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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: 5:56 pm EST Dec 12, 2025 Latitude: 40.7298207 Longitude: -73.2103934 View on Google Maps

MouseOver for Detail Forecast
Tonight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
Mostly Clear on Tonight Mostly Cloudy on Saturday 70% chance of snow on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday Partly Sunny on Wednesday Partly Sunny on Thursday Mostly Sunny on Friday
Low: 28°F High: 42°F High: 33°F High: 31°F High: 35°F High: 44°F High: 51°F High: 45°F
Low: 26°F Low: 17°F Low: 22°F Low: 26°F Low: 33°F Low: 35°F  
Mostly Clear Mostly Cloudy Snow Mostly Sunny Mostly Sunny Partly Sunny Partly Sunny Mostly Sunny
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Current Conditions at
ISLIP - (KISP)
32°
Clear
as of 7:56 PM EST
Rel. Humidity: 46%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 30.10 in.
Flight Rule: VFR
Wind Data
8 MPH
270° West
Cloud Level(s): Clear
Current Conditions at
FARMINGDALE - (KFRG)
30°
Clear
as of 7:53 PM EST
Rel. Humidity: 50%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
7 MPH
270° West
Cloud Level(s): Clear
Current Conditions at
SHIRLEY/BROOKHAVEN - (KHWV)
30°
Feels like 21°F
Clear
as of 7:56 PM EST
Rel. Humidity: 50%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 30.10 in.
Flight Rule: VFR
Wind Data
9 MPH
280° West
Cloud Level(s): Clear
Current Conditions at
NEW YORK-KENNEDY - (KJFK)
30°
Feels like 21°F
Mostly Clear
as of 7:51 PM EST
Rel. Humidity: 50%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
10 MPH
280° West
Cloud Level(s): Few at 25000ft
Mostly Clear on Tonight Tonight... Mostly clear, with a steady temperature around 28. Wind chill values between 20 and 25. West wind 5 to 8 mph.
Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 42. Wind chill values between 20 and 30. Southwest wind 6 to 14 mph.
90% chance of rain & snow Saturday Night Saturday Night... Snow, possibly mixed with rain, becoming all snow after 4am. Low around 26. West wind around 6 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
70% chance of snow Sunday Sunday... Snow likely, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 33. Wind chill values between 15 and 25. Northwest wind 6 to 14 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 17. Northwest wind around 14 mph, with gusts as high as 28 mph.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 31.
Partly Cloudy on Monday Night Monday Night... Cloudy, then gradually becoming partly cloudy, with a low around 22.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 35.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 26.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 44.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 33.
Partly Sunny on Thursday Thursday... Partly sunny, with a high near 51.
50% chance of rain Thursday Night Thursday Night... A 50 percent chance of rain. Mostly cloudy, with a low around 35.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 45.
Current Radar Image


Sun Almanac for Islip, New York
Sunrise: 07:08 AM
Sunset: 4:26 PM
Civil Sunrise:06:37 AM
Civil Sunset: 4:56 PM
Nautical Sunrise: 06:03 AM
Nautical Sunset: 5:31 PM
Astro Sunrise: 05:29 AM
Astro Sunset: 6:04 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.