Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Overcast
51°F
11°C
| Humidity | 74% |
| Wind Speed | SW 6 mph |
| Barometer | 29.97 in (1014.8 mb) |
| Dewpoint | 43°F (6°C) |
| Visibility | 10.00 mi |
| Wind Chill | 49°F (9°C) |
| Last update | 21 Nov 4:56 pm EST |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Tonight
Low: 42 °F
Mostly Cloudy
then Showers
LikelySaturday
High: 50 °F
Showers
Likely then
Chance RainSaturday Night
Low: 32 °F
Mostly Clear
then FrostSunday
High: 49 °F
Frost then
Mostly SunnySunday Night
Low: 38 °F
Partly Cloudy
Monday
High: 51 °F
Sunny
Monday Night
Low: 38 °F
Increasing
CloudsTuesday
High: 55 °F
Mostly Cloudy
then Chance
RainTuesday Night
Low: 46 °F
Rain Likely
Detailed Forecast
Tonight
Showers likely, mainly after 4am. Mostly cloudy, with a low around 42. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Showers likely before 10am, then a chance of rain between 10am and 1pm. Cloudy through mid morning, then gradual clearing, with a high near 50. Light north wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Widespread frost, mainly after 4am. Otherwise, partly cloudy, with a low around 32. North wind 3 to 6 mph.
Sunday
Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 49. Light and variable wind becoming southwest 5 to 10 mph in the morning.
Sunday Night
Partly cloudy, with a low around 38. West wind around 7 mph.
Monday
Sunny, with a high near 51.
Monday Night
Increasing clouds, with a low around 38.
Tuesday
A 30 percent chance of rain after 1pm. Cloudy, with a high near 55.
Tuesday Night
Rain likely. Cloudy, with a low around 46. Chance of precipitation is 70%.
Wednesday
A 50 percent chance of rain. Mostly cloudy, with a high near 58.
Wednesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 40.
Thanksgiving Day
Mostly sunny, with a high near 51.
Thursday Night
Partly cloudy, with a low around 33.
Friday
Mostly sunny, with a high near 45.
Additional Forecasts and Information
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Forecast AreaABOUT 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)
3:11 pm EST Nov 21, 2025
5pm EST Nov 21, 2025-6pm EST Nov 28, 2025
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