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Islip, New York Weather Forecast
Islip, New York Weather
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Click for Special Weather Statement for Islip, New York
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Weather Forecast for Islip, New York : Suffolk County
Issued: 4:39 am EST Dec 29, 2025 Latitude: 40.7298207 Longitude: -73.2103934 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Tuesday Wednesday New Year's Day Friday Saturday Sunday
90% chance of rain on Today Cloudy on Tonight Partly Sunny on Tuesday Partly Sunny on Wednesday Partly Sunny on New Year's Day Mostly Sunny on Friday Partly Sunny on Saturday Mostly Sunny on Sunday
High: 51 °F Low: 26°F High: 33°F High: 37°F High: 29°F High: 30°F High: 34°F High: 33°F
Low: 25°F Low: 21°F Low: 18°F Low: 21°F Low: 21°F  
Rain Cloudy Partly Sunny Partly Sunny Partly Sunny Mostly Sunny Partly Sunny Mostly Sunny
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Current Conditions at
FARMINGDALE - (KFRG)
43°
Feels like 37°F
Clear
Fog
as of 5:20 AM EST
Rel. Humidity: 100%
Dew Point: 43°F
Visibility: 1/2 Miles
Pressure: 29.55 in.
Flight Rule: IFR
Wind Data
9 MPH
180° South
Current Conditions at
SHIRLEY/BROOKHAVEN - (KHWV)
45°
Cloudy
Fog
as of 5:27 AM EST
Rel. Humidity: 100%
Dew Point: 45°F
Visibility: 1/2 Miles
Pressure: 29.56 in.
Flight Rule: IFR
Wind Data
8 MPH
200° South
Current Conditions at
NEW YORK-KENNEDY - (KJFK)
41°
Cloudy
Light Drizzle Fog
as of 4:51 AM EST
Rel. Humidity: 100%
Dew Point: 41°F
Visibility: 1/4 Miles
Pressure: 29.57 in.
Flight Rule: LIFR
Wind Data
7 MPH
180° South
Cloud Level(s): Solid Overcast at 300ft
90% chance of rain Today Today... Rain, mainly before 4pm. Areas of fog before 1pm. Temperature rising to near 51 by noon, then falling to around 41 during the remainder of the day. Breezy, with a southwest wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Cloudy on Tonight Tonight... Partly cloudy, with a low around 26. Wind chill values between 15 and 20. Breezy, with a west wind 20 to 24 mph, with gusts as high as 40 mph.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 33. Wind chill values between 15 and 20. Breezy, with a west wind 20 to 23 mph, with gusts as high as 39 mph.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 25. Wind chill values between 15 and 20. West wind 11 to 17 mph, with gusts as high as 31 mph.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 37. West wind 11 to 15 mph, with gusts as high as 26 mph.
30% chance of snow Wednesday Night Wednesday Night... A 30 percent chance of snow. Mostly cloudy, with a low around 21.
Partly Sunny on New Year's Day New Year's Day... Partly sunny, with a high near 29.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 18.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 30.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 21.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 34.
Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 21.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 33.
Current Radar Image


Sun Almanac for Islip, New York
Sunrise: 07:16 AM
Sunset: 4:34 PM
Civil Sunrise:06:46 AM
Civil Sunset: 5:05 PM
Nautical Sunrise: 06:11 AM
Nautical Sunset: 5:39 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.