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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: 1:01 am EST Jan 22, 2026 Latitude: 40.7298207 Longitude: -73.2103934 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Friday Saturday Sunday Monday Tuesday Wednesday
Partly Sunny on This Afternoon Cloudy on Tonight Mostly Sunny on Friday Partly Sunny on Saturday 90% chance of snow on Sunday 40% chance of snow on Monday Mostly Sunny on Tuesday Partly Sunny on Wednesday
High: 40 °F Low: 27°F High: 36°F High: 19°F High: 25°F High: 28°F High: 25°F High: 28°F
Low: 10°F Low: 15°F Low: 19°F Low: 11°F Low: 14°F  
Partly Sunny Cloudy Mostly Sunny Partly Sunny Snow Snow Mostly Sunny Partly Sunny
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Current Conditions at
ISLIP - (KISP)
46°
Feels like 38°F
Mostly Cloudy
as of 11:56 AM EST
Rel. Humidity: 36%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
20 MPH
Gust: 31 MPH
270° West
Cloud Level(s): Few at 5000ft, Broken at 25000ft
Current Conditions at
FARMINGDALE - (KFRG)
Clear
as of 11:53 AM EST
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: VFR
Wind Data
22 MPH
Gust: 30 MPH
270° West
Cloud Level(s): Clear
Current Conditions at
SHIRLEY/BROOKHAVEN - (KHWV)
46°
Feels like 39°F
Clear
as of 11:56 AM EST
Rel. Humidity: 42%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: VFR
Wind Data
17 MPH
Gust: 32 MPH
280° West
Cloud Level(s): Clear
Current Conditions at
NEW YORK-KENNEDY - (KJFK)
46°
Feels like 38°F
Mostly Cloudy
as of 11:51 AM EST
Rel. Humidity: 39%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 30.01 in.
Flight Rule: VFR
Wind Data
21 MPH
Gust: 32 MPH
270° West
Cloud Level(s): Few at 5000ft, Few at 17000ft, Broken at 25000ft
Partly Sunny on This Afternoon This Afternoon... Partly sunny, with a temperature falling to around 40 by 5pm. West wind 11 to 14 mph, with gusts as high as 25 mph.

Cloudy on Tonight Tonight... Partly cloudy, with a low around 27. West wind around 9 mph, with gusts as high as 20 mph.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 36. Wind chill values between 20 and 25. West wind 7 to 15 mph, with gusts as high as 28 mph.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 10. Wind chill values between -5 and 5. Northwest wind 10 to 14 mph, with gusts as high as 28 mph.

Partly Sunny on Saturday Saturday... Partly sunny and cold, with a high near 19. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.

60% chance of snow Saturday Night Saturday Night... Snow likely after 1am. Mostly cloudy, with a steady temperature around 15. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

90% chance of snow Sunday Sunday... Snow. High near 25. Chance of precipitation is 90%.

80% chance of snow Sunday Night Sunday Night... Snow. Low around 19. Chance of precipitation is 80%.

40% chance of snow Monday Monday... A 40 percent chance of snow. Mostly cloudy, with a high near 28.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 11.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 25.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 14.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 28.

Current Radar Image


Sun Almanac for Islip, New York
Sunrise: 07:11 AM
Sunset: 4:58 PM
Civil Sunrise:06:41 AM
Civil Sunset: 5:28 PM
Nautical Sunrise: 06:08 AM
Nautical Sunset: 6:01 PM
Astro Sunrise: 05:35 AM
Astro Sunset: 6:34 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.