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Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair
34°F
1°C
| Humidity | 73% |
| Wind Speed | W 8 mph |
| Barometer | 29.99 in (1015.5 mb) |
| Dewpoint | 26°F (-3°C) |
| Visibility | 10.00 mi |
| Wind Chill | 27°F (-3°C) |
| Last update | 4 Dec 4:56 am EST |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Today
High: 42 °F
Partly Sunny
then
Decreasing
Clouds and
BreezyTonight
Low: 18 °F
Mostly Clear
and Blustery
then Mostly
ClearFriday
High: 36 °F
Mostly Sunny
then Slight
Chance Light
SnowFriday Night
Low: 29 °F
Chance Light
SnowSaturday
High: 43 °F
Chance Light
RainSaturday Night
Low: 30 °F
Partly Cloudy
Sunday
High: 44 °F
Partly Sunny
Sunday Night
Low: 24 °F
Mostly Cloudy
Monday
High: 34 °F
Mostly Sunny
Detailed Forecast
Today
Increasing clouds, with a high near 42. Wind chill values between 20 and 30. Breezy, with a west wind 8 to 13 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph.
Tonight
Mostly clear, with a low around 18. Wind chill values between 10 and 15. Blustery, with a north wind 17 to 22 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 32 mph.
Friday
A 20 percent chance of light snow after 4pm. Increasing clouds, with a high near 36. Wind chill values between 10 and 20. Light and variable wind becoming southeast 5 to 7 mph in the morning.
Friday Night
A 40 percent chance of light snow, mainly after 7pm. Mostly cloudy, with a low around 29. Light and variable wind.
Saturday
A 30 percent chance of light rain, mainly before 10am. Mostly cloudy, with a high near 43. Light and variable wind becoming west 5 to 10 mph in the morning.
Saturday Night
Partly cloudy, with a low around 30.
Sunday
Partly sunny, with a high near 44.
Sunday Night
Mostly cloudy, with a low around 24.
Monday
Mostly sunny, with a high near 34.
Monday Night
Partly cloudy, with a low around 20.
Tuesday
Partly sunny, with a high near 41.
Tuesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 30.
Wednesday
A 30 percent chance of rain. Partly sunny, with a high near 46.
Additional Forecasts and Information
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Forecast AreaABOUT 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)
2:27 am EST Dec 4, 2025
5am EST Dec 4, 2025-6pm EST Dec 10, 2025
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