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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: 1:40 am EST Jan 11, 2026 Latitude: 40.7298207 Longitude: -73.2103934 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Monday Tuesday Wednesday Thursday Friday Saturday
40% chance of rain & snow on Today 30% chance of rain & snow on Tonight Sunny on Monday Sunny on Tuesday Cloudy on Wednesday 30% chance of rain on Thursday Partly Sunny on Friday Mostly Sunny on Saturday
High: 45 °F Low: 28°F High: 41°F High: 44°F High: 47°F High: 39°F High: 34°F High: 38°F
Low: 31°F Low: 40°F Low: 31°F Low: 22°F Low: 23°F  
Rain & Snow Rain & Snow Sunny Sunny Cloudy Rain Partly Sunny Mostly Sunny
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Current Conditions at
ISLIP - (KISP)
45°
Cloudy
Light Rain
as of 6:56 AM EST
Rel. Humidity: 93%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 29.80 in.
Flight Rule: VFR
Wind Data
5 MPH
260° West
Cloud Level(s): Few at 1000ft, Solid Overcast at 7500ft
Current Conditions at
SHIRLEY/BROOKHAVEN - (KHWV)
43°
Cloudy
as of 6:56 AM EST
Rel. Humidity: 93%
Dew Point: 41°F
Visibility: 9 Miles
Pressure: 29.81 in.
Flight Rule: VFR
Wind Data
6 MPH
270° West
Cloud Level(s): Solid Overcast at 7500ft
Current Conditions at
NEW YORK-KENNEDY - (KJFK)
43°
Cloudy
as of 6:51 AM EST
Rel. Humidity: 86%
Dew Point: 39°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: VFR
Wind Data
8 MPH
250° West
Cloud Level(s): Few at 1300ft, Few at 6000ft, Solid Overcast at 8000ft
40% chance of rain & snow Today Today... A chance of rain before 10am, then a chance of rain and snow showers after 4pm. Cloudy through mid morning, then gradual clearing, with a temperature rising to near 45 by noon, then falling to around 40 during the remainder of the day. West wind 7 to 15 mph. Chance of precipitation is 40%.

30% chance of rain & snow Tonight Tonight... A chance of rain and snow showers before 7pm. Mostly clear, with a low around 28. Wind chill values between 20 and 25. Breezy, with a west wind 17 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 30%.

Sunny on Monday Monday... Sunny, with a high near 41. Wind chill values between 20 and 30. West wind 11 to 15 mph, with gusts as high as 26 mph.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 31. West wind 8 to 11 mph.

Sunny on Tuesday Tuesday... Sunny, with a high near 44. Southwest wind 7 to 11 mph.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a steady temperature around 40.

Cloudy on Wednesday Wednesday... Cloudy, with a high near 47.

30% chance of rain Wednesday Night Wednesday Night... A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 31.

30% chance of rain Thursday Thursday... A 30 percent chance of rain. Partly sunny, with a high near 39.

30% chance of snow Thursday Night Thursday Night... A 30 percent chance of snow. Mostly cloudy, with a low around 22.

Partly Sunny on Friday Friday... Partly sunny, with a high near 34.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 23.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 38.

Current Radar Image


Sun Almanac for Islip, New York
Sunrise: 07:16 AM
Sunset: 4:46 PM
Civil Sunrise:06:46 AM
Civil Sunset: 5:16 PM
Nautical Sunrise: 06:12 AM
Nautical Sunset: 5:50 PM
Astro Sunrise: 05:39 AM
Astro Sunset: 6:23 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.