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.

Overcast

68°F

20°C

Humidity 78%
Wind Speed E 6 mph
Barometer 30.13 in (1020.1 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 2 Sep 8:56 am EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • Today

    Today: Mostly cloudy, with a high near 73. East wind 16 to 18 mph.

    High: 73 °F

    Mostly Cloudy

  • Tonight

    Tonight: Showers likely, mainly after 5am. Mostly cloudy, with a low around 70. East wind 10 to 13 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 70 °F

    Mostly Cloudy
    then Showers
    Likely

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly before 2pm. Mostly cloudy, with a high near 78. Southwest wind 11 to 15 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Showers
    Likely then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 72. Northwest wind around 10 mph. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 79. Northwest wind 8 to 10 mph.

    High: 79 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 73. East wind 16 to 18 mph.
Tonight
Showers likely, mainly after 5am. Mostly cloudy, with a low around 70. East wind 10 to 13 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Showers and thunderstorms likely, mainly before 2pm. Mostly cloudy, with a high near 78. Southwest wind 11 to 15 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 72. Northwest wind around 10 mph. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 79. Northwest wind 8 to 10 mph.
Friday Night
Mostly clear, with a low around 68.
Saturday
Sunny, with a high near 75.
Saturday Night
Partly cloudy, with a low around 65.
Sunday
Mostly sunny, with a high near 72.
Sunday Night
Mostly clear, with a low around 65.
Labor Day
Sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
Mostly sunny, with a high near 75.
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:
5:25 am EDT Sep 2, 2026
Forecast Valid:
9am EDT Sep 2, 2026-6pm EDT Sep 8, 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