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.

Fair

54°F

12°C

Humidity 67%
Wind Speed W 9 mph
Barometer 29.89 in (1012.0 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 10 Nov 9:56 pm EST
Extended Forecast for

Nissequogue NY

  • Tonight

    Tonight: Mostly clear, with a low around 46. West wind around 11 mph.

    Low: 46 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Mostly sunny, with a high near 60. Northwest wind 6 to 8 mph becoming southwest in the afternoon.

    High: 60 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain after 4am. Mostly cloudy, with a low around 47. Southeast wind 3 to 7 mph.

    Low: 47 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain, mainly after 1pm. High near 60. East wind 10 to 13 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 60 °F

    Chance Rain
    then Rain

  • Thursday Night

    Thursday Night: Rain likely. Cloudy, with a low around 44. North wind 13 to 16 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 44 °F

    Rain Likely

  • Friday

    Friday: Rain. High near 51. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 51 °F

    Rain

  • Friday Night

    Friday Night: A 50 percent chance of rain. Cloudy, with a low around 36.

    Low: 36 °F

    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny

  • Saturday Night

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

    Low: 37 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 46. West wind around 11 mph.
Veterans Day
Mostly sunny, with a high near 60. Northwest wind 6 to 8 mph becoming southwest in the afternoon.
Wednesday Night
A 30 percent chance of rain after 4am. Mostly cloudy, with a low around 47. Southeast wind 3 to 7 mph.
Thursday
Rain, mainly after 1pm. High near 60. East wind 10 to 13 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain likely. Cloudy, with a low around 44. North wind 13 to 16 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 51. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A 50 percent chance of rain. Cloudy, with a low around 36.
Saturday
Partly sunny, with a high near 49.
Saturday Night
Mostly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 51.
Sunday Night
Partly cloudy, with a low around 36.
Monday
Mostly sunny, with a high near 52.
Monday Night
Partly cloudy, with a low around 35.
Tuesday
Sunny, with a high near 51.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Nissequogue NY
 40.9°N 73.18°W (Elev. 7 ft)
Last Update:
6:08 pm EST Nov 10, 2026
Forecast Valid:
10pm EST Nov 10, 2026-6pm EST Nov 17, 2026
 
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