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Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.N/A
| Humidity | NA |
| Wind Speed | NA |
| Barometer | NA |
| Dewpoint | N/A |
| Visibility | NA |
| Last update | *** Not a current observation *** |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Tonight
Low: 52 °F
Mostly Cloudy
then Slight
Chance
ShowersWednesday

High: 72 °F
Chance
ShowersWednesday Night

Low: 41 °F
Showers
Thursday

High: 47 °F
Chance Light
Rain and
Patchy FogThursday Night

Low: 40 °F
Slight Chance
Light Rain
and Areas FogFriday
High: 60 °F
Areas Fog
then Mostly
CloudyFriday Night

Low: 50 °F
Mostly Cloudy
Saturday

High: 64 °F
Mostly Sunny
Saturday Night
Low: 49 °F
Mostly Cloudy
then Chance
Showers
Detailed Forecast
Tonight
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 52. Southwest wind around 16 mph, with gusts as high as 26 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 72. Southwest wind around 14 mph. Chance of precipitation is 50%.
Wednesday Night
Showers and possibly a thunderstorm before midnight, then showers likely. Low around 41. Light north wind becoming east 6 to 11 mph in the evening. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
A 30 percent chance of light rain, mainly before noon. Patchy fog before noon. Otherwise, cloudy, with a high near 47. East wind 15 to 17 mph.
Thursday Night
A 20 percent chance of light rain after 8pm. Areas of fog after midnight. Otherwise, cloudy, with a low around 40. East wind 7 to 11 mph.
Friday
Areas of fog before noon. Otherwise, mostly cloudy, with a high near 60.
Friday Night
Mostly cloudy, with a low around 50.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 49.
Sunday
Showers likely, mainly after 8am. Mostly cloudy, with a high near 61. Chance of precipitation is 60%.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 41.
Monday
Mostly sunny, with a high near 53.
Monday Night
Mostly clear, with a low around 37.
Tuesday
Mostly sunny, with a high near 51.
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)
6:03 pm EDT Mar 31, 2026
8pm EDT Mar 31, 2026-6pm EDT Apr 7, 2026


