Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Overcast
38°F
3°C
| Humidity | 60% |
| Wind Speed | Calm |
| Barometer | 29.87 in (1011.5 mb) |
| Dewpoint | 25°F (-4°C) |
| Visibility | 10.00 mi |
| Last update | 26 Feb 5:56 pm EST |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Tonight
Low: 22 °F
Slight Chance
Snow Showers
then Mostly
ClearFriday

High: 38 °F
Sunny
Friday Night

Low: 30 °F
Mostly Clear
Saturday

High: 45 °F
Mostly Sunny
Saturday Night

Low: 29 °F
Partly Cloudy
Sunday

High: 37 °F
Partly Sunny
Sunday Night

Low: 17 °F
Partly Cloudy
Monday
High: 28 °F
Mostly Sunny
then Chance
SnowMonday Night

Low: 20 °F
Partly Cloudy
Detailed Forecast
Tonight
A 20 percent chance of snow showers before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 22. Calm wind.
Friday
Sunny, with a high near 38. Wind chill values between 20 and 30. Calm wind becoming south around 5 mph.
Friday Night
Mostly clear, with a low around 30. Calm wind.
Saturday
Mostly sunny, with a high near 45. Calm wind becoming southwest around 6 mph.
Saturday Night
Partly cloudy, with a low around 29. Light and variable wind.
Sunday
Partly sunny, with a high near 37.
Sunday Night
Partly cloudy, with a low around 17.
Monday
A 30 percent chance of snow after 1pm. Partly sunny, with a high near 28.
Monday Night
Partly cloudy, with a low around 20.
Tuesday
Partly sunny, with a high near 37.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 30.
Wednesday
A 40 percent chance of rain. Partly sunny, with a high near 44.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 30.
Thursday
A 30 percent chance of rain. Mostly cloudy, with a high near 45.
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)
12:59 pm EST Feb 26, 2026
6pm EST Feb 26, 2026-6pm EST Mar 5, 2026


