Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
56°F
13°C
| Humidity | 81% |
| Wind Speed | SE 3 mph |
| Barometer | 30.46 in (1031.3 mb) |
| Dewpoint | 50°F (10°C) |
| Visibility | 10.00 mi |
| Last update | 10 Oct 7:56 pm EDT |
Extended Forecast for
Sayville NY
Tonight

Low: 55 °F
Mostly Cloudy
Sunday
High: 61 °F
Chance Rain
then RainSunday Night

Low: 60 °F
Heavy Rain
Columbus Day
High: 68 °F
Rain Likely
then Slight
Chance RainMonday Night

Low: 56 °F
Mostly Clear
Tuesday

High: 67 °F
Partly Sunny
Tuesday Night

Low: 61 °F
Chance
ShowersWednesday

High: 71 °F
Mostly Sunny
Wednesday Night

Low: 54 °F
Mostly Clear
Detailed Forecast
Tonight
Mostly cloudy, with a low around 55. East wind around 6 mph.
Sunday
Periods of rain, mainly after noon. High near 61. East wind 11 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Periods of rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 60. East wind 14 to 18 mph becoming north after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Columbus Day
Rain likely, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a high near 68. North wind 10 to 14 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Mostly clear, with a low around 56. Light north wind.
Tuesday
Partly sunny, with a high near 67.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 61.
Wednesday
Mostly sunny, with a high near 71.
Wednesday Night
Mostly clear, with a low around 54.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 53.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 64.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 54.
Saturday
Partly sunny, with a high near 60. Breezy.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Sayville NY
40.74°N 73.1°W (Elev. 30 ft)
40.74°N 73.1°W (Elev. 30 ft)
3:14 pm EDT Oct 10, 2026
8pm EDT Oct 10, 2026-6pm EDT Oct 17, 2026


