Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds and Breezy
26°F
-3°C
| Humidity | 55% |
| Wind Speed | NW 21 G 33 mph |
| Barometer | 29.78 in |
| Dewpoint | 12°F (-11°C) |
| Visibility | 10.00 mi |
| Wind Chill | 12°F (-11°C) |
| Last update | 1 Jan 3:56 pm EST |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Tonight

Low: 23 °F
Chance
FlurriesFriday

High: 32 °F
Decreasing
CloudsFriday Night

Low: 20 °F
Partly Cloudy
Saturday

High: 33 °F
Increasing
CloudsSaturday Night

Low: 23 °F
Cloudy
Sunday

High: 34 °F
Mostly Sunny
Sunday Night

Low: 19 °F
Partly Cloudy
Monday

High: 35 °F
Partly Sunny
Monday Night

Low: 25 °F
Mostly Cloudy
Detailed Forecast
Tonight
A chance of flurries after 1am. Increasing clouds, with a steady temperature around 23. Wind chill values between 10 and 15. West wind 8 to 16 mph.
Friday
Cloudy, then gradually becoming mostly sunny, with a high near 32. Wind chill values between 10 and 20. West wind 10 to 14 mph.
Friday Night
Partly cloudy, with a low around 20. Wind chill values between 15 and 20. West wind around 9 mph.
Saturday
Increasing clouds, with a high near 33. Wind chill values between 15 and 25. West wind 8 to 10 mph.
Saturday Night
Cloudy, with a low around 23. Light west wind.
Sunday
Mostly sunny, with a high near 34.
Sunday Night
Partly cloudy, with a low around 19.
Monday
Partly sunny, with a high near 35.
Monday Night
Mostly cloudy, with a low around 25.
Tuesday
Mostly cloudy, with a high near 43.
Tuesday Night
Cloudy, with a low around 33.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 47.
Wednesday Night
Partly cloudy, with a low around 32.
Thursday
Mostly sunny, with a high near 44.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
40.81°N 73.11°W (Elev. 98 ft)
40.81°N 73.11°W (Elev. 98 ft)
12:21 pm EST Jan 1, 2026
4pm EST Jan 1, 2026-6pm EST Jan 8, 2026


