Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
30°F
-1°C
| Humidity | 72% |
| Wind Speed | N 3 mph |
| Barometer | 30.16 in (1021.4 mb) |
| Dewpoint | 22°F (-6°C) |
| Visibility | 10.00 mi |
| Last update | 27 Dec 5:56 pm EST |
Extended Forecast for
Islip NY
Tonight
Low: 21 °F
Partly Cloudy
Sunday
High: 44 °F
Mostly Sunny
then Slight
Chance RainSunday Night
Low: 37 °F⇑
Rain
Monday
High: 51 °F
Rain
Monday Night
Low: 25 °F
Slight Chance
Rain/Snow and
BreezyTuesday
High: 34 °F
Mostly Cloudy
and BreezyTuesday Night
Low: 25 °F
Mostly Cloudy
and Breezy
then Mostly
CloudyWednesday
High: 36 °F
Mostly Sunny
Wednesday Night
Low: 26 °F
Partly Cloudy
Detailed Forecast
Tonight
Partly cloudy, with a low around 21. North wind 3 to 5 mph.
Sunday
A 20 percent chance of rain after 4pm. Increasing clouds, with a high near 44. Wind chill values between 20 and 30. Light and variable wind becoming west 5 to 7 mph in the morning.
Sunday Night
Rain, mainly after 7pm. Temperature rising to around 43 by 2am. South wind 5 to 10 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. High near 51. Southwest wind 10 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
A slight chance of rain showers before 10pm, then a slight chance of snow showers between 10pm and 1am. Mostly cloudy, with a low around 25. Breezy, with a west wind around 21 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.
Tuesday
Mostly cloudy, with a high near 34. Breezy.
Tuesday Night
Mostly cloudy, with a low around 25. Breezy.
Wednesday
Mostly sunny, with a high near 36.
Wednesday Night
Partly cloudy, with a low around 26.
New Year's Day
A 30 percent chance of snow. Mostly cloudy, with a high near 36.
Thursday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 19.
Friday
Mostly sunny, with a high near 31.
Friday Night
Partly cloudy, with a low around 20.
Saturday
Mostly sunny, with a high near 35.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Islip NY
40.73°N 73.22°W (Elev. 7 ft)
40.73°N 73.22°W (Elev. 7 ft)
12:59 pm EST Dec 27, 2025
6pm EST Dec 27, 2025-6pm EST Jan 3, 2026
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