Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds and Breezy

54°F

12°C

Humidity 45%
Wind Speed NW 23 G 35 mph
Barometer 29.91 in (1012.6 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 16 Oct 10:56 am EDT
Extended Forecast for

Islip NY

  • Today

    Today: Sunny, with a high near 58. North wind 14 to 16 mph.

    High: 58 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 44. North wind 11 to 15 mph, with gusts as high as 26 mph.

    Low: 44 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 62. North wind 11 to 13 mph.

    High: 62 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 45. North wind 6 to 8 mph.

    Low: 45 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 64. North wind around 6 mph becoming west in the afternoon.

    High: 64 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers likely after 8pm.  Mostly cloudy, with a low around 54. Chance of precipitation is 70%.

    Low: 54 °F

    Showers
    Likely

  • Monday

    Monday: A 40 percent chance of showers.  Partly sunny, with a high near 66.

    High: 66 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 58. North wind 14 to 16 mph.
Tonight
Clear, with a low around 44. North wind 11 to 15 mph, with gusts as high as 26 mph.
Friday
Sunny, with a high near 62. North wind 11 to 13 mph.
Friday Night
Mostly clear, with a low around 45. North wind 6 to 8 mph.
Saturday
Sunny, with a high near 64. North wind around 6 mph becoming west in the afternoon.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 69.
Sunday Night
Showers likely after 8pm. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.
Monday
A 40 percent chance of showers. Partly sunny, with a high near 66.
Monday Night
A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 50.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 53.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
Islip NY
 40.73°N 73.22°W (Elev. 7 ft)
1:38 am EDT Oct 16, 2025
11am EDT Oct 16, 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