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

55°F

13°C

Humidity 57%
Wind Speed NE 15 G 23 mph
Barometer 30.22 in (1023.3 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 24 Sep 11:56 pm EDT
Extended Forecast for

Blue Point NY

Coastal Flood Watch September 25, 05:00pm until September 26, 12:00pm
High Surf Advisory September 25, 12:44am until September 26, 08:00pm
Wind Advisory September 25, 02:00pm until September 27, 06:00am
Coastal Flood Advisory September 25, 12:44am 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 25, 12:44am until September 26, 08:00pm
    Coastal Flood Advisory September 25, 12:44am until September 25, 12:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 54 °F

    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of rain, mainly after 2pm. Mostly cloudy, with a high near 66. Breezy, with a northeast wind 22 to 25 mph, with gusts as high as 45 mph.

    High: 66 °F

    Chance Rain
    and Breezy

  • Friday Night

    Friday Night: Rain likely, mainly after 8pm. Cloudy, with a low around 55. Windy, with a north wind 26 to 28 mph, with gusts as high as 50 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 Windy

  • Saturday

    Saturday: Rain. High near 64. Windy, with a north wind 26 to 29 mph, with gusts as high as 48 mph. Chance of precipitation is 80%. New precipitation amounts between 1 and 2 inches possible.

    High: 64 °F

    Rain and
    Windy

  • Saturday Night

    Saturday Night: Rain. Low around 55. Breezy, with a north wind 22 to 25 mph, with gusts as high as 41 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 58. Breezy. Chance of precipitation is 70%.

    Low: 58 °F

    Rain Likely
    and Breezy

  • Monday

    Monday: A 40 percent chance of showers before 2pm. Mostly cloudy, with a high near 66.

    High: 66 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 54. Northeast wind around 18 mph, with gusts as high as 29 mph.
Friday
A 40 percent chance of rain, mainly after 2pm. Mostly cloudy, with a high near 66. Breezy, with a northeast wind 22 to 25 mph, with gusts as high as 45 mph.
Friday Night
Rain likely, mainly after 8pm. Cloudy, with a low around 55. Windy, with a north wind 26 to 28 mph, with gusts as high as 50 mph. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday
Rain. High near 64. Windy, with a north wind 26 to 29 mph, with gusts as high as 48 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 22 to 25 mph, with gusts as high as 41 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 58. Breezy. Chance of precipitation is 70%.
Monday
A 40 percent chance of showers before 2pm. Mostly cloudy, with a high near 66.
Monday Night
Mostly cloudy, with a low around 57.
Tuesday
Mostly sunny, with a high near 69.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Mostly sunny, with a high near 69.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
Partly sunny, with a high near 71.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Blue Point NY
 40.75°N 73.04°W (Elev. 30 ft)
Last Update:
9:58 pm EDT Sep 24, 2026
Forecast Valid:
12am EDT Sep 25, 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