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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: 1:17 am EST Dec 28, 2025 Latitude: 40.7298207 Longitude: -73.2103934 View on Google Maps

MouseOver for Detail Forecast
Overnight Sunday Monday Tuesday Wednesday New Year's Day Friday Saturday
Mostly Clear on Overnight 20% chance of rain on Sunday 90% chance of rain on Monday Mostly Cloudy on Tuesday Mostly Sunny on Wednesday 30% chance of snow on New Year's Day Mostly Sunny on Friday Mostly Sunny on Saturday
Low: 21°F High: 40°F High: 51°F High: 34°F High: 37°F High: 34°F High: 32°F High: 37°F
Low: 44 °F Low: 25°F Low: 25°F Low: 25°F Low: 21°F Low: 20°F  
Mostly Clear Rain Rain Mostly Cloudy Mostly Sunny Snow Mostly Sunny Mostly Sunny
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Current Conditions at
FARMINGDALE - (KFRG)
23°
Clear
as of 12:53 AM EST
Rel. Humidity: 79%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.21 in.
Flight Rule: VFR
Wind Data
3 MPH
300° Northwest
Cloud Level(s): Clear
Current Conditions at
SHIRLEY/BROOKHAVEN - (KHWV)
14°
Partly Cloudy
as of 12:56 AM EST
Rel. Humidity: 92%
Dew Point: 12°F
Visibility: 7 Miles
Pressure: 30.20 in.
Flight Rule: VFR
Wind Data
Calm
Current Conditions at
NEW YORK-KENNEDY - (KJFK)
25°
Partly Cloudy
as of 12:51 AM EST
Rel. Humidity: 79%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.22 in.
Flight Rule: VFR
Wind Data
6 MPH
0° North
Cloud Level(s): Few at 4000ft, Scattered at 25000ft
Mostly Clear on Overnight Overnight... Mostly clear, with a low around 21. Northwest wind around 6 mph.

20% chance of rain Sunday Sunday... A 20 percent chance of rain after 4pm. Increasing clouds, with a high near 40. Wind chill values between 15 and 25. Northwest wind 5 to 7 mph becoming southwest in the afternoon.

90% chance of rain Sunday Night Sunday Night... Rain, mainly before 4am. Temperature rising to around 44 by 5am. South wind 7 to 14 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

90% chance of rain Monday Monday... Rain, mainly after 7am. High near 51. Southwest wind 13 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Mostly Clear on Monday Night Monday Night... Mostly cloudy during the early evening, then becoming mostly clear, with a low around 25. Breezy, with a west wind 17 to 20 mph, with gusts as high as 34 mph.

Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 34. Breezy.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 25.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 37.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 25.

30% chance of snow New Year's Day New Year's Day... A 30 percent chance of snow. Partly sunny, with a high near 34.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 21.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 32.

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

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 37.

Current Radar Image


Sun Almanac for Islip, New York
Sunrise: 07:16 AM
Sunset: 4:33 PM
Civil Sunrise:06:45 AM
Civil Sunset: 5:04 PM
Nautical Sunrise: 06:11 AM
Nautical Sunset: 5:38 PM
Astro Sunrise: 05:38 AM
Astro Sunset: 6:12 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.