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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: 12:47 am EST Jan 3, 2026 Latitude: 40.7298207 Longitude: -73.2103934 View on Google Maps

MouseOver for Detail Forecast
Overnight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
Mostly Clear on Overnight Increasing Clouds on Saturday 30% chance of snow on Sunday Increasing Clouds on Monday Mostly Cloudy on Tuesday Partly Sunny on Wednesday Mostly Sunny on Thursday 30% chance of rain on Friday
Low: 19°F High: 30°F High: 34°F High: 35°F High: 42°F High: 46°F High: 45°F High: 49°F
Low: 27°F Low: 18°F Low: 26°F Low: 34°F Low: 33°F Low: 36°F  
Mostly Clear Increasing Clouds Snow Increasing Clouds Mostly Cloudy Partly Sunny Mostly Sunny Rain
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Current Conditions at
FARMINGDALE - (KFRG)
25°
Clear
as of 12:53 AM EST
Rel. Humidity: 53%
Dew Point: 10°F
Visibility: 10 Miles
Pressure: 29.88 in.
Flight Rule: VFR
Wind Data
6 MPH
300° Northwest
Cloud Level(s): Clear
Current Conditions at
SHIRLEY/BROOKHAVEN - (KHWV)
21°
Clear
as of 12:56 AM EST
Rel. Humidity: 57%
Dew Point: 9°F
Visibility: 10 Miles
Pressure: 29.87 in.
Flight Rule: VFR
Wind Data
6 MPH
290° West
Cloud Level(s): Clear
Current Conditions at
NEW YORK-KENNEDY - (KJFK)
27°
Feels like 15°F
Mostly Clear
as of 12:51 AM EST
Rel. Humidity: 35%
Dew Point: 3°F
Visibility: 10 Miles
Pressure: 29.89 in.
Flight Rule: VFR
Wind Data
14 MPH
310° Northwest
Cloud Level(s): Few at 5000ft
Mostly Clear on Overnight Overnight... Mostly clear, with a low around 19. Wind chill values between 10 and 15. Northwest wind around 7 mph.
Increasing Clouds on Saturday Saturday... Increasing clouds, with a high near 30. Wind chill values between 10 and 20. West wind 6 to 9 mph.
60% chance of snow Saturday Night Saturday Night... Light snow likely, mainly between 1am and 4am. Cloudy, with a steady temperature around 27. Calm wind. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
30% chance of snow Sunday Sunday... A 30 percent chance of light snow before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 34. Wind chill values between 20 and 25. Light northwest wind increasing to 5 to 9 mph in the morning.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 18. Northwest wind 6 to 8 mph.
Increasing Clouds on Monday Monday... Increasing clouds, with a high near 35.
Cloudy on Monday Night Monday Night... Cloudy, with a low around 26.
Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 42.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 34.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 46.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 33.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 45.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 36.
30% chance of rain Friday Friday... A 30 percent chance of rain. Mostly cloudy, with a high near 49.
Current Radar Image


Sun Almanac for Islip, New York
Sunrise: 07:17 AM
Sunset: 4:38 PM
Civil Sunrise:06:46 AM
Civil Sunset: 5:09 PM
Nautical Sunrise: 06:12 AM
Nautical Sunset: 5:43 PM
Astro Sunrise: 05:39 AM
Astro Sunset: 6:16 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.