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.

Fog/Mist

57°F

14°C

Humidity 90%
Wind Speed N 16 mph
Barometer 29.97 in (1014.7 mb)
Dewpoint 54°F (12°C)
Visibility 6.00 mi
Last update 14 Oct 2:56 am EDT
Extended Forecast for

5 Miles SSE West Sayville NY

Coastal Flood Advisory until October 14, 08:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory until October 14, 08:00pm

    NOW until 8:00pm Tue

    Coastal Flood Advisory

  • Overnight

    Low: 61 °F

    Chance Rain
    and Windy

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly after 5pm. Mostly cloudy, with a steady temperature around 60. Windy, with a north wind 22 to 26 mph.

    High: 60 °F

    Chance Rain
    and Windy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain, mainly before 8pm. Partly cloudy, with a steady temperature around 61. North wind 14 to 18 mph.

    Low: 61 °F

    Chance Rain
    then Partly
    Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 64. Breezy, with a north wind 14 to 20 mph.

    High: 64 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 50. Breezy, with a north wind around 24 mph.

    Low: 50 °F

    Mostly Clear
    and Breezy

  • Thursday

    Thursday: Sunny, with a high near 58. Breezy.

    High: 58 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 48. Breezy.

    Low: 48 °F

    Mostly Clear
    and Breezy

  • Friday

    Friday: Sunny, with a high near 60. Breezy.

    High: 60 °F

    Sunny and
    Breezy then
    Sunny

Detailed Forecast

Overnight
A 40 percent chance of rain. Cloudy, with a steady temperature around 61. Windy, with a northeast wind around 30 mph.
Tuesday
A 30 percent chance of rain, mainly after 5pm. Mostly cloudy, with a steady temperature around 60. Windy, with a north wind 22 to 26 mph.
Tuesday Night
A 30 percent chance of rain, mainly before 8pm. Partly cloudy, with a steady temperature around 61. North wind 14 to 18 mph.
Wednesday
Mostly sunny, with a high near 64. Breezy, with a north wind 14 to 20 mph.
Wednesday Night
Mostly clear, with a low around 50. Breezy, with a north wind around 24 mph.
Thursday
Sunny, with a high near 58. Breezy.
Thursday Night
Mostly clear, with a low around 48. Breezy.
Friday
Sunny, with a high near 60. Breezy.
Friday Night
Mostly clear, with a low around 53.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 61.
Sunday
A 30 percent chance of showers. Mostly sunny, with a high near 67.
Sunday Night
Showers likely. Mostly cloudy, with a low around 59. Breezy. Chance of precipitation is 70%.
Monday
A 40 percent chance of showers. Partly sunny, with a high near 64. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE West Sayville NY
 40.67°N 73.06°W (Elev. 0 ft)
Last Update:
1:42 am EDT Oct 14, 2025
Forecast Valid:
3am EDT Oct 14, 2025-6pm EDT Oct 20, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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