Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Light Snow Fog/Mist and Windy
30°F
-1°C
| Humidity | 88% |
| Wind Speed | NW 31 G 48 mph |
| Barometer | 29.55 in (1000.5 mb) |
| Dewpoint | 27°F (-3°C) |
| Visibility | 0.50 mi |
| Wind Chill | 15°F (-9°C) |
| Last update | 1 Jan 6:56 am EST |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Snow Squall Warning until January 1, 08:15am
NOW until 8:15am Thu
Snow Squall Warning
New Year's Day
High: 27 °F
Blustery.
Chance Snow
then Mostly
SunnyTonight

Low: 18 °F
Increasing
CloudsFriday

High: 32 °F
Partly Sunny
Friday Night

Low: 21 °F
Partly Cloudy
Saturday

High: 34 °F
Increasing
CloudsSaturday Night

Low: 23 °F
Cloudy
Sunday

High: 35 °F
Decreasing
CloudsSunday Night

Low: 19 °F
Mostly Clear
Detailed Forecast
New Year's Day
A 40 percent chance of snow before 8am. Mostly cloudy through mid morning, then becoming sunny, with a steady temperature around 27. Wind chill values between 10 and 15. Blustery, with a northwest wind 17 to 22 mph, with gusts as high as 36 mph.
Tonight
Increasing clouds, with a low around 18. Wind chill values between 10 and 15. West wind 10 to 14 mph, with gusts as high as 24 mph.
Friday
Partly sunny, with a high near 32. Wind chill values between 10 and 20. West wind 10 to 15 mph.
Friday Night
Partly cloudy, with a low around 21. Wind chill values between 10 and 15. West wind around 9 mph.
Saturday
Increasing clouds, with a high near 34. West wind 8 to 10 mph.
Saturday Night
Cloudy, with a low around 23.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 35.
Sunday Night
Mostly clear, with a low around 19.
Monday
Partly sunny, with a high near 32.
Monday Night
Mostly cloudy, with a low around 24.
Tuesday
Mostly cloudy, with a high near 41.
Tuesday Night
Mostly cloudy, with a low around 31.
Wednesday
A 30 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
40.81°N 73.11°W (Elev. 98 ft)
40.81°N 73.11°W (Elev. 98 ft)
12:54 am EST Jan 1, 2026
7am EST Jan 1, 2026-6pm EST Jan 7, 2026



