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.

Fair

72°F

22°C

Humidity 87%
Wind Speed NW 7 mph
Barometer 29.94 in (1013.8 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 20 Aug 3:56 am EDT
Extended Forecast for

2 Miles ENE Ocean Beach NY

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

  • Today

    Today: Showers and possibly a thunderstorm, mainly after 5pm. High near 80. Northwest wind 5 to 9 mph becoming east in the morning. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 80 °F

    Mostly Sunny
    then Showers

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 11pm, then a chance of showers. Low around 69. Northeast wind 14 to 17 mph. Chance of precipitation is 80%. New precipitation amounts between 1 and 2 inches possible.

    Low: 69 °F

    Showers then
    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers, mainly between 8am and 11am. Mostly cloudy, with a high near 77. Northeast wind 14 to 17 mph.

    High: 77 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely after 2am. Mostly cloudy, with a low around 70. Northeast wind 11 to 13 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 70 °F

    Mostly Cloudy
    then Showers
    Likely

  • Saturday

    Saturday: Showers before 2pm, then showers and possibly a thunderstorm between 2pm and 5pm, then showers after 5pm. High near 77. Northeast wind around 14 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    High: 77 °F

    Showers

  • Saturday Night

    Saturday Night: Showers likely. Mostly cloudy, with a low around 71. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 71 °F

    Showers
    Likely

  • Sunday

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

    High: 79 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

Detailed Forecast

Today
Showers and possibly a thunderstorm, mainly after 5pm. High near 80. Northwest wind 5 to 9 mph becoming east in the morning. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and possibly a thunderstorm before 11pm, then a chance of showers. Low around 69. Northeast wind 14 to 17 mph. Chance of precipitation is 80%. New precipitation amounts between 1 and 2 inches possible.
Friday
A 30 percent chance of showers, mainly between 8am and 11am. Mostly cloudy, with a high near 77. Northeast wind 14 to 17 mph.
Friday Night
Showers likely after 2am. Mostly cloudy, with a low around 70. Northeast wind 11 to 13 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Showers before 2pm, then showers and possibly a thunderstorm between 2pm and 5pm, then showers after 5pm. High near 77. Northeast wind around 14 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Saturday Night
Showers likely. Mostly cloudy, with a low around 71. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 71.
Monday
Sunny, with a high near 79.
Monday Night
Mostly clear, with a low around 69.
Tuesday
Sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 71.
Wednesday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Ocean Beach NY
 40.65°N 73.12°W (Elev. 0 ft)
Last Update:
2:27 am EDT Aug 20, 2026
Forecast Valid:
4am EDT Aug 20, 2026-6pm EDT Aug 26, 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