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Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
53°F
12°C
| Humidity | 69% |
| Wind Speed | N 15 G 28 mph |
| Barometer | 29.86 in (1011.0 mb) |
| Dewpoint | 43°F (6°C) |
| Visibility | 10.00 mi |
| Wind Chill | 48°F (9°C) |
| Last update | 27 Mar 8:56 am EDT |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Today
High: 54 °F⇓
Slight Chance
Showers then
Mostly CloudyTonight

Low: 29 °F
Mostly Cloudy
Saturday

High: 41 °F
Decreasing
CloudsSaturday Night

Low: 28 °F
Partly Cloudy
Sunday

High: 47 °F
Mostly Sunny
Sunday Night

Low: 39 °F
Mostly Cloudy
Monday

High: 56 °F
Partly Sunny
Monday Night

Low: 44 °F
Mostly Cloudy
Tuesday

High: 57 °F
Chance Rain
Detailed Forecast
Today
A 20 percent chance of showers before 11am. Mostly cloudy, with a temperature falling to around 47 by 4pm. North wind 13 to 15 mph.
Tonight
Mostly cloudy, with a low around 29. North wind 5 to 8 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 41. Wind chill values between 20 and 30. Northwest wind 13 to 15 mph.
Saturday Night
Partly cloudy, with a low around 28. Northwest wind 5 to 8 mph becoming calm after midnight.
Sunday
Mostly sunny, with a high near 47. South wind 6 to 16 mph, with gusts as high as 26 mph.
Sunday Night
Mostly cloudy, with a low around 39.
Monday
Partly sunny, with a high near 56.
Monday Night
Mostly cloudy, with a low around 44.
Tuesday
A 30 percent chance of rain. Partly sunny, with a high near 57.
Tuesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 45.
Wednesday
A 30 percent chance of rain. Partly sunny, with a high near 61.
Wednesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 46.
Thursday
A 30 percent chance of rain. Mostly cloudy, with a high near 58.
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)
7:52 am EDT Mar 27, 2026
9am EDT Mar 27, 2026-6pm EDT Apr 2, 2026


