Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Partly Cloudy
21°F
-6°C
| Humidity | 85% |
| Wind Speed | NW 5 mph |
| Barometer | 30.20 in (1022.9 mb) |
| Dewpoint | 17°F (-8°C) |
| Visibility | 10.00 mi |
| Wind Chill | 14°F (-10°C) |
| Last update | 28 Dec 5:56 am EST |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Today
High: 38 °F
Mostly Sunny
then Slight
Chance RainTonight
Low: 33 °F⇑
Rain
Monday
High: 51 °F
Rain
Monday Night
Low: 25 °F
Mostly Clear
Tuesday
High: 33 °F
Partly Sunny
and Breezy
then Mostly
CloudyTuesday Night
Low: 24 °F
Mostly Cloudy
Wednesday
High: 36 °F
Partly Sunny
Wednesday Night
Low: 24 °F
Mostly Cloudy
New Year's Day
High: 33 °F
Chance Snow
Detailed Forecast
Today
A 20 percent chance of rain after 4pm. Increasing clouds, with a high near 38. Wind chill values between 10 and 20. Northwest wind 5 to 8 mph becoming southwest in the afternoon.
Tonight
Rain, mainly before 4am. Temperature rising to around 43 by 4am. Southwest wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain, mainly after 7am. High near 51. Southwest wind 10 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Mostly cloudy during the early evening, then becoming mostly clear, with a low around 25. Wind chill values between 15 and 20. West wind 15 to 17 mph, with gusts as high as 33 mph.
Tuesday
Mostly cloudy, with a high near 33. Breezy, with a west wind 16 to 20 mph, with gusts as high as 37 mph.
Tuesday Night
Mostly cloudy, with a low around 24.
Wednesday
Partly sunny, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 24.
New Year's Day
A 30 percent chance of snow. Partly sunny, with a high near 33.
Thursday Night
Mostly cloudy, with a low around 20.
Friday
Mostly sunny, with a high near 31.
Friday Night
Partly cloudy, with a low around 19.
Saturday
Mostly sunny, with a high near 37.
Additional Forecasts and Information
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Forecast AreaABOUT 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)
1:17 am EST Dec 28, 2025
6am EST Dec 28, 2025-6pm EST Jan 3, 2026
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