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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: 9:17 am EST Dec 24, 2025 Latitude: 40.7298207 Longitude: -73.2103934 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Christmas Day Friday Saturday Sunday Monday Tuesday
Sunny on This Afternoon Increasing Clouds on Tonight 20% chance of rain on Christmas Day 30% chance of snow on Friday 60% chance of snow on Saturday 60% chance of rain on Sunday 40% chance of rain on Monday Partly Sunny on Tuesday
High: 45°F Low: 28°F High: 43°F High: 31°F High: 35°F High: 44°F High: 39°F High: 31°F
Low: 21°F Low: 23°F Low: 27°F Low: 28°F Low: 20°F  
Sunny Increasing Clouds Rain Snow Snow Rain Rain Partly Sunny
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Current Conditions at
ISLIP - (KISP)
48°
Feels like 40°F
Partly Cloudy
as of 11:56 AM EST
Rel. Humidity: 39%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.04 in.
Flight Rule: VFR
Wind Data
22 MPH
Gust: 43 MPH
330° Northwest
Cloud Level(s): Scattered at 5500ft
Current Conditions at
FARMINGDALE - (KFRG)
45°
Feels like 36°F
Clear
as of 11:53 AM EST
Rel. Humidity: 45%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.06 in.
Flight Rule: VFR
Wind Data
22 MPH
Gust: 38 MPH
330° Northwest
Cloud Level(s): Clear
Current Conditions at
SHIRLEY/BROOKHAVEN - (KHWV)
45°
Feels like 35°F
Mostly Cloudy
as of 11:56 AM EST
Rel. Humidity: 45%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
24 MPH
Gust: 38 MPH
340° North
Cloud Level(s): Broken at 5500ft
Current Conditions at
NEW YORK-KENNEDY - (KJFK)
46°
Feels like 38°F
Mostly Clear
as of 11:51 AM EST
Rel. Humidity: 42%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.10 in.
Flight Rule: VFR
Wind Data
22 MPH
Gust: 33 MPH
330° Northwest
Cloud Level(s): Few at 5000ft, Few at 25000ft
Sunny on This Afternoon This Afternoon... Sunny, with a high near 45. Northwest wind 13 to 16 mph, with gusts as high as 31 mph.

Increasing Clouds on Tonight Tonight... Increasing clouds, with a low around 28. North wind around 6 mph becoming calm in the evening.

20% chance of rain Christmas Day Christmas Day... A 20 percent chance of rain before 1pm. Mostly cloudy, with a high near 43. Southwest wind 6 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 21. Wind chill values between 10 and 15. North wind around 11 mph, with gusts as high as 22 mph.

30% chance of snow Friday Friday... A 30 percent chance of snow after 1pm. Mostly cloudy, with a high near 31. North wind 6 to 10 mph.

90% chance of snow Friday Night Friday Night... Snow. Low around 23. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

60% chance of snow Saturday Saturday... Snow likely before 1pm. Cloudy, with a high near 35. Chance of precipitation is 60%.

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

60% chance of rain Sunday Sunday... Rain likely, mainly after 1pm. Cloudy, with a high near 44. Chance of precipitation is 60%.

80% chance of rain Sunday Night Sunday Night... Rain, mainly before 1am. Low around 28. Chance of precipitation is 80%.

40% chance of rain Monday Monday... A 40 percent chance of rain. Partly sunny, with a high near 39.

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

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 31.

Current Radar Image


Sun Almanac for Islip, New York
Sunrise: 07:15 AM
Sunset: 4:30 PM
Civil Sunrise:06:44 AM
Civil Sunset: 5:01 PM
Nautical Sunrise: 06:10 AM
Nautical Sunset: 5:36 PM
Astro Sunrise: 05:36 AM
Astro Sunset: 6:09 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.