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

Isaias to Bring Tropical Impacts Across to the East Coast

Isaias is forecast to make landfall tonight in the Carolinas with dangerous storm surge, flash flooding, damaging winds, and isolated tropical tornadoes. Isaias may strengthen briefly prior to landfall, but the impacts will be the same regardless of the categorical definition. Isaias impacts will be felt all along the East Coast as Isaias moves northward through mid-week. Read More >

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds

86°F

30°C

Humidity 51%
Wind Speed SW 16 G 24 mph
Barometer 30.02 in (1016.4 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 3 Aug 2:56 pm EDT
Extended Forecast for

West Sayville NY

Tropical Storm Warning until further notice
Coastal Flood Watch August 4, 08:00pm until August 5, 02:00am
Click here for hazard details and duration
Tropical Storm Warning until further notice
Coastal Flood Watch
  •  
    Tropical Storm Warning until further notice

    NOW until further notice

    Tropical Storm Warning

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 8pm. Some of the storms could produce heavy rainfall. Increasing clouds, with a low around 74. Southwest wind 5 to 13 mph becoming north after midnight.

    Heavy Rain

    Low: 74 °F

  • Tuesday

    Tuesday: Tropical storm conditions expected. Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 81. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Tropical
    Storm
    Conditions
    Expected

    High: 81 °F

  • Tuesday
    Night

    Tuesday Night: Tropical storm conditions expected. Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 73. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

    Tropical
    Storm
    Conditions
    Expected

    Low: 73 °F

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly before noon. Mostly sunny, with a high near 84. Southwest wind around 8 mph.

    Chance
    T-storms

    High: 84 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 68. Southwest wind 6 to 9 mph becoming north after midnight.

    Mostly Clear

    Low: 68 °F

  • Thursday

    Thursday: Sunny, with a high near 82.

    Sunny

    High: 82 °F

  • Thursday
    Night

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

    Partly Cloudy

    Low: 70 °F

  • Friday

    Friday: Mostly sunny, with a high near 83.

    Mostly Sunny

    High: 83 °F

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly after 8pm. Some of the storms could produce heavy rainfall. Increasing clouds, with a low around 74. Southwest wind 5 to 13 mph becoming north after midnight.
Tuesday
Tropical storm conditions expected. Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 81. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday Night
Tropical storm conditions expected. Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 73. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly before noon. Mostly sunny, with a high near 84. Southwest wind around 8 mph.
Wednesday Night
Mostly clear, with a low around 68. Southwest wind 6 to 9 mph becoming north after midnight.
Thursday
Sunny, with a high near 82.
Thursday Night
Partly cloudy, with a low around 70.
Friday
Mostly sunny, with a high near 83.
Friday Night
Partly cloudy, with a low around 71.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 71.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 72.
Monday
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
West Sayville NY
 40.74°N 73.1°W (Elev. 30 ft)
Last Update:
2:40 pm EDT Aug 3, 2020
Forecast Valid:
3pm EDT Aug 3, 2020-6pm EDT Aug 10, 2020
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic 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