Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds

50°F

10°C

Humidity 57%
Wind Speed NW 13 mph
Barometer 30.10 in (1019.2 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 6 Oct 6:56 am EDT
Extended Forecast for

Sayville NY

  • Today

    Today: Sunny, with a high near 63. Northwest wind 10 to 14 mph.

    High: 63 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 42. Northwest wind around 6 mph becoming calm  in the evening.

    Low: 42 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 65. Light southwest wind increasing to 8 to 13 mph in the morning.

    High: 65 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59. Southwest wind around 14 mph.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 71. Southwest wind 11 to 13 mph.

    High: 71 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 63. Northwest wind 10 to 14 mph.
Tonight
Mostly clear, with a low around 42. Northwest wind around 6 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 65. Light southwest wind increasing to 8 to 13 mph in the morning.
Wednesday Night
Mostly clear, with a low around 59. Southwest wind around 14 mph.
Thursday
Sunny, with a high near 71. Southwest wind 11 to 13 mph.
Thursday Night
Mostly clear, with a low around 57.
Friday
Sunny, with a high near 67.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 66.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
Mostly sunny, with a high near 66.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 59.
Columbus Day
A 40 percent chance of showers. Mostly cloudy, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
Sayville NY
 40.73°N 73.07°W (Elev. 16 ft)
3:07 am EDT Oct 6, 2026
7am EDT Oct 6, 2026-6pm EDT Oct 12, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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