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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: 3:12 pm EST Jan 25, 2026 Latitude: 40.7298207 Longitude: -73.2103934 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Monday Tuesday Wednesday Thursday Friday Saturday Sunday
100% chance of snow & sleet on This Afternoon 100% chance of freezing rain & snow on Tonight 30% chance of freezing rain & snow on Monday Mostly Sunny on Tuesday Mostly Sunny on Wednesday Partly Sunny on Thursday Mostly Sunny on Friday Mostly Sunny on Saturday Mostly Sunny on Sunday
High: 23°F Low: 31 °F High: 31°F High: 22°F High: 23°F High: 23°F High: 20°F High: 24°F High: 28°F
Low: 13°F Low: 10°F Low: 12°F Low: 8°F Low: 9°F Low: 11°F  
Snow & Sleet Freezing Rain & Snow Freezing Rain & Snow Mostly Sunny Mostly Sunny Partly Sunny Mostly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
FARMINGDALE - (KFRG)
21°
Feels like 7°F
Cloudy
Unknown Precip Freezing Fog
as of 3:53 PM EST
Rel. Humidity: 85%
Dew Point: 18°F
Visibility: 1/2 Miles
Pressure: 30.05 in.
Flight Rule: IFR
Wind Data
15 MPH
Gust: 24 MPH
030° Northeast
Current Conditions at
NEW YORK-KENNEDY - (KJFK)
18°
Feels like 2°F
Mostly Cloudy
Mist
as of 3:51 PM EST
Rel. Humidity: 92%
Dew Point: 16°F
Visibility: 1 Miles
Pressure: 30.04 in.
Flight Rule: IFR
Wind Data
16 MPH
0° North
100% chance of snow & sleet This Afternoon This Afternoon... Snow and sleet. The sleet could be heavy at times. Steady temperature around 23. Wind chill values between 5 and 10. Breezy, with an east wind around 21 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. Total daytime snow and sleet accumulation of 5 to 9 inches possible.

100% chance of freezing rain & snow Tonight Tonight... Freezing rain and sleet, possibly mixed with snow before 4am, then a chance of snow and freezing rain between 4am and 5am, then a chance of snow after 5am. The sleet could be heavy at times. Patchy blowing snow between 1am and 4am. Temperature rising to around 31 by 1am. Wind chill values between 10 and 20. Windy, with a northeast wind 24 to 29 mph decreasing to 14 to 19 mph after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 100%. New ice accumulation of around a 0.1 of an inch possible. New snow and sleet accumulation of less than one inch possible.

30% chance of freezing rain & snow Monday Monday... A chance of snow and freezing rain before 9am, then a chance of snow between 9am and 1pm. Mostly cloudy, with a high near 31. Wind chill values between 15 and 20. North wind 5 to 13 mph becoming west in the afternoon. Chance of precipitation is 30%.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 13. Wind chill values between zero and 10. Northwest wind 13 to 17 mph.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 22. West wind 9 to 14 mph.

Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 10.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 23.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 12.

Partly Sunny on Thursday Thursday... Partly sunny, with a high near 23.

Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 8.

Mostly Sunny on Friday Friday... Mostly sunny and cold, with a high near 20.

Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 9.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 24.

Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 11.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 28.

Current Radar Image


Sun Almanac for Islip, New York
Sunrise: 07:09 AM
Sunset: 5:02 PM
Civil Sunrise:06:39 AM
Civil Sunset: 5:31 PM
Nautical Sunrise: 06:06 AM
Nautical Sunset: 6:04 PM
Astro Sunrise: 05:34 AM
Astro Sunset: 6:37 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.