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Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Overcast
36°F
2°C
| Humidity | 67% |
| Wind Speed | N 3 mph |
| Barometer | 30.18 in (1021.9 mb) |
| Dewpoint | 26°F (-3°C) |
| Visibility | 10.00 mi |
| Last update | 28 Mar 12:56 am EDT |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Overnight

Low: 30 °F
Scattered
Snow ShowersSaturday
High: 41 °F
Scattered
Snow Showers
then Mostly
SunnySaturday Night

Low: 27 °F
Partly Cloudy
Sunday

High: 46 °F
Mostly Sunny
Sunday Night

Low: 39 °F
Mostly Cloudy
Monday

High: 54 °F
Partly Sunny
Monday Night
Low: 44 °F
Mostly Cloudy
then Chance
RainTuesday

High: 60 °F
Chance Rain
Tuesday Night

Low: 49 °F
Chance Rain
Detailed Forecast
Overnight
Scattered snow showers, mainly after 4am. Mostly cloudy, with a low around 30. Calm wind becoming north 5 to 7 mph. Chance of precipitation is 30%.
Saturday
Scattered snow showers before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 41. Wind chill values between 20 and 30. Northwest wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 27. Northwest wind 5 to 7 mph becoming calm after midnight.
Sunday
Mostly sunny, with a high near 46. Light south wind increasing to 9 to 14 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 39. Southwest wind around 10 mph, with gusts as high as 23 mph.
Monday
Partly sunny, with a high near 54.
Monday Night
A 30 percent chance of rain after 2am. Mostly cloudy, with a low around 44.
Tuesday
A 30 percent chance of rain before 2pm. Partly sunny, with a high near 60.
Tuesday Night
A chance of rain between 8pm and 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 30%.
Wednesday
A 40 percent chance of rain after 2pm. Partly sunny, with a high near 63.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 40.
Thursday
A 40 percent chance of rain. Mostly cloudy, with a high near 51.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 36.
Friday
A 50 percent chance of rain. Cloudy, with a high near 46.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
40.8°N 73.09°W (Elev. 98 ft)
40.8°N 73.09°W (Elev. 98 ft)
7:14 pm EDT Mar 27, 2026
1am EDT Mar 28, 2026-6pm EDT Apr 3, 2026


