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

33°F

1°C

Humidity 52%
Wind Speed N 12 mph
Barometer 30.32 in (1026.9 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 28 Mar 7:56 am EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 41. Wind chill values between 20 and 30. Northwest wind 15 to 18 mph, with gusts as high as 28 mph.

    High: 41 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 30. Northwest wind 5 to 14 mph, with gusts as high as 25 mph.

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 44. Breezy, with a southwest wind 5 to 10 mph increasing to 17 to 22 mph in the afternoon.

    High: 44 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 42. Windy, with a southwest wind 21 to 26 mph.

    Low: 42 °F

    Mostly Cloudy
    and Windy

  • Monday

    Monday: Mostly cloudy, with a high near 50. Breezy, with a southwest wind 18 to 20 mph.

    High: 50 °F

    Mostly Cloudy
    and Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of rain between 8am and 2pm. Partly sunny, with a high near 52. Breezy. Chance of precipitation is 30%.

    High: 52 °F

    Chance Rain
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 48. Windy.

    Low: 48 °F

    Partly Cloudy
    and Windy

  • Wednesday

    Wednesday: A 50 percent chance of rain after 2pm. Partly sunny, with a high near 54. Windy.

    High: 54 °F

    Windy. Mostly
    Sunny then
    Chance Rain

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 41. Wind chill values between 20 and 30. Northwest wind 15 to 18 mph, with gusts as high as 28 mph.
Tonight
Mostly clear, with a low around 30. Northwest wind 5 to 14 mph, with gusts as high as 25 mph.
Sunday
Mostly sunny, with a high near 44. Breezy, with a southwest wind 5 to 10 mph increasing to 17 to 22 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 42. Windy, with a southwest wind 21 to 26 mph.
Monday
Mostly cloudy, with a high near 50. Breezy, with a southwest wind 18 to 20 mph.
Monday Night
Mostly cloudy, with a low around 45.
Tuesday
A chance of rain between 8am and 2pm. Partly sunny, with a high near 52. Breezy. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 48. Windy.
Wednesday
A 50 percent chance of rain after 2pm. Partly sunny, with a high near 54. Windy.
Wednesday Night
Rain likely, mainly after 8pm. Cloudy, with a low around 42. Breezy. Chance of precipitation is 70%.
Thursday
A 40 percent chance of rain. Cloudy, with a high near 45. Breezy.
Thursday Night
A 50 percent chance of rain. Cloudy, with a low around 38. Windy.
Friday
Rain likely. Cloudy, with a high near 42. Windy. Chance of precipitation is 60%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Blue Point NY
 40.68°N 72.99°W (Elev. 0 ft)
Last Update:
4:58 am EDT Mar 28, 2026
Forecast Valid:
8am EDT Mar 28, 2026-6pm EDT Apr 3, 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