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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: 8:57 pm EST Jan 1, 2026 Latitude: 40.7298207 Longitude: -73.2103934 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
20% chance of snow on Tonight Mostly Sunny on Friday Increasing Clouds on Saturday Mostly Cloudy on Sunday Partly Sunny on Monday Mostly Cloudy on Tuesday 40% chance of rain on Wednesday Mostly Sunny on Thursday
Low: 19°F High: 31°F High: 31°F High: 33°F High: 35°F High: 41°F High: 46°F High: 43°F
Low: 20°F Low: 24°F Low: 20°F Low: 27°F Low: 33°F Low: 31°F  
Snow Mostly Sunny Increasing Clouds Mostly Cloudy Partly Sunny Mostly Cloudy Rain Mostly Sunny
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Current Conditions at
ISLIP - (KISP)
21°
Mostly Clear
as of 9:56 PM EST
Rel. Humidity: 41%
Dew Point: 1°F
Visibility: 10 Miles
Pressure: 29.87 in.
Flight Rule: VFR
Wind Data
3 MPH
260° West
Cloud Level(s): Few at 6000ft
Current Conditions at
FARMINGDALE - (KFRG)
19°
Clear
as of 9:53 PM EST
Rel. Humidity: 44%
Dew Point: 1°F
Visibility: 10 Miles
Pressure: 29.89 in.
Flight Rule: VFR
Wind Data
3 MPH
270° West
Cloud Level(s): Clear
Current Conditions at
SHIRLEY/BROOKHAVEN - (KHWV)
10°
Clear
as of 9:56 PM EST
Rel. Humidity: 60%
Dew Point: -0°F
Visibility: 10 Miles
Pressure: 29.89 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
NEW YORK-KENNEDY - (KJFK)
21°
Mostly Clear
as of 9:51 PM EST
Rel. Humidity: 44%
Dew Point: 3°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
8 MPH
290° West
Cloud Level(s): Few at 6000ft, Few at 10000ft
20% chance of snow Tonight Tonight... A chance of flurries after 1am. Mostly cloudy, with a low around 19. Wind chill values between 10 and 15. West wind around 8 mph.

Mostly Sunny on Friday Friday... Cloudy, then gradually becoming mostly sunny, with a high near 31. Wind chill values between 10 and 20. West wind 9 to 11 mph, with gusts as high as 22 mph.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 20. Wind chill values between 10 and 15. West wind around 9 mph.

Increasing Clouds on Saturday Saturday... Increasing clouds, with a high near 31. Wind chill values between 10 and 20. West wind 7 to 9 mph.

Cloudy on Saturday Night Saturday Night... Cloudy, with a low around 24. Light northwest wind.

Mostly Cloudy on Sunday Sunday... Mostly cloudy, then gradually becoming sunny, with a high near 33.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 20.

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

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 27.

Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 41.

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

40% chance of rain Wednesday Wednesday... A 40 percent chance of rain. Mostly cloudy, with a high near 46.

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

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 43.

Current Radar Image


Sun Almanac for Islip, New York
Sunrise: 07:17 AM
Sunset: 4:36 PM
Civil Sunrise:06:46 AM
Civil Sunset: 5:07 PM
Nautical Sunrise: 06:12 AM
Nautical Sunset: 5:41 PM
Astro Sunrise: 05:39 AM
Astro Sunset: 6:14 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.