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

61°F

16°C

Humidity 52%
Wind Speed NE 8 mph
Barometer 30.27 in (1025.1 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 24 Sep 6:56 pm EDT
Extended Forecast for

Holbrook NY

Coastal Flood Watch September 25, 05:00pm until September 26, 12:00pm
High Surf Advisory September 24, 07:31pm until September 26, 08:00pm
Wind Advisory September 25, 02:00pm until September 27, 06:00am
Coastal Flood Advisory until September 25, 12:00pm
Click here for hazard details and duration
Coastal Flood Watch
High Surf Advisory
Wind Advisory
Coastal Flood Advisory
  •  
    High Surf Advisory September 24, 07:31pm until September 26, 08:00pm
    Coastal Flood Advisory until September 25, 12:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 53 °F

    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of rain after 2pm. Mostly cloudy, with a high near 66. Breezy, with a northeast wind 20 to 23 mph, with gusts as high as 43 mph.

    High: 66 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Rain

  • Friday Night

    Friday Night: Rain likely, mainly after 8pm. Cloudy, with a low around 55. Breezy, with a north wind around 24 mph, with gusts as high as 48 mph. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 55 °F

    Rain Likely
    and Breezy

  • Saturday

    Saturday: Rain. High near 64. Breezy, with a north wind around 25 mph, with gusts as high as 47 mph. Chance of precipitation is 80%. New precipitation amounts between 1 and 2 inches possible.

    High: 64 °F

    Rain and
    Breezy

  • Saturday Night

    Saturday Night: Rain. Low around 55. Breezy, with a north wind 18 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 55 °F

    Rain and
    Breezy

  • Sunday

    Sunday: Rain. High near 65. Breezy. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 65 °F

    Rain and
    Breezy

  • Sunday Night

    Sunday Night: Rain likely before 8pm, then showers likely, mainly between 8pm and 2am. Cloudy, with a low around 56. Chance of precipitation is 70%.

    Low: 56 °F

    Rain Likely

  • Monday

    Monday: A 40 percent chance of showers before 2pm. Mostly cloudy, with a high near 67.

    High: 67 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 53. Northeast wind 13 to 15 mph, with gusts as high as 26 mph.
Friday
A 40 percent chance of rain after 2pm. Mostly cloudy, with a high near 66. Breezy, with a northeast wind 20 to 23 mph, with gusts as high as 43 mph.
Friday Night
Rain likely, mainly after 8pm. Cloudy, with a low around 55. Breezy, with a north wind around 24 mph, with gusts as high as 48 mph. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday
Rain. High near 64. Breezy, with a north wind around 25 mph, with gusts as high as 47 mph. Chance of precipitation is 80%. New precipitation amounts between 1 and 2 inches possible.
Saturday Night
Rain. Low around 55. Breezy, with a north wind 18 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Sunday
Rain. High near 65. Breezy. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday Night
Rain likely before 8pm, then showers likely, mainly between 8pm and 2am. Cloudy, with a low around 56. Chance of precipitation is 70%.
Monday
A 40 percent chance of showers before 2pm. Mostly cloudy, with a high near 67.
Monday Night
Mostly cloudy, with a low around 56.
Tuesday
Mostly sunny, with a high near 69.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 70.
Wednesday Night
Partly cloudy, with a low around 59.
Thursday
Partly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Holbrook NY
 40.8°N 73.09°W (Elev. 98 ft)
Last Update:
4:47 pm EDT Sep 24, 2026
Forecast Valid:
7pm EDT Sep 24, 2026-6pm EDT Oct 1, 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