Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair
50°F
10°C
| Humidity | 89% |
| Wind Speed | Calm |
| Barometer | 30.09 in (1019.0 mb) |
| Dewpoint | 47°F (8°C) |
| Visibility | 8.00 mi |
| Last update | 4 Apr 2:56 am EDT |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Overnight

Low: 50 °F
Patchy Fog
Saturday
High: 62 °F
Patchy Fog
then Partly
SunnySaturday Night

Low: 41 °F
Chance Rain
Sunday
High: 58 °F
Rain Likely
then RainSunday Night
Low: 39 °F
Rain Likely
then Partly
CloudyMonday

High: 53 °F
Sunny
Monday Night

Low: 38 °F
Partly Cloudy
Tuesday

High: 50 °F
Mostly Sunny
Tuesday Night

Low: 30 °F
Mostly Clear
Detailed Forecast
Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 50. Southwest wind around 6 mph.
Saturday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 62. Light and variable wind becoming east 5 to 10 mph in the afternoon.
Saturday Night
A 40 percent chance of rain after 11pm. Cloudy, with a low around 41. East wind 6 to 10 mph, with gusts as high as 22 mph.
Sunday
Rain likely and possibly a thunderstorm, then rain after 2pm. High near 58. Southwest wind 10 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Rain likely before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 39. Northwest wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Sunny, with a high near 53.
Monday Night
Partly cloudy, with a low around 38.
Tuesday
Mostly sunny, with a high near 50.
Tuesday Night
Mostly clear, with a low around 30.
Wednesday
Sunny, with a high near 45.
Wednesday Night
Mostly clear, with a low around 35.
Thursday
Sunny, with a high near 53.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Mostly sunny, with a high near 58.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
40.78°N 73.09°W (Elev. 49 ft)
40.78°N 73.09°W (Elev. 49 ft)
2:33 am EDT Apr 4, 2026
3am EDT Apr 4, 2026-6pm EDT Apr 10, 2026


