Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Overcast
73°F
23°C
| Humidity | 71% |
| Wind Speed | S 13 G 21 mph |
| Barometer | 29.97 in (1014.8 mb) |
| Dewpoint | 63°F (17°C) |
| Visibility | 10.00 mi |
| Last update | 16 Aug 10:56 pm EDT |
Extended Forecast for
East Setauket NYSimilar City Names
Tonight
Low: 69 °F
Showers
Monday
High: 80 °F
Showers
Likely then
Chance
ShowersMonday Night
Low: 69 °F
Slight Chance
ShowersTuesday
High: 84 °F
Becoming
SunnyTuesday Night
Low: 68 °F
Mostly Clear
Wednesday
High: 86 °F
Sunny
Wednesday Night
Low: 70 °F
Partly Cloudy
Thursday
High: 81 °F
Chance
Showers then
Chance
T-stormsThursday Night
Low: 65 °F
Chance
T-storms then
Partly Cloudy
Detailed Forecast
Tonight
Showers, with thunderstorms also possible after 2am. Low around 69. South wind 11 to 13 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Showers likely and possibly a thunderstorm before 11am, then a chance of showers between 11am and 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 80. Southeast wind 6 to 9 mph becoming northwest in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Monday Night
A slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 69. Northeast wind 3 to 6 mph. Chance of precipitation is 20%.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 84. North wind 5 to 8 mph.
Tuesday Night
Mostly clear, with a low around 68. West wind 3 to 5 mph.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 70.
Thursday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 50%.
Thursday Night
A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 79.
Friday Night
Mostly cloudy, with a low around 65.
Saturday
Partly sunny, with a high near 79.
Saturday Night
Mostly cloudy, with a low around 66.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 80.
Additional Forecasts and Information
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Point Forecast:
East Setauket NYSimilar City Names
40.94°N 73.11°W (Elev. 52 ft)
40.94°N 73.11°W (Elev. 52 ft)
2:20 pm EDT Aug 16, 2026
11pm EDT Aug 16, 2026-6pm EDT Aug 23, 2026
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