Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fair

73°F

23°C

Humidity 51%
Wind Speed SW 9 mph
Barometer 30.02 in (1016.4 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 22 Aug 7:56 pm EDT
Extended Forecast for

East Setauket NY

  • Tonight

    Tonight: Clear, with a low around 67. Southwest wind 5 to 7 mph.

    Low: 67 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 82. South wind 6 to 10 mph.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 68. South wind 10 to 13 mph.

    Low: 68 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 82. South wind 8 to 11 mph.

    High: 82 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers, then a chance of showers and thunderstorms after 2am.  Mostly cloudy, with a low around 69. South wind 7 to 10 mph.  Chance of precipitation is 40%.

    Low: 69 °F

    Chance
    Showers

  • Monday

    Monday: A 50 percent chance of showers.  Partly sunny, with a high near 82.

    High: 82 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 67. Southwest wind 5 to 7 mph.
Saturday
Sunny, with a high near 82. South wind 6 to 10 mph.
Saturday Night
Mostly clear, with a low around 68. South wind 10 to 13 mph.
Sunday
Mostly sunny, with a high near 82. South wind 8 to 11 mph.
Sunday Night
A slight chance of showers, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 69. South wind 7 to 10 mph. Chance of precipitation is 40%.
Monday
A 50 percent chance of showers. Partly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 61.
Thursday
Sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
East Setauket NY
 40.94°N 73.14°W (Elev. 0 ft)
2:06 pm EDT Aug 22, 2025
8pm EDT Aug 22, 2025-6pm EDT Aug 29, 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