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Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds
42°F
6°C
| Humidity | 41% |
| Wind Speed | NW 12 G 18 mph |
| Barometer | 30.40 in (1029.3 mb) |
| Dewpoint | 20°F (-7°C) |
| Visibility | 10.00 mi |
| Wind Chill | 35°F (2°C) |
| Last update | 29 Nov 9:56 am EST |
Extended Forecast for
Islip NY
Today

High: 43 °F
Sunny
Tonight

Low: 32 °F
Increasing
CloudsSunday
High: 53 °F
Chance Rain
then RainSunday Night

Low: 34 °F
Chance Rain
Monday

High: 42 °F
Sunny
Monday Night

Low: 29 °F
Increasing
CloudsTuesday
High: 48 °F
Chance Rain
then RainTuesday Night

Low: 31 °F
Rain Likely
Wednesday

High: 42 °F
Mostly Sunny
Detailed Forecast
Today
Sunny, with a high near 43. Northwest wind 7 to 11 mph.
Tonight
Increasing clouds, with a low around 32. Calm wind becoming south around 6 mph after midnight.
Sunday
Rain, mainly after 1pm. High near 53. South wind 9 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A 40 percent chance of rain before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 34. Southwest wind 11 to 15 mph, with gusts as high as 26 mph.
Monday
Sunny, with a high near 42. Northwest wind 10 to 14 mph.
Monday Night
Increasing clouds, with a low around 29.
Tuesday
Rain, mainly after 1pm. High near 48. Chance of precipitation is 90%.
Tuesday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 31. Chance of precipitation is 70%.
Wednesday
Mostly sunny, with a high near 42.
Wednesday Night
Partly cloudy, with a low around 30.
Thursday
Partly sunny, with a high near 42.
Thursday Night
Partly cloudy, with a low around 22.
Friday
Partly sunny, with a high near 39.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Islip NY
40.73°N 73.22°W (Elev. 7 ft)
40.73°N 73.22°W (Elev. 7 ft)
5:02 am EST Nov 29, 2025
10am EST Nov 29, 2025-6pm EST Dec 5, 2025


