Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
51°F
11°C
| Humidity | 92% |
| Wind Speed | SW 14 mph |
| Barometer | 30.12 in (1020.1 mb) |
| Dewpoint | 49°F (9°C) |
| Visibility | 10.00 mi |
| Wind Chill | 46°F (8°C) |
| Last update | 3 Apr 8:56 pm EDT |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Tonight

Low: 50 °F
Patchy Fog
Saturday
High: 63 °F
Patchy Fog
then Slight
Chance
ShowersSaturday Night

Low: 42 °F
Chance
ShowersSunday

High: 60 °F
Showers
Sunday Night

Low: 40 °F
Gradual
ClearingMonday

High: 53 °F
Sunny
Monday Night

Low: 39 °F
Partly Cloudy
Tuesday

High: 51 °F
Mostly Sunny
Tuesday Night

Low: 31 °F
Mostly Clear
Detailed Forecast
Tonight
Patchy fog before 11pm, then patchy fog after 2am. Otherwise, mostly cloudy, with a low around 50. Southwest wind 9 to 13 mph.
Saturday
A 20 percent chance of showers after 2pm. Patchy fog before 11am. Otherwise, partly sunny, with a high near 63. Light and variable wind becoming east 8 to 13 mph in the morning.
Saturday Night
A 40 percent chance of showers, mainly after 8pm. Cloudy, with a low around 42. East wind 9 to 15 mph.
Sunday
Showers before 11am, then showers and possibly a thunderstorm between 11am and 2pm, then showers after 2pm. High near 60. Southwest wind 14 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Cloudy during the early evening, then gradual clearing, with a low around 40. Northwest wind around 11 mph.
Monday
Sunny, with a high near 53.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
Mostly sunny, with a high near 51.
Tuesday Night
Mostly clear, with a low around 31.
Wednesday
Sunny, with a high near 48.
Wednesday Night
Mostly clear, with a low around 36.
Thursday
Mostly sunny, with a high near 56.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Mostly sunny, with a high near 60.
Additional Forecasts and Information
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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)
2:23 pm EDT Apr 3, 2026
9pm EDT Apr 3, 2026-6pm EDT Apr 10, 2026


