Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair
43°F
6°C
| Humidity | 56% |
| Wind Speed | N 10 mph |
| Barometer | 29.90 in (1012.6 mb) |
| Dewpoint | 28°F (-2°C) |
| Visibility | 10.00 mi |
| Wind Chill | 37°F (3°C) |
| Last update | 15 Nov 1:56 am EST |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Overnight
Low: 33 °F
Mostly Clear
Saturday
High: 56 °F
Sunny then
Slight Chance
ShowersSaturday Night
Low: 48 °F⇑
Showers
Sunday
High: 56 °F⇓
Gradual
Clearing and
BreezySunday Night
Low: 35 °F
Partly Cloudy
and BreezyMonday
High: 48 °F
Mostly Sunny
and BreezyMonday Night
Low: 35 °F
Mostly Clear
Tuesday
High: 49 °F
Mostly Sunny
Tuesday Night
Low: 36 °F
Mostly Cloudy
Detailed Forecast
Overnight
Mostly clear, with a low around 33. North wind around 7 mph.
Saturday
A 20 percent chance of showers after 4pm. Increasing clouds, with a high near 56. North wind 6 to 9 mph becoming southwest in the afternoon.
Saturday Night
Showers and possibly a thunderstorm before 4am, then a slight chance of showers. Temperature rising to around 55 by 1am. South wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Cloudy through mid morning, then gradual clearing, with a temperature rising to near 56 by 9am, then falling to around 48 during the remainder of the day. Breezy, with a west wind 15 to 22 mph, with gusts as high as 39 mph.
Sunday Night
Partly cloudy, with a low around 35. Breezy, with a west wind 17 to 20 mph, with gusts as high as 36 mph.
Monday
Mostly sunny, with a high near 48. Breezy.
Monday Night
Mostly clear, with a low around 35.
Tuesday
Mostly sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
Mostly sunny, with a high near 50.
Wednesday Night
Partly cloudy, with a low around 37.
Thursday
Partly sunny, with a high near 53.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 43.
Friday
A 40 percent chance of rain. Mostly cloudy, with a high near 59.
Additional Forecasts and Information
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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)
1:00 am EST Nov 15, 2025
2am EST Nov 15, 2025-6pm EST Nov 21, 2025
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