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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: 10:03 pm EST Nov 20, 2025 Latitude: 40.7298207 Longitude: -73.2103934 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thanksgiving Day
Increasing Clouds on Tonight Mostly Cloudy on Friday 40% chance of rain on Saturday Mostly Sunny on Sunday Sunny on Monday 30% chance of rain on Tuesday 40% chance of rain on Wednesday Mostly Sunny on Thanksgiving Day
Low: 36°F High: 54°F High: 51°F High: 48°F High: 53°F High: 56°F High: 59°F High: 52°F
Low: 42°F Low: 32°F Low: 39°F Low: 39°F Low: 48°F Low: 42°F  
Increasing Clouds Mostly Cloudy Rain Mostly Sunny Sunny Rain Rain Mostly Sunny
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Current Conditions at
ISLIP - (KISP)
32°
Clear
as of 9:56 PM EST
Rel. Humidity: 80%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 30.16 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
FARMINGDALE - (KFRG)
34°
Clear
as of 9:53 PM EST
Rel. Humidity: 74%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 30.17 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
SHIRLEY/BROOKHAVEN - (KHWV)
28°
Clear
as of 9:56 PM EST
Rel. Humidity: 86%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.17 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
NEW YORK-KENNEDY - (KJFK)
36°
Partly Cloudy
as of 9:51 PM EST
Rel. Humidity: 86%
Dew Point: 32°F
Visibility: 10 Miles
Pressure: 30.18 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 5000ft, Scattered at 25000ft
Increasing Clouds on Tonight Tonight... Areas of frost between 11pm and 4am. Otherwise, increasing clouds, with a steady temperature around 36. Calm wind.
Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 54. Light west wind becoming southwest 5 to 10 mph in the morning.
60% chance of rain Friday Night Friday Night... Rain likely, mainly after 1am. Patchy fog after 10pm. Otherwise, cloudy, with a low around 42. Southwest wind around 6 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
40% chance of rain Saturday Saturday... A 40 percent chance of rain before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 51. North wind 6 to 11 mph.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 32. North wind 6 to 8 mph.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 48.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 39.
Sunny on Monday Monday... Sunny, with a high near 53.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 39.
30% chance of rain Tuesday Tuesday... A 30 percent chance of rain after 1pm. Cloudy, with a high near 56.
80% chance of rain Tuesday Night Tuesday Night... Rain. Low around 48. Chance of precipitation is 80%.
40% chance of rain Wednesday Wednesday... A 40 percent chance of rain. Mostly cloudy, with a high near 59.
30% chance of rain Wednesday Night Wednesday Night... A 30 percent chance of rain. Mostly cloudy, with a low around 42.
Mostly Sunny on Thanksgiving Day Thanksgiving Day... Mostly sunny, with a high near 52.
Current Radar Image


Sun Almanac for Islip, New York
Sunrise: 06:46 AM
Sunset: 4:31 PM
Civil Sunrise:06:16 AM
Civil Sunset: 5:01 PM
Nautical Sunrise: 05:43 AM
Nautical Sunset: 5:34 PM
Astro Sunrise: 05:10 AM
Astro Sunset: 6:07 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.