Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds and Breezy
27°F
-3°C
| Humidity | 53% |
| Wind Speed | NW 21 G 36 mph |
| Barometer | 29.70 in (1005.7 mb) |
| Dewpoint | 12°F (-11°C) |
| Visibility | 10.00 mi |
| Wind Chill | 13°F (-11°C) |
| Last update | 1 Jan 11:56 am EST |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
New Year's Day

High: 36 °F⇓
Sunny and
BreezyTonight

Low: 21 °F
Chance
FlurriesFriday

High: 31 °F
Decreasing
CloudsFriday Night

Low: 19 °F
Partly Cloudy
Saturday

High: 31 °F
Increasing
CloudsSaturday Night

Low: 23 °F
Cloudy
Sunday

High: 33 °F
Mostly Sunny
Sunday Night

Low: 19 °F
Partly Cloudy
Monday

High: 34 °F
Partly Sunny
Detailed Forecast
New Year's Day
Sunny, with a temperature falling to around 24 by 5pm. Wind chill values between 10 and 15. Breezy, with a northwest wind 16 to 23 mph, with gusts as high as 34 mph.
Tonight
A chance of flurries after 1am. Increasing clouds, with a steady temperature around 21. Wind chill values between 10 and 15. West wind 6 to 14 mph.
Friday
Cloudy, then gradually becoming mostly sunny, with a high near 31. Wind chill values between 10 and 20. West wind 8 to 11 mph.
Friday Night
Partly cloudy, with a low around 19. Wind chill values between 10 and 15. West wind around 7 mph.
Saturday
Increasing clouds, with a high near 31. West wind 7 to 9 mph.
Saturday Night
Cloudy, with a low around 23.
Sunday
Mostly sunny, with a high near 33.
Sunday Night
Partly cloudy, with a low around 19.
Monday
Partly sunny, with a high near 34.
Monday Night
Mostly cloudy, with a low around 26.
Tuesday
Mostly cloudy, with a high near 41.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
A 40 percent chance of rain. Mostly 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
40.78°N 73.09°W (Elev. 49 ft)
40.78°N 73.09°W (Elev. 49 ft)
12:21 pm EST Jan 1, 2026
12pm EST Jan 1, 2026-6pm EST Jan 7, 2026


