Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds
35°F
2°C
| Humidity | 46% |
| Wind Speed | N 16 G 25 mph |
| Barometer | 30.44 in (1030.9 mb) |
| Dewpoint | 16°F (-9°C) |
| Visibility | 10.00 mi |
| Wind Chill | 25°F (-4°C) |
| Last update | 7 Apr 10:56 pm EDT |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Tonight
Low: 27 °F
Clear
Wednesday
High: 47 °F
Sunny
Wednesday Night
Low: 32 °F
Mostly Clear
Thursday
High: 50 °F
Mostly Sunny
Thursday Night
Low: 38 °F
Partly Cloudy
Friday
High: 57 °F
Mostly Sunny
Friday Night
Low: 45 °F
Mostly Cloudy
Saturday
High: 59 °F
Mostly Sunny
Saturday Night
Low: 40 °F
Mostly Clear
Detailed Forecast
Tonight
Clear, with a low around 27. Wind chill values between 15 and 20. North wind 11 to 18 mph, with gusts as high as 28 mph.
Wednesday
Sunny, with a high near 47. Wind chill values between 20 and 30 early. North wind around 7 mph becoming southeast in the afternoon.
Wednesday Night
Mostly clear, with a low around 32. Calm wind.
Thursday
Mostly sunny, with a high near 50. Calm wind becoming southeast 5 to 8 mph in the morning.
Thursday Night
Partly cloudy, with a low around 38. Light southeast wind.
Friday
Mostly sunny, with a high near 57.
Friday Night
Mostly cloudy, with a low around 45.
Saturday
Mostly sunny, with a high near 59.
Saturday Night
Mostly clear, with a low around 40.
Sunday
Sunny, with a high near 54.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Partly sunny, with a high near 63.
Monday Night
Mostly cloudy, with a low around 52.
Tuesday
Partly sunny, with a high near 67.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
40.8°N 73.09°W (Elev. 98 ft)
40.8°N 73.09°W (Elev. 98 ft)
6:49 pm EDT Apr 7, 2026
11pm EDT Apr 7, 2026-6pm EDT Apr 14, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
