National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Light Snow Blowing Snow and Breezy

32°F

0°C

Humidity 75%
Wind Speed NW 23 mph
Barometer 29.48 in (998.4 mb)
Dewpoint 25°F (-4°C)
Visibility 4.00 mi
Wind Chill19°F (-7°C)
Last update 23 Feb 2:56 pm EST
Extended Forecast for

East Setauket NY

Blizzard Warning February 23, 03:46pm until February 23, 06:00pm
Click here for hazard details and duration
...
  •  
    Blizzard Warning February 23, 03:46pm until February 23, 06:00pm

    NOW until 6:00pm Mon

    Blizzard Warning

  • Tonight

    Low: 23 °F

    Patchy
    Blowing Snow
    and Windy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 30. Wind chill values between 10 and 20. West wind 13 to 15 mph.

    High: 30 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of snow showers between 1am and 4am, then a chance of snow after 4am. Increasing clouds, with a low around 22. Wind chill values between 15 and 20. West wind 6 to 11 mph becoming south after midnight. Chance of precipitation is 50%.

    Low: 22 °F

    Partly Cloudy
    then Chance
    Snow Showers

  • Wednesday

    Wednesday: Snow likely, mixing with rain after 10am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 39. Wind chill values between 20 and 30. Southwest wind around 16 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 31. West wind 11 to 14 mph.

    Low: 31 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of rain and snow after 1pm. Partly sunny, with a high near 37. Chance of precipitation is 50%.

    High: 37 °F

    Partly Sunny
    then Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Snow likely, mainly before 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 70%.

    Low: 29 °F

    Snow Likely

  • Friday

    Friday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

Detailed Forecast

Tonight
Patchy blowing snow. Cloudy, then gradually becoming partly cloudy, with a low around 23. Wind chill values between 10 and 15. Windy, with a northwest wind 24 to 29 mph decreasing to 18 to 23 mph after midnight.
Tuesday
Mostly sunny, with a high near 30. Wind chill values between 10 and 20. West wind 13 to 15 mph.
Tuesday Night
A chance of snow showers between 1am and 4am, then a chance of snow after 4am. Increasing clouds, with a low around 22. Wind chill values between 15 and 20. West wind 6 to 11 mph becoming south after midnight. Chance of precipitation is 50%.
Wednesday
Snow likely, mixing with rain after 10am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 39. Wind chill values between 20 and 30. Southwest wind around 16 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday Night
Partly cloudy, with a low around 31. West wind 11 to 14 mph.
Thursday
A chance of rain and snow after 1pm. Partly sunny, with a high near 37. Chance of precipitation is 50%.
Thursday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 70%.
Friday
Mostly sunny, with a high near 38.
Friday Night
Mostly clear, with a low around 29.
Saturday
Mostly sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Partly sunny, with a high near 39.
Sunday Night
Mostly cloudy, with a low around 23.
Monday
A 40 percent chance of snow. Mostly cloudy, with a high near 32.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
East Setauket NY
 40.94°N 73.14°W (Elev. 0 ft)
Last Update:
12:58 pm EST Feb 23, 2026
Forecast Valid:
3pm EST Feb 23, 2026-6pm EST Mar 2, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation