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Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds
31°F
-1°C
| Humidity | 76% |
| Wind Speed | W 6 mph |
| Barometer | 30.05 in (1017.6 mb) |
| Dewpoint | 24°F (-4°C) |
| Visibility | 10.00 mi |
| Wind Chill | 25°F (-4°C) |
| Last update | 3 Dec 11:56 pm EST |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Overnight
Low: 29 °F
Mostly Clear
Thursday
High: 43 °F
Increasing
CloudsThursday Night
Low: 18 °F
Mostly Clear
Friday
High: 35 °F
Mostly Sunny
then Slight
Chance Light
SnowFriday Night
Low: 28 °F
Chance Light
Snow then
Chance
Rain/SnowSaturday
High: 42 °F
Chance Rain
Saturday Night
Low: 30 °F
Partly Cloudy
Sunday
High: 44 °F
Mostly Sunny
Sunday Night
Low: 25 °F
Mostly Cloudy
Detailed Forecast
Overnight
Mostly clear, with a low around 29. Southwest wind 3 to 6 mph.
Thursday
Increasing clouds, with a high near 43. Wind chill values between 20 and 30. West wind 11 to 18 mph, with gusts as high as 32 mph.
Thursday Night
Mostly clear, with a low around 18. Wind chill values between 10 and 15. Northwest wind 7 to 17 mph, with gusts as high as 34 mph.
Friday
A 20 percent chance of light snow after 1pm. Increasing clouds, with a high near 35. Wind chill values between 10 and 20. North wind 5 to 9 mph becoming south in the afternoon.
Friday Night
A chance of snow before 4am, then a chance of rain. Cloudy, with a low around 28. South wind around 6 mph becoming light and variable in the evening. Chance of precipitation is 30%.
Saturday
A chance of rain or light rain before 7am, then a chance of rain between 7am and 1pm. Partly sunny, with a high near 42. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 30.
Sunday
Mostly sunny, with a high near 44.
Sunday Night
Mostly cloudy, with a low around 25.
Monday
Mostly sunny, with a high near 34.
Monday Night
Partly cloudy, with a low around 19.
Tuesday
Mostly sunny, with a high near 38.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
Wednesday
A 30 percent chance of rain. Mostly cloudy, 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)
10:39 pm EST Dec 3, 2025
12am EST Dec 4, 2025-6pm EST Dec 10, 2025
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