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

19°C

66°F

Humidity 78%
Wind Speed SE 11 km/h
Barometer 1023.2 mb (30.22 in)
Dewpoint 15°C (59°F)
Visibility 16 km
Last update 13 May 11:56 am EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • This Afternoon

    This Afternoon: A 30 percent chance of showers, mainly after 2pm. Cloudy, with a high near 16. East wind 14 to 18 km/h.

    High: 16 °C

    Chance
    Showers

  • Tonight

    Tonight: A 50 percent chance of showers. Cloudy, with a low around 13. East wind 18 to 21 km/h.

    Low: 13 °C

    Chance
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 16. East wind 24 to 26 km/h. Chance of precipitation is 80%. New rainfall amounts between 5 and 7.5 mm possible.

    High: 16 °C

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 13. Southeast wind 14 to 24 km/h. Chance of precipitation is 80%. New rainfall amounts between 5 and 7.5 mm possible.

    Low: 13 °C

    Showers

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 17. Southeast wind around 11 km/h.

    High: 17 °C

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 14.

    Low: 14 °C

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers after 2pm. Mostly cloudy, with a high near 18.

    High: 18 °C

    Mostly Cloudy
    then Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 16.

    Low: 16 °C

    Chance
    Showers

  • Saturday

    Saturday: A 40 percent chance of showers after 2pm. Partly sunny, with a high near 19.

    High: 19 °C

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
A 30 percent chance of showers, mainly after 2pm. Cloudy, with a high near 16. East wind 14 to 18 km/h.
Tonight
A 50 percent chance of showers. Cloudy, with a low around 13. East wind 18 to 21 km/h.
Wednesday
Showers and possibly a thunderstorm. High near 16. East wind 24 to 26 km/h. Chance of precipitation is 80%. New rainfall amounts between 5 and 7.5 mm possible.
Wednesday Night
Showers and possibly a thunderstorm. Low around 13. Southeast wind 14 to 24 km/h. Chance of precipitation is 80%. New rainfall amounts between 5 and 7.5 mm possible.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 17. Southeast wind around 11 km/h.
Thursday Night
Mostly cloudy, with a low around 14.
Friday
A 30 percent chance of showers after 2pm. Mostly cloudy, with a high near 18.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 16.
Saturday
A 40 percent chance of showers after 2pm. Partly sunny, with a high near 19.
Saturday Night
A 40 percent chance of showers. Partly cloudy, with a low around 16.
Sunday
Mostly sunny, with a high near 20.
Sunday Night
Partly cloudy, with a low around 14.
Monday
Mostly sunny, with a high near 18.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Blue Point NY
 40.68°N 72.99°W (Elev. 0 m)
Last Update:
9:46 am EDT May 13, 2025
Forecast Valid:
12pm EDT May 13, 2025-6pm EDT May 19, 2025
 
Forecast Discussion
 
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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