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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: 1:21 pm EST Dec 1, 2025 Latitude: 40.7298207 Longitude: -73.2103934 View on Google Maps

MouseOver for Detail Forecast
Tonight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
Increasing Clouds on Tonight 100% chance of rain on Tuesday Sunny on Wednesday Partly Sunny on Thursday Mostly Sunny on Friday 30% chance of rain on Saturday Partly Sunny on Sunday Mostly Sunny on Monday
Low: 30°F High: 47°F High: 41°F High: 42°F High: 39°F High: 43°F High: 43°F High: 35°F
Low: 29°F Low: 30°F Low: 20°F Low: 27°F Low: 31°F Low: 24°F  
Increasing Clouds Rain Sunny Partly Sunny Mostly Sunny Rain Partly Sunny Mostly Sunny
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Current Conditions at
ISLIP - (KISP)
45°
Feels like 39°F
Partly Cloudy
as of 2:56 PM EST
Rel. Humidity: 33%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.27 in.
Flight Rule: VFR
Wind Data
10 MPH
350° North
Cloud Level(s): Few at 5000ft, Scattered at 25000ft
Current Conditions at
FARMINGDALE - (KFRG)
43°
Clear
as of 2:53 PM EST
Rel. Humidity: 38%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.28 in.
Flight Rule: VFR
Wind Data
7 MPH
320° Northwest
Cloud Level(s): Clear
Current Conditions at
SHIRLEY/BROOKHAVEN - (KHWV)
41°
Feels like 34°F
Clear
as of 2:56 PM EST
Rel. Humidity: 41%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.28 in.
Flight Rule: VFR
Wind Data
10 MPH
320° Northwest
Cloud Level(s): Clear
Current Conditions at
NEW YORK-KENNEDY - (KJFK)
43°
Feels like 36°F
Mostly Cloudy
as of 2:51 PM EST
Rel. Humidity: 28%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.30 in.
Flight Rule: VFR
Wind Data
10 MPH
340° North
Cloud Level(s): Few at 6500ft, Broken at 25000ft
Increasing Clouds on Tonight Tonight... Increasing clouds, with a low around 30. Calm wind becoming southeast around 6 mph after midnight.

100% chance of rain Tuesday Tuesday... Rain. High near 47. South wind 9 to 15 mph becoming northeast in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

80% chance of rain Tuesday Night Tuesday Night... Rain, mainly before 10pm. Low around 29. Wind chill values between 20 and 25. Northwest wind 14 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Sunny on Wednesday Wednesday... Sunny, with a high near 41. Wind chill values between 20 and 30. Northwest wind 6 to 11 mph, with gusts as high as 26 mph.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 30. West wind 3 to 8 mph.

Partly Sunny on Thursday Thursday... Partly sunny, with a high near 42.

Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 20.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 39.

30% chance of snow Friday Night Friday Night... A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 27.

30% chance of rain Saturday Saturday... A 30 percent chance of rain before 1pm. Partly sunny, with a high near 43.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 31.

Partly Sunny on Sunday Sunday... Partly sunny, with a high near 43.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 24.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 35.

Current Radar Image


Sun Almanac for Islip, New York
Sunrise: 06:58 AM
Sunset: 4:26 PM
Civil Sunrise:06:28 AM
Civil Sunset: 4:56 PM
Nautical Sunrise: 05:54 AM
Nautical Sunset: 5:30 PM
Astro Sunrise: 05:21 AM
Astro Sunset: 6:03 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.