Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

62°F

17°C

Humidity 52%
Wind Speed N 12 G 22 mph
Barometer 29.89 in (1012.2 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 15 Oct 5:56 pm EDT
Extended Forecast for

East Setauket NY

  • Tonight

    Tonight: Mostly clear, with a low around 45. North wind 14 to 16 mph.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 58. North wind 15 to 18 mph, with gusts as high as 30 mph.

    High: 58 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 45. North wind 15 to 17 mph.

    Low: 45 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 62. North wind 13 to 15 mph.

    High: 62 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 46. North wind 7 to 11 mph.

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers likely, mainly after 2am.  Mostly cloudy, with a low around 55. Chance of precipitation is 60%.

    Low: 55 °F

    Showers
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 45. North wind 14 to 16 mph.
Thursday
Sunny, with a high near 58. North wind 15 to 18 mph, with gusts as high as 30 mph.
Thursday Night
Clear, with a low around 45. North wind 15 to 17 mph.
Friday
Sunny, with a high near 62. North wind 13 to 15 mph.
Friday Night
Mostly clear, with a low around 46. North wind 7 to 11 mph.
Saturday
Sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 68.
Sunday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 55. Chance of precipitation is 60%.
Monday
Showers likely, mainly before 8am. Partly sunny, with a high near 67. Chance of precipitation is 60%.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 65.
Tuesday Night
Mostly cloudy, with a low around 51.
Wednesday
Partly sunny, with a high near 65.
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ABOUT THIS FORECAST

 
Point Forecast:
East Setauket NY
 40.94°N 73.11°W (Elev. 52 ft)
1:59 pm EDT Oct 15, 2025
6pm EDT Oct 15, 2025-6pm EDT Oct 22, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database