Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Partly Cloudy
43°F
6°C
| Humidity | 27% |
| Wind Speed | NW 16 G 26 mph |
| Barometer | 29.85 in (1010.8 mb) |
| Dewpoint | 11°F (-12°C) |
| Visibility | 10.00 mi |
| Wind Chill | 35°F (2°C) |
| Last update | 17 Mar 3:56 pm EDT |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
This Afternoon

High: 41 °F
Scattered
FlurriesTonight

Low: 24 °F
Scattered
FlurriesWednesday

High: 37 °F
Mostly Sunny
Wednesday Night

Low: 27 °F
Mostly Clear
Thursday

High: 43 °F
Mostly Sunny
Thursday Night

Low: 33 °F
Mostly Cloudy
Friday

High: 48 °F
Partly Sunny
Friday Night

Low: 36 °F
Mostly Cloudy
Saturday

High: 49 °F
Chance Rain
Detailed Forecast
This Afternoon
Scattered flurries after 5pm. Partly sunny, with a high near 41. West wind 15 to 17 mph, with gusts as high as 29 mph.
Tonight
Scattered flurries before 11pm. Partly cloudy, with a low around 24. Northwest wind 6 to 9 mph, with gusts as high as 22 mph.
Wednesday
Mostly sunny, with a high near 37. Wind chill values between 20 and 30. Northwest wind around 5 mph becoming calm in the afternoon.
Wednesday Night
Mostly clear, with a low around 27. Calm wind.
Thursday
Mostly sunny, with a high near 43. Calm wind becoming south 5 to 7 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 33.
Friday
Partly sunny, with a high near 48.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
A 30 percent chance of rain. Partly sunny, with a high near 49.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 37.
Sunday
Mostly cloudy, with a high near 51.
Sunday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 36.
Monday
Mostly sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 28.
Tuesday
Sunny, with a high near 43.
Additional Forecasts and Information
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ABOUT 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)
2:58 pm EDT Mar 17, 2026
4pm EDT Mar 17, 2026-6pm EDT Mar 24, 2026


