST Dec 8, 2025
7pm EST Dec 8, 2025-6pm EST Dec 15, 2025


