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Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
72°F
22°C
| Humidity | 91% |
| Wind Speed | NW 5 mph |
| Barometer | 29.81 in (1009.2 mb) |
| Dewpoint | 69°F (21°C) |
| Visibility | 10.00 mi |
| Last update | 13 Aug 6:56 am EDT |
Extended Forecast for
Setauket-East Setauket NY
Today
High: 83 °F
T-storms then
Slight Chance
ShowersTonight

Low: 68 °F
Partly Cloudy
Friday

High: 83 °F
Sunny
Friday Night

Low: 67 °F
Slight Chance
ShowersSaturday

High: 82 °F
Sunny
Saturday Night

Low: 67 °F
Partly Cloudy
Sunday
High: 82 °F
Partly Sunny
then Chance
ShowersSunday Night

Low: 71 °F
Showers
Monday
High: 85 °F
Showers
Likely then
Mostly Sunny
Detailed Forecast
Today
Showers and thunderstorms before 11am, then a slight chance of showers after 2pm. High near 83. Light west wind becoming northwest 6 to 11 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Partly cloudy, with a low around 68. Northwest wind 5 to 7 mph.
Friday
Sunny, with a high near 83. Northwest wind 6 to 8 mph.
Friday Night
A 20 percent chance of showers before 2am. Partly cloudy, with a low around 67. Calm wind becoming north 5 to 8 mph after midnight.
Saturday
Sunny, with a high near 82. North wind 5 to 13 mph.
Saturday Night
Partly cloudy, with a low around 67.
Sunday
A 40 percent chance of showers after 2pm. Partly sunny, with a high near 82.
Sunday Night
Showers, mainly after 8pm. Low around 71. Chance of precipitation is 80%.
Monday
Showers likely before 8am. Partly sunny, with a high near 85. Chance of precipitation is 60%.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
Sunny, with a high near 83.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Setauket-East Setauket NY
40.94°N 73.11°W (Elev. 52 ft)
40.94°N 73.11°W (Elev. 52 ft)
4:30 am EDT Aug 13, 2026
7am EDT Aug 13, 2026-6pm EDT Aug 19, 2026


