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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: 5:50 am EST Jan 13, 2026 Latitude: 40.7298207 Longitude: -73.2103934 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Wednesday Thursday Friday Saturday Sunday M.L.King Day
Mostly Sunny on Today 20% chance of rain on Tonight Cloudy on Wednesday 20% chance of rain & snow on Thursday Mostly Sunny on Friday Partly Sunny on Saturday Partly Sunny on Sunday Partly Sunny on M.L.King Day
High: 45°F Low: 42°F High: 47°F High: 29 °F High: 35°F High: 41°F High: 38°F High: 33°F
Low: 30°F Low: 17°F Low: 28°F Low: 27°F Low: 23°F  
Mostly Sunny Rain Cloudy Rain & Snow Mostly Sunny Partly Sunny Partly Sunny Partly Sunny
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Current Conditions at
ISLIP - (KISP)
39°
Feels like 32°F
Mostly Clear
as of 9:56 AM EST
Rel. Humidity: 48%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
10 MPH
280° West
Cloud Level(s): Few at 25000ft
Current Conditions at
FARMINGDALE - (KFRG)
39°
Feels like 33°F
Clear
as of 9:53 AM EST
Rel. Humidity: 48%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
9 MPH
260° West
Cloud Level(s): Clear
Current Conditions at
SHIRLEY/BROOKHAVEN - (KHWV)
39°
Feels like 31°F
Clear
as of 9:56 AM EST
Rel. Humidity: 48%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: VFR
Wind Data
14 MPH
Gust: 20 MPH
260° West
Cloud Level(s): Clear
Current Conditions at
NEW YORK-KENNEDY - (KJFK)
39°
Feels like 32°F
Partly Cloudy
as of 9:51 AM EST
Rel. Humidity: 55%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.11 in.
Flight Rule: VFR
Wind Data
10 MPH
240° Southwest
Cloud Level(s): Scattered at 25000ft
Mostly Sunny on Today Today... Mostly sunny, with a high near 45. South wind 8 to 11 mph, with gusts as high as 22 mph.

20% chance of rain Tonight Tonight... A 20 percent chance of showers after 1am. Mostly cloudy, with a steady temperature around 42. Southwest wind around 10 mph, with gusts as high as 23 mph.

Cloudy on Wednesday Wednesday... Cloudy, with a high near 47. Southwest wind 6 to 9 mph.

50% chance of rain Wednesday Night Wednesday Night... A 50 percent chance of rain. Cloudy, with a low around 30. Calm wind becoming west around 6 mph after midnight.

20% chance of rain & snow Thursday Thursday... A slight chance of rain and snow before 10am, then a slight chance of snow between 10am and 1pm. Partly sunny, with a temperature falling to around 29 by 5pm. West wind 8 to 14 mph. Chance of precipitation is 20%.

Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 17.

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

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 28.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 41.

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

Partly Sunny on Sunday Sunday... Partly sunny, with a high near 38.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 23.

Partly Sunny on M.L.King Day M.L.King Day... Partly sunny, with a high near 33.

Current Radar Image


Sun Almanac for Islip, New York
Sunrise: 07:15 AM
Sunset: 4:48 PM
Civil Sunrise:06:45 AM
Civil Sunset: 5:18 PM
Nautical Sunrise: 06:11 AM
Nautical Sunset: 5:52 PM
Astro Sunrise: 05:38 AM
Astro Sunset: 6:25 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.