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

53°F

12°C

Humidity 66%
Wind Speed SW 9 mph
Barometer 29.88 in (1011.6 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 10 Nov 8:56 pm EST
Extended Forecast for

Belle Terre NY

  • Tonight

    Tonight: Mostly clear, with a low around 48. West wind 11 to 15 mph.

    Low: 48 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Mostly sunny, with a high near 59. Northwest wind 6 to 8 mph becoming southwest in the afternoon.

    High: 59 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after 4am. Mostly cloudy, with a low around 49. Southeast wind 5 to 9 mph.

    Low: 49 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: Rain, mainly after 1pm. High near 60. East wind 13 to 17 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. Low around 45. Breezy, with a north wind 18 to 24 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 45 °F

    Rain and
    Breezy

  • Friday

    Friday: Rain. High near 50. Breezy. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Rain and
    Breezy

  • Friday Night

    Friday Night: A 50 percent chance of rain. Cloudy, with a low around 39.

    Low: 39 °F

    Chance Rain

  • Saturday

    Saturday: Mostly cloudy, with a high near 49.

    High: 49 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 41. Breezy.

    Low: 41 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 48. West wind 11 to 15 mph.
Veterans Day
Mostly sunny, with a high near 59. Northwest wind 6 to 8 mph becoming southwest in the afternoon.
Wednesday Night
A 20 percent chance of rain after 4am. Mostly cloudy, with a low around 49. Southeast wind 5 to 9 mph.
Thursday
Rain, mainly after 1pm. High near 60. East wind 13 to 17 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain. Low around 45. Breezy, with a north wind 18 to 24 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 50. Breezy. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A 50 percent chance of rain. Cloudy, with a low around 39.
Saturday
Mostly cloudy, with a high near 49.
Saturday Night
Mostly cloudy, with a low around 41. Breezy.
Sunday
Mostly sunny, with a high near 51.
Sunday Night
Partly cloudy, with a low around 40.
Monday
Mostly sunny, with a high near 51.
Monday Night
Partly cloudy, with a low around 40.
Tuesday
Sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Belle Terre NY
 40.96°N 73.08°W (Elev. 3 ft)
Last Update:
6:08 pm EST Nov 10, 2026
Forecast Valid:
9pm 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