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.

Mostly Cloudy

64°F

18°C

Humidity 35%
Wind Speed Vrbl 6 mph
Barometer 30.04 in (1017.0 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 18 Oct 11:56 am EDT
Extended Forecast for

Blue Point NY

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 64. Northwest wind 7 to 9 mph becoming south.

    High: 64 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 51. Calm wind becoming south around 5 mph after midnight.

    Low: 51 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 69. South wind 6 to 15 mph, with gusts as high as 26 mph.

    High: 69 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers likely, then showers and possibly a thunderstorm after 5am. Low around 57. Breezy, with a south wind 15 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 57 °F

    Chance
    Showers then
    Showers and
    Breezy

  • Monday

    Monday: Showers and possibly a thunderstorm before 11am, then a chance of showers. Steady temperature around 63. Breezy, with a south wind 18 to 22 mph becoming southwest in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 63 °F

    Breezy.
    Showers then
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers before 2pm. Mostly sunny, with a high near 63.

    High: 63 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 64. Northwest wind 7 to 9 mph becoming south.
Tonight
Mostly clear, with a low around 51. Calm wind becoming south around 5 mph after midnight.
Sunday
Mostly sunny, with a high near 69. South wind 6 to 15 mph, with gusts as high as 26 mph.
Sunday Night
Showers likely, then showers and possibly a thunderstorm after 5am. Low around 57. Breezy, with a south wind 15 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Showers and possibly a thunderstorm before 11am, then a chance of showers. Steady temperature around 63. Breezy, with a south wind 18 to 22 mph becoming southwest in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Sunny, with a high near 66.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 53.
Wednesday
A 40 percent chance of showers before 2pm. Mostly sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Mostly sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 48.
Friday
Mostly sunny, with a high near 61.
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:
7:17 am EDT Oct 18, 2025
Forecast Valid:
12pm EDT Oct 18, 2025-6pm EDT Oct 24, 2025
 
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