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Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
49°F
9°C
| Humidity | 83% |
| Wind Speed | SW 8 mph |
| Barometer | 30.10 in (1019.2 mb) |
| Dewpoint | 44°F (7°C) |
| Visibility | 10.00 mi |
| Wind Chill | 46°F (8°C) |
| Last update | 30 Mar 11:56 pm EDT |
Extended Forecast for
Islip Terrace NY
Overnight

Low: 48 °F
Chance
ShowersTuesday

High: 62 °F
Chance
ShowersTuesday Night
Low: 50 °F
Partly Cloudy
then Slight
Chance
ShowersWednesday
High: 62 °F
Slight Chance
Showers then
Showers
LikelyWednesday Night

Low: 43 °F
Showers
LikelyThursday

High: 51 °F
Chance
ShowersThursday Night

Low: 42 °F
Chance
ShowersFriday

High: 59 °F
Mostly Cloudy
Friday Night

Low: 49 °F
Chance
Showers
Detailed Forecast
Overnight
A 50 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 48. Southwest wind around 7 mph, with gusts as high as 20 mph.
Tuesday
A 50 percent chance of showers before 2pm. Partly sunny, with a high near 62. Southwest wind 9 to 15 mph, with gusts as high as 26 mph.
Tuesday Night
A 20 percent chance of showers after 2am. Partly cloudy, with a low around 50. Southwest wind 11 to 14 mph, with gusts as high as 28 mph.
Wednesday
A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 62. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Cloudy, with a low around 43. Southwest wind around 6 mph becoming northeast in the evening. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A 30 percent chance of showers before 2pm. Cloudy, with a high near 51.
Thursday Night
A chance of showers between 8pm and 2am. Cloudy, with a low around 42. Chance of precipitation is 30%.
Friday
Mostly cloudy, with a high near 59.
Friday Night
A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 49.
Saturday
Mostly cloudy, with a high near 62.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 47.
Sunday
A 40 percent chance of showers. Mostly cloudy, with a high near 60.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 42.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 54.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Islip Terrace NY
40.75°N 73.18°W (Elev. 30 ft)
40.75°N 73.18°W (Elev. 30 ft)
5:53 pm EDT Mar 30, 2026
12am EDT Mar 31, 2026-6pm EDT Apr 6, 2026


