Hazardous Weather Conditions
- Hazardous Weather Outlook
- Rip Current Statement until August 22, 08:00 PM EDT
- High Surf Advisory until August 22, 08:00 PM EDT
- Coastal Flood Warning in effect from August 21, 05:00 PM EDT until August 22, 01:00 AM EDT
- Coastal Flood Advisory in effect from August 22, 05:00 AM EDT until August 22, 01:00 PM EDT
- Coastal Flood Advisory in effect from August 22, 06:00 PM EDT until August 23, 02:00 AM EDT
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Light Drizzle Fog/Mist
63°F
17°C
| Humidity | 90% |
| Wind Speed | NE 17 G 25 mph |
| Barometer | 29.99 in (1015.6 mb) |
| Dewpoint | 60°F (16°C) |
| Visibility | 3.00 mi |
| Last update | 21 Aug 6:56 am EDT |
Extended Forecast for
Sayville NY
High Surf Advisory August 21, 07:23am until August 22, 08:00pm
Coastal Flood Advisory August 22, 05:00am until August 22, 01:00pm
Coastal Flood Advisory August 22, 06:00pm until August 23, 02:00am
Coastal Flood Warning August 21, 05:00pm until August 22, 01:00am
NOW until 8:00pm Fri
High Surf Advisory
Today
High: 73 °F
Breezy.
Chance
Showers then
Mostly CloudyTonight
Low: 60 °F
Mostly Cloudy
and Breezy
then Mostly
ClearFriday
High: 81 °F
Sunny
Friday Night
Low: 65 °F
Mostly Clear
Saturday
High: 81 °F
Sunny
Saturday Night
Low: 67 °F
Mostly Clear
Sunday
High: 79 °F
Mostly Sunny
Sunday Night
Low: 68 °F
Chance
Showers
Detailed Forecast
Today
A 30 percent chance of showers, mainly before 8am. Cloudy, with a high near 73. Breezy, with a northeast wind 18 to 21 mph, with gusts as high as 33 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 60. Breezy, with a northeast wind 16 to 20 mph, with gusts as high as 32 mph.
Friday
Sunny, with a high near 81. North wind 9 to 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly clear, with a low around 65. South wind 3 to 5 mph.
Saturday
Sunny, with a high near 81. Southwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 67.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 68.
Monday
A 50 percent chance of showers. Partly sunny, with a high near 79.
Monday Night
A 30 percent chance of showers before 2am. Partly cloudy, with a low around 64.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Sunny, with a high near 77.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Sayville NY
40.76°N 73.07°W (Elev. 30 ft)
40.76°N 73.07°W (Elev. 30 ft)
1:51 am EDT Aug 21, 2025
7am EDT Aug 21, 2025-6pm EDT Aug 27, 2025
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
