Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Light Rain Fog/Mist

50°F

10°C

Humidity 86%
Wind Speed N 12 mph
Barometer 29.78 in (1008.4 mb)
Dewpoint 46°F (8°C)
Visibility 6.00 mi
Wind Chill45°F (7°C)
Last update 22 May 5:56 pm EDT
Extended Forecast for

Brentwood NY

Coastal Flood Advisory May 22, 06:53pm until May 22, 08:00pm
Click here for hazard details and duration
...
  •  
    Coastal Flood Advisory May 22, 06:53pm until May 22, 08:00pm

    NOW until 8:00pm Thu

    Coastal Flood Advisory

  • Tonight

    Low: 45 °F

    Rain Likely
    then Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers, mainly after 2pm.  Mostly cloudy, with a high near 63. West wind 5 to 11 mph.

    High: 63 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers, mainly before 8pm.  Partly cloudy, with a low around 49. West wind 7 to 10 mph.

    Low: 49 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 65. West wind 13 to 17 mph.

    High: 65 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 51. West wind around 8 mph.

    Low: 51 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Memorial Day

    Memorial Day: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

Detailed Forecast

Tonight
Rain likely before 8pm, then showers likely, mainly between 8pm and 2am. Cloudy, with a low around 45. Northwest wind 7 to 11 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 30 percent chance of showers, mainly after 2pm. Mostly cloudy, with a high near 63. West wind 5 to 11 mph.
Friday Night
A 30 percent chance of showers, mainly before 8pm. Partly cloudy, with a low around 49. West wind 7 to 10 mph.
Saturday
Mostly sunny, with a high near 65. West wind 13 to 17 mph.
Saturday Night
Partly cloudy, with a low around 51. West wind around 8 mph.
Sunday
Mostly sunny, with a high near 68.
Sunday Night
Partly cloudy, with a low around 52.
Memorial Day
Mostly sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Mostly cloudy, with a high near 69.
Tuesday Night
A 30 percent chance of light rain. Mostly cloudy, with a low around 54.
Wednesday
A 30 percent chance of light rain. Mostly cloudy, with a high near 68.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 56.
Thursday
Partly sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
Brentwood NY
 40.78°N 73.24°W (Elev. 66 ft)
3:43 pm EDT May 22, 2025
6pm EDT May 22, 2025-6pm EDT May 29, 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