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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: 8:17 pm EST Nov 18, 2025 Latitude: 40.7298207 Longitude: -73.2103934 View on Google Maps

MouseOver for Detail Forecast
Tonight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
60% chance of rain on Tonight 60% chance of rain on Wednesday Partly Sunny on Thursday Mostly Cloudy on Friday Partly Sunny on Saturday Mostly Sunny on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday
Low: 36°F High: 49°F High: 51°F High: 56°F High: 51°F High: 51°F High: 53°F High: 54°F
Low: 36°F Low: 43°F Low: 41°F Low: 36°F Low: 39°F Low: 41°F  
Rain Rain Partly Sunny Mostly Cloudy Partly Sunny Mostly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
ISLIP - (KISP)
37°
Mostly Cloudy
as of 8:56 PM EST
Rel. Humidity: 60%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.16 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 9000ft, Broken at 25000ft
Current Conditions at
FARMINGDALE - (KFRG)
39°
Mostly Clear
as of 8:53 PM EST
Rel. Humidity: 55%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.16 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 9000ft
Current Conditions at
SHIRLEY/BROOKHAVEN - (KHWV)
36°
Clear
as of 8:56 PM EST
Rel. Humidity: 59%
Dew Point: 23°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)
43°
Mostly Cloudy
as of 8:51 PM EST
Rel. Humidity: 48%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.17 in.
Flight Rule: VFR
Wind Data
5 MPH
080° East
Cloud Level(s): Few at 9000ft, Broken at 25000ft
60% chance of rain Tonight Tonight... Rain likely, mainly after 4am. Mostly cloudy, with a low around 36. Calm wind. Chance of precipitation is 60%.

60% chance of rain Wednesday Wednesday... Rain likely, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 49. Calm wind becoming north around 6 mph in the morning. Chance of precipitation is 60%.

Mostly Cloudy on Wednesday Night Wednesday Night... Patchy frost. Otherwise, mostly cloudy, with a low around 36. Light north wind.

Partly Sunny on Thursday Thursday... Partly sunny, with a high near 51. Northeast wind 5 to 7 mph.

20% chance of rain Thursday Night Thursday Night... A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 43. Light and variable wind.

Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 56.

30% chance of rain Friday Night Friday Night... A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 41.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 51.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 36.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 51.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 39.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 53.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 41.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 54.

Current Radar Image


Sun Almanac for Islip, New York
Sunrise: 06:44 AM
Sunset: 4:32 PM
Civil Sunrise:06:14 AM
Civil Sunset: 5:02 PM
Nautical Sunrise: 05:41 AM
Nautical Sunset: 5:35 PM
Astro Sunrise: 05:08 AM
Astro Sunset: 6:08 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.