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.

A Few Clouds

47°F

8°C

Humidity 86%
Wind Speed S 5 mph
Barometer 29.97 in (1014.9 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 11 Mar 7:56 am EDT
Extended Forecast for

Blue Point NY

  • Today

    Today: A 30 percent chance of showers after 2pm. Partly sunny, with a high near 64. South wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 64 °F

    Partly Sunny
    then Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Areas of fog. Otherwise, mostly cloudy, with a low around 41. South wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    Low: 41 °F

    Chance
    Showers and
    Areas Fog

  • Thursday

    Thursday: Rain showers likely before 2pm, then a chance of rain and snow showers. Cloudy, with a temperature rising to near 51 by 10am, then falling to around 41 during the remainder of the day. Northwest wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 51 °F⇓

    Showers
    Likely then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 31. Northwest wind 7 to 9 mph.

    Low: 31 °F

    Decreasing
    Clouds

  • Friday

    Friday: Increasing clouds, with a high near 46. West wind 5 to 15 mph becoming south in the afternoon. Winds could gust as high as 25 mph.

    High: 46 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 36.

    Low: 36 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 47.

    High: 47 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 48.

    High: 48 °F

    Cloudy

Detailed Forecast

Today
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 64. South wind 6 to 10 mph, with gusts as high as 20 mph.
Tonight
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Areas of fog. Otherwise, mostly cloudy, with a low around 41. South wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Thursday
Rain showers likely before 2pm, then a chance of rain and snow showers. Cloudy, with a temperature rising to near 51 by 10am, then falling to around 41 during the remainder of the day. Northwest wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 31. Northwest wind 7 to 9 mph.
Friday
Increasing clouds, with a high near 46. West wind 5 to 15 mph becoming south in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 36.
Saturday
Sunny, with a high near 47.
Saturday Night
Mostly cloudy, with a low around 32.
Sunday
Cloudy, with a high near 48.
Sunday Night
Showers likely, mainly after 2am. Cloudy, with a low around 40. Chance of precipitation is 70%.
Monday
Showers. High near 53. Chance of precipitation is 90%.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 29.
Tuesday
Mostly sunny, with a high near 39.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Blue Point NY
 40.75°N 73.04°W (Elev. 30 ft)
Last Update:
5:42 am EDT Mar 11, 2026
Forecast Valid:
8am EDT Mar 11, 2026-6pm EDT Mar 17, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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