National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds and Breezy

59°F

15°C

Humidity 28%
Wind Speed N 21 G 28 mph
Barometer 29.85 in (1010.8 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 16 Oct 4:56 pm EDT
Extended Forecast for

Nesconset NY

  • Tonight

    Tonight: Clear, with a low around 44. North wind 11 to 17 mph, with gusts as high as 29 mph.

    Low: 44 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 62. North wind around 11 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 63. North wind around 5 mph becoming light and variable in the afternoon.

    High: 63 °F

    Sunny

  • Saturday Night

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

    Low: 52 °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 53. Chance of precipitation is 70%.

    Low: 53 °F

    Showers
    Likely

  • Monday

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

    High: 66 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 44. North wind 11 to 17 mph, with gusts as high as 29 mph.
Friday
Sunny, with a high near 62. North wind around 11 mph.
Friday Night
Mostly clear, with a low around 45. North wind 6 to 8 mph.
Saturday
Sunny, with a high near 63. North wind around 5 mph becoming light and variable in the afternoon.
Saturday Night
Partly cloudy, with a low around 52. Light south wind.
Sunday
Mostly sunny, with a high near 69.
Sunday Night
Showers likely after 8pm. Mostly cloudy, with a low around 53. Chance of precipitation is 70%.
Monday
A 40 percent chance of showers. Partly sunny, with a high near 66.
Monday Night
Partly cloudy, with a low around 50.
Tuesday
Sunny, with a high near 67.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 52.
Wednesday
A 30 percent chance of showers. Mostly sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Mostly sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Nesconset NY
 40.86°N 73.16°W (Elev. 98 ft)
Last Update:
2:14 pm EDT Oct 16, 2025
Forecast Valid:
5pm EDT Oct 16, 2025-6pm EDT Oct 23, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation