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.

Fair

41°F

5°C

Humidity 86%
Wind Speed Calm
Barometer 30.19 in (1022.2 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 17 Apr 11:56 pm EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • Overnight

    Overnight: Patchy frost after 3am. Otherwise, clear, with a low around 40. North wind 3 to 5 mph.

    Low: 40 °F

    Patchy Frost

  • Friday

    Friday: Patchy frost before 7am. Otherwise, mostly sunny, with a high near 52. Light south wind increasing to 13 to 18 mph in the morning. Winds could gust as high as 28 mph.

    High: 52 °F

    Patchy Frost
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 49. Breezy, with a south wind 21 to 23 mph.

    Low: 49 °F

    Mostly Cloudy
    and Breezy

  • Saturday

    Saturday: Partly sunny, with a high near 62. Breezy, with a southwest wind around 23 mph.

    High: 62 °F

    Partly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 52. Breezy, with a west wind 15 to 21 mph.

    Low: 52 °F

    Slight Chance
    Showers and
    Breezy

  • Sunday

    Sunday: Mostly sunny, with a steady temperature around 55.

    High: 55 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 51.

    High: 51 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 50 percent chance of showers after 2am. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
Patchy frost after 3am. Otherwise, clear, with a low around 40. North wind 3 to 5 mph.
Friday
Patchy frost before 7am. Otherwise, mostly sunny, with a high near 52. Light south wind increasing to 13 to 18 mph in the morning. Winds could gust as high as 28 mph.
Friday Night
Mostly cloudy, with a low around 49. Breezy, with a south wind 21 to 23 mph.
Saturday
Partly sunny, with a high near 62. Breezy, with a southwest wind around 23 mph.
Saturday Night
A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 52. Breezy, with a west wind 15 to 21 mph.
Sunday
Mostly sunny, with a steady temperature around 55.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Partly sunny, with a high near 51.
Monday Night
A 50 percent chance of showers after 2am. Mostly cloudy, with a low around 47.
Tuesday
A 30 percent chance of showers before 2pm. Partly sunny, with a high near 57.
Tuesday Night
Partly cloudy, with a low around 48.
Wednesday
Sunny, with a high near 56.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Partly sunny, with a high near 55.
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:
9:53 pm EDT Apr 17, 2025
Forecast Valid:
12am EDT Apr 18, 2025-6pm EDT Apr 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