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.

Mostly Cloudy

80°F

27°C

Humidity 60%
Wind Speed SE 7 mph
Barometer 29.96 in (1014.5 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 20 Aug 2:56 pm EDT
Extended Forecast for

Ocean Beach NY

Flood Watch August 20, 03:25pm until August 21, 02:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch August 20, 03:25pm until August 21, 02:00am

    NOW until 2:00am Fri

    Flood Watch

  • This Afternoon

    High: 81 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 2am, then showers likely. Low around 69. Northeast wind 8 to 16 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    Low: 69 °F

    Showers

  • Friday

    Friday: A 40 percent chance of showers, mainly after 5pm. Mostly cloudy, with a high near 77. Northeast wind 14 to 18 mph.

    High: 77 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers before 8pm, then a chance of showers after 2am. Mostly cloudy, with a low around 70. Northeast wind around 11 mph. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers likely, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 76. East wind around 13 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 76 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely before 11pm, then showers likely and possibly a thunderstorm between 11pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 71 °F

    Showers
    Likely

  • Sunday

    Sunday: A 30 percent chance of showers before 8am. Partly sunny, with a high near 79.

    High: 79 °F

    Chance
    Showers then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A slight chance of showers, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 81. South wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 69. Northeast wind 8 to 16 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Friday
A 40 percent chance of showers, mainly after 5pm. Mostly cloudy, with a high near 77. Northeast wind 14 to 18 mph.
Friday Night
A chance of showers before 8pm, then a chance of showers after 2am. Mostly cloudy, with a low around 70. Northeast wind around 11 mph. Chance of precipitation is 30%.
Saturday
Showers likely, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 76. East wind around 13 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers likely before 11pm, then showers likely and possibly a thunderstorm between 11pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A 30 percent chance of showers before 8am. Partly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 70.
Monday
Sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 68.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 70.
Wednesday
Sunny, with a high near 78.
Wednesday Night
A 50 percent chance of showers. Partly cloudy, with a low around 72.
Thursday
A chance of showers. Partly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ocean Beach NY
 40.65°N 73.15°W (Elev. 0 ft)
Last Update:
2:22 pm EDT Aug 20, 2026
Forecast Valid:
3pm EDT Aug 20, 2026-6pm EDT Aug 27, 2026
 
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