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

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy and Breezy

66°F

19°C

Humidity 59%
Wind Speed N 22 G 33 mph
Barometer 29.99 in (1015.5 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 8 Oct 2:56 pm EDT
Extended Forecast for

2 Miles SW Nissequogue NY

  • This Afternoon

    This Afternoon: A 20 percent chance of showers. Partly sunny, with a steady temperature around 66. North wind around 16 mph.

    High: 66 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 48. North wind 11 to 13 mph, with gusts as high as 23 mph.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 60. North wind 10 to 14 mph.

    High: 60 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 43. Northeast wind around 7 mph.

    Low: 43 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 63. Northeast wind around 5 mph becoming light and variable.

    High: 63 °F

    Sunny

  • Friday Night

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

    Low: 50 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Chance Rain

  • Sunday

    Sunday: A 50 percent chance of rain. Mostly cloudy, with a high near 64. Breezy.

    High: 64 °F

    Chance Rain
    and Breezy

Detailed Forecast

This Afternoon
A 20 percent chance of showers. Partly sunny, with a steady temperature around 66. North wind around 16 mph.
Tonight
Mostly clear, with a low around 48. North wind 11 to 13 mph, with gusts as high as 23 mph.
Thursday
Sunny, with a high near 60. North wind 10 to 14 mph.
Thursday Night
Clear, with a low around 43. Northeast wind around 7 mph.
Friday
Sunny, with a high near 63. Northeast wind around 5 mph becoming light and variable.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Partly sunny, with a high near 68.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 53.
Sunday
A 50 percent chance of rain. Mostly cloudy, with a high near 64. Breezy.
Sunday Night
Rain likely. Mostly cloudy, with a low around 52. Windy. Chance of precipitation is 60%.
Columbus Day
A 50 percent chance of rain. Mostly cloudy, with a high near 64. Windy.
Monday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 52. Breezy.
Tuesday
A 30 percent chance of rain. Partly sunny, with a high near 66.
Tuesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 53.
Wednesday
Mostly sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Nissequogue NY
 40.88°N 73.21°W (Elev. 85 ft)
Last Update:
2:34 pm EDT Oct 8, 2025
Forecast Valid:
3pm EDT Oct 8, 2025-6pm EDT Oct 15, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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