Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds

60°F

16°C

Humidity 41%
Wind Speed W 10 G 20 mph
Barometer 29.92 in (1013.0 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 11 Nov 11:56 am EST
Extended Forecast for

Sayville NY

  • Veterans Day

    Veterans Day: Mostly sunny, with a high near 60. Southwest wind around 7 mph.

    High: 60 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 49. Light and variable wind becoming east 5 to 9 mph in the evening.

    Low: 49 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A chance of rain and thunderstorms before 1pm, then rain likely and possibly a thunderstorm between 1pm and 4pm, then rain likely after 4pm.  Mostly cloudy, with a high near 60. East wind 11 to 15 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 60 °F

    Rain Likely

  • Thursday Night

    Thursday Night: Rain.  Low around 44. North wind 11 to 15 mph.  Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 44 °F

    Rain

  • Friday

    Friday: Rain.  High near 50. North wind around 17 mph.  Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 50 °F

    Rain

  • Friday Night

    Friday Night: A 40 percent chance of rain.  Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

Detailed Forecast

Veterans Day
Mostly sunny, with a high near 60. Southwest wind around 7 mph.
Tonight
Increasing clouds, with a low around 49. Light and variable wind becoming east 5 to 9 mph in the evening.
Thursday
A chance of rain and thunderstorms before 1pm, then rain likely and possibly a thunderstorm between 1pm and 4pm, then rain likely after 4pm. Mostly cloudy, with a high near 60. East wind 11 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Rain. Low around 44. North wind 11 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 50. North wind around 17 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 39.
Saturday
Partly sunny, with a high near 48.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 51.
Sunday Night
Partly cloudy, with a low around 37.
Monday
Sunny, with a high near 51.
Monday Night
Mostly clear, with a low around 35.
Tuesday
Sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
Sayville NY
 40.73°N 73.07°W (Elev. 16 ft)
8:57 am EST Nov 11, 2026
12pm EST Nov 11, 2026-6pm EST Nov 17, 2026
 
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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