Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Partly Cloudy
74°F
23°C
| Humidity | 54% |
| Wind Speed | W 5 mph |
| Barometer | 29.84 in (1010.3 mb) |
| Dewpoint | 56°F (13°C) |
| Visibility | 10.00 mi |
| Last update | 17 Apr 10:56 am EDT |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Today
High: 75 °F
Scattered
ShowersTonight
Low: 51 °F
Scattered
Showers then
Partly CloudySaturday
High: 62 °F
Partly Sunny
Saturday Night
Low: 47 °F
Mostly Cloudy
then Slight
Chance
ShowersSunday
High: 57 °F
Showers
Sunday Night
Low: 38 °F
Showers then
Chance
ShowersMonday
High: 51 °F
Mostly Sunny
Monday Night
Low: 34 °F
Mostly Clear
Tuesday
High: 51 °F
Sunny
Detailed Forecast
Today
Scattered showers and thunderstorms after 2pm. Partly sunny, with a high near 75. Northwest wind around 7 mph. Chance of precipitation is 30%.
Tonight
Scattered showers before 8pm. Mostly cloudy, with a low around 51. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 62. Northeast wind 5 to 8 mph.
Saturday Night
A 20 percent chance of showers after 2am. Cloudy, with a low around 47. Light southeast wind.
Sunday
Showers likely before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then showers after 2pm. High near 57. South wind 5 to 11 mph becoming northwest in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers, mainly before 8pm. Low around 38. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly sunny, with a high near 51.
Monday Night
Mostly clear, with a low around 34.
Tuesday
Sunny, with a high near 51.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
Partly sunny, with a high near 62.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Mostly sunny, with a high near 63.
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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)
2:22 am EDT Apr 17, 2026
11am EDT Apr 17, 2026-6pm EDT Apr 23, 2026
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