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Islip, New York Weather Forecast
Islip, New York Weather
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Weather Forecast for Islip, New York : Suffolk County
Issued: 1:50 pm EST Dec 31, 2025 Latitude: 40.7298207 Longitude: -73.2103934 View on Google Maps

MouseOver for Detail Forecast
Tonight New Year's Day Friday Saturday Sunday Monday Tuesday Wednesday
80% chance of snow on Tonight 50% chance of snow on New Year's Day Mostly Sunny on Friday Increasing Clouds on Saturday Mostly Sunny on Sunday Partly Sunny on Monday Partly Sunny on Tuesday 30% chance of rain on Wednesday
Low: 32°F High: 25 °F High: 31°F High: 33°F High: 35°F High: 34°F High: 40°F High: 43°F
Low: 18°F Low: 22°F Low: 24°F Low: 20°F Low: 26°F Low: 30°F  
Snow Snow Mostly Sunny Increasing Clouds Mostly Sunny Partly Sunny Partly Sunny Rain
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Current Conditions at
ISLIP - (KISP)
30°
Feels like 21°F
Mostly Clear
as of 5:56 PM EST
Rel. Humidity: 46%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 29.78 in.
Flight Rule: VFR
Wind Data
10 MPH
250° West
Cloud Level(s): Few at 15000ft, Few at 25000ft
Current Conditions at
FARMINGDALE - (KFRG)
28°
Feels like 19°F
Clear
as of 5:53 PM EST
Rel. Humidity: 54%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 29.79 in.
Flight Rule: VFR
Wind Data
9 MPH
250° West
Cloud Level(s): Clear
Current Conditions at
SHIRLEY/BROOKHAVEN - (KHWV)
28°
Feels like 17°F
Clear
as of 5:56 PM EST
Rel. Humidity: 54%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 29.79 in.
Flight Rule: VFR
Wind Data
13 MPH
Gust: 20 MPH
270° West
Cloud Level(s): Clear
Current Conditions at
NEW YORK-KENNEDY - (KJFK)
28°
Feels like 16°F
Clear
as of 5:51 PM EST
Rel. Humidity: 58%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 29.81 in.
Flight Rule: VFR
Wind Data
16 MPH
240° Southwest
Cloud Level(s): Few at 3600ft, Few at 6000ft, Few at 15000ft, Scattered at 25000ft
80% chance of snow Tonight Tonight... Light snow, mainly between 10pm and 4am. Steady temperature around 32. Wind chill values between 20 and 25. West wind 8 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of less than a half inch possible.
50% chance of snow New Year's Day New Year's Day... A 50 percent chance of snow showers before 10am. Mostly sunny, with a temperature falling to around 25 by 5pm. Wind chill values between 15 and 25. Northwest wind 15 to 18 mph, with gusts as high as 33 mph.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 18. Wind chill values between 10 and 15. West wind 8 to 11 mph, with gusts as high as 22 mph.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 31. Wind chill values between 10 and 20. West wind 8 to 13 mph.
Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 22. West wind around 8 mph.
Increasing Clouds on Saturday Saturday... Increasing clouds, with a high near 33.
Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 24.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 35.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 20.
Partly Sunny on Monday Monday... Partly sunny, with a high near 34.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 26.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 40.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 30.
30% chance of rain Wednesday Wednesday... A 30 percent chance of rain. Mostly cloudy, with a high near 43.
Current Radar Image


Sun Almanac for Islip, New York
Sunrise: 07:17 AM
Sunset: 4:35 PM
Civil Sunrise:06:46 AM
Civil Sunset: 5:06 PM
Nautical Sunrise: 06:12 AM
Nautical Sunset: 5:40 PM
Astro Sunrise: 05:38 AM
Astro Sunset: 6:14 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.