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

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

38°F

3°C

Humidity 48%
Wind Speed W 13 G 24 mph
Barometer 29.70 in (1005.8 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 11 Nov 8:56 am EST
Extended Forecast for

East Setauket NY

  • Veterans Day

    Veterans Day: A slight chance of rain and snow showers between 10am and 4pm. Mostly cloudy, with a high near 44. Breezy, with a west wind 20 to 22 mph, with gusts as high as 41 mph. Chance of precipitation is 20%.

    High: 44 °F

    Slight Chance
    Rain/Snow and
    Breezy

  • Tonight

    Tonight: Increasing clouds, with a low around 35. Breezy, with a southwest wind 13 to 21 mph.

    Low: 35 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 50. Southwest wind 11 to 14 mph.

    High: 50 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41. West wind 11 to 13 mph.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 52. West wind 11 to 15 mph, with gusts as high as 25 mph.

    High: 52 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

Detailed Forecast

Veterans Day
A slight chance of rain and snow showers between 10am and 4pm. Mostly cloudy, with a high near 44. Breezy, with a west wind 20 to 22 mph, with gusts as high as 41 mph. Chance of precipitation is 20%.
Tonight
Increasing clouds, with a low around 35. Breezy, with a southwest wind 13 to 21 mph.
Wednesday
Partly sunny, with a high near 50. Southwest wind 11 to 14 mph.
Wednesday Night
Mostly cloudy, with a low around 41. West wind 11 to 13 mph.
Thursday
Mostly sunny, with a high near 52. West wind 11 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly clear, with a low around 39.
Friday
Mostly sunny, with a high near 50.
Friday Night
Mostly clear, with a low around 33.
Saturday
Sunny, with a high near 46.
Saturday Night
A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 36.
Sunday
A 40 percent chance of rain. Partly sunny, with a high near 54.
Sunday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 42.
Monday
A 30 percent chance of rain. Partly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
East Setauket NY
 40.94°N 73.11°W (Elev. 52 ft)
Last Update:
7:01 am EST Nov 11, 2025
Forecast Valid:
9am EST Nov 11, 2025-6pm EST Nov 17, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation