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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: 1:33 am EST Dec 16, 2025 Latitude: 40.7298207 Longitude: -73.2103934 View on Google Maps

MouseOver for Detail Forecast
Overnight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
Mostly Cloudy on Overnight Sunny on Tuesday Mostly Sunny on Wednesday Mostly Sunny on Thursday 80% chance of rain on Friday Partly Sunny on Saturday Partly Sunny on Sunday Partly Sunny on Monday
Low: 24°F High: 34°F High: 46°F High: 53°F High: 52°F High: 42°F High: 46°F High: 39°F
Low: 25°F Low: 32°F Low: 46°F Low: 26°F Low: 33°F Low: 29°F  
Mostly Cloudy Sunny Mostly Sunny Mostly Sunny Rain Partly Sunny Partly Sunny Partly Sunny
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Current Conditions at
ISLIP - (KISP)
27°
Feels like 17°F
Cloudy
as of 1:56 AM EST
Rel. Humidity: 63%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.18 in.
Flight Rule: VFR
Wind Data
9 MPH
250° West
Cloud Level(s): Solid Overcast at 8000ft
Current Conditions at
FARMINGDALE - (KFRG)
25°
Feels like 13°F
Cloudy
as of 1:53 AM EST
Rel. Humidity: 68%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.19 in.
Flight Rule: VFR
Wind Data
12 MPH
250° West
Cloud Level(s): Solid Overcast at 8500ft
Current Conditions at
SHIRLEY/BROOKHAVEN - (KHWV)
25°
Cloudy
as of 1:56 AM EST
Rel. Humidity: 68%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.19 in.
Flight Rule: VFR
Wind Data
6 MPH
260° West
Cloud Level(s): Solid Overcast at 8000ft
Current Conditions at
NEW YORK-KENNEDY - (KJFK)
25°
Feels like 12°F
Mostly Cloudy
as of 1:51 AM EST
Rel. Humidity: 73%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.22 in.
Flight Rule: VFR
Wind Data
14 MPH
270° West
Cloud Level(s): Broken at 8500ft, Broken at 25000ft
Mostly Cloudy on Overnight Overnight... Mostly cloudy, with a steady temperature around 24. Wind chill values between 15 and 20. West wind around 7 mph.

Sunny on Tuesday Tuesday... Sunny, with a high near 34. Wind chill values between 10 and 20. West wind around 7 mph.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 25. Wind chill values between 15 and 20. Southwest wind 6 to 10 mph, with gusts as high as 22 mph.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 46. Wind chill values between 15 and 25 early. Southwest wind 11 to 16 mph, with gusts as high as 31 mph.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 32. West wind 8 to 13 mph becoming light after midnight. Winds could gust as high as 24 mph.

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

90% chance of rain Thursday Night Thursday Night... Showers, mainly after 1am. Low around 46. Breezy. Chance of precipitation is 90%.

80% chance of rain Friday Friday... Showers before 1pm. High near 52. Breezy. Chance of precipitation is 80%.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 26. Breezy.

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

Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 33.

Partly Sunny on Sunday Sunday... Partly sunny, with a high near 46.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 29.

Partly Sunny on Monday Monday... Partly sunny, with a high near 39.

Current Radar Image


Sun Almanac for Islip, New York
Sunrise: 07:11 AM
Sunset: 4:27 PM
Civil Sunrise:06:40 AM
Civil Sunset: 4:58 PM
Nautical Sunrise: 06:05 AM
Nautical Sunset: 5:32 PM
Astro Sunrise: 05:32 AM
Astro Sunset: 6:05 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.