Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fog/Mist
77°F
25°C
| Humidity | 90% |
| Wind Speed | SW 13 G 26 mph |
| Barometer | 29.77 in (1007.8 mb) |
| Dewpoint | 74°F (23°C) |
| Visibility | 6.00 mi |
| Heat Index | 78°F (26°C) |
| Last update | 3 Aug 1:56 pm EDT |
Extended Forecast for
Sayville NY
High Surf Advisory until August 3, 09:00pm
NOW until 9:00pm Mon
High Surf Advisory
This Afternoon
High: 79 °F
Showers
Tonight
Low: 67 °F
Showers then
Partly CloudyTuesday
High: 80 °F
Mostly Sunny
Tuesday Night
Low: 68 °F
Mostly Cloudy
Wednesday
High: 80 °F
Chance
ShowersWednesday Night
Low: 72 °F
Mostly Cloudy
Thursday
High: 82 °F
Mostly Sunny
Thursday Night
Low: 74 °F
Partly Cloudy
Detailed Forecast
This Afternoon
Showers and possibly a thunderstorm. High near 79. Southwest wind around 18 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 11pm. Low around 67. West wind 7 to 11 mph becoming north after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Mostly sunny, with a high near 80. North wind around 7 mph becoming southeast in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 68. Southeast wind around 5 mph becoming calm in the evening.
Wednesday
A chance of showers, with thunderstorms also possible after 5pm. Partly sunny, with a high near 80. Calm wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 72.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Partly cloudy, with a low around 74.
Friday
Sunny, with a high near 83.
Friday Night
A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 74.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 73.
Sunday
Mostly sunny, with a high near 83.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Sayville NY
40.73°N 73.07°W (Elev. 16 ft)
40.73°N 73.07°W (Elev. 16 ft)
2:12 am EDT Aug 3, 2026
2pm EDT Aug 3, 2026-6pm EDT Aug 9, 2026
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