Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
24°F
-4°C
| Humidity | 42% |
| Wind Speed | W 6 mph |
| Barometer | 30.19 in (1022.4 mb) |
| Dewpoint | 4°F (-16°C) |
| Visibility | 10.00 mi |
| Wind Chill | 17°F (-8°C) |
| Last update | 9 Feb 8:56 pm EST |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Tonight

Low: 16 °F
Mostly Cloudy
Tuesday
High: 37 °F
Partly Sunny
then Slight
Chance
Rain/SnowTuesday Night

Low: 28 °F
Rain/Snow
LikelyWednesday

High: 38 °F
Mostly Sunny
Wednesday Night

Low: 23 °F
Partly Cloudy
Thursday

High: 34 °F
Mostly Sunny
Thursday Night

Low: 19 °F
Partly Cloudy
Friday

High: 33 °F
Mostly Sunny
Friday Night

Low: 20 °F
Mostly Clear
Detailed Forecast
Tonight
Mostly cloudy, with a low around 16. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
A slight chance of rain and snow after 4pm. Mostly cloudy, with a high near 37. Wind chill values between 20 and 30. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
Rain and snow likely before 4am, then a slight chance of snow. Cloudy, then gradually becoming partly cloudy, with a low around 28. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday
Mostly sunny, with a high near 38. Wind chill values between 25 and 30. West wind 6 to 13 mph, with gusts as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 23. Northwest wind around 9 mph, with gusts as high as 22 mph.
Thursday
Mostly sunny, with a high near 34.
Thursday Night
Partly cloudy, with a low around 19.
Friday
Mostly sunny, with a high near 33.
Friday Night
Mostly clear, with a low around 20.
Saturday
Sunny, with a high near 35.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 37. Chance of precipitation is 40%.
Sunday Night
Rain likely. Cloudy, with a low around 29. Chance of precipitation is 70%.
Washington's Birthday
Rain likely. Mostly cloudy, with a high near 40. Chance of precipitation is 60%.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
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)
7:33 pm EST Feb 9, 2026
9pm EST Feb 9, 2026-6pm EST Feb 16, 2026


