National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds

62°F

17°C

Humidity 67%
Wind Speed NE 8 mph
Barometer 30.21 in (1023.0 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 19 Aug 4:56 am EDT
Extended Forecast for

East Islip NY

High Surf Advisory August 20, 06:00am until August 21, 06:00pm
Click here for hazard details and duration
High Surf Advisory

  • Today

    Today: Mostly sunny, with a high near 75. East wind 8 to 11 mph.

    High: 75 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 64. East wind around 7 mph.

    Low: 64 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 75. East wind 8 to 13 mph. Chance of precipitation is 50%.

    High: 75 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Northeast wind 11 to 13 mph. Chance of precipitation is 50%.

    Low: 64 °F

    Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers. Partly sunny, with a high near 76. Breezy, with a northeast wind 16 to 21 mph.

    High: 76 °F

    Slight Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 75. East wind 8 to 11 mph.
Tonight
Partly cloudy, with a low around 64. East wind around 7 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 75. East wind 8 to 13 mph. Chance of precipitation is 50%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Northeast wind 11 to 13 mph. Chance of precipitation is 50%.
Thursday
A 20 percent chance of showers. Partly sunny, with a high near 76. Breezy, with a northeast wind 16 to 21 mph.
Thursday Night
Partly cloudy, with a low around 61.
Friday
Sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 79.
Saturday Night
Partly cloudy, with a low around 67.
Sunday
A 30 percent chance of showers. Mostly sunny, with a high near 79.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 67.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
East Islip NY
 40.73°N 73.19°W (Elev. 16 ft)
Last Update:
4:58 am EDT Aug 19, 2025
Forecast Valid:
5am EDT Aug 19, 2025-6pm EDT Aug 25, 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