Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
62°F
17°C
| Humidity | 62% |
| Wind Speed | E 12 mph |
| Barometer | 30.26 in (1024.6 mb) |
| Dewpoint | 49°F (9°C) |
| Visibility | 10.00 mi |
| Last update | 4 Oct 10:56 am EDT |
Extended Forecast for
Stony Brook NY
Today
High: 63 °F
Showers
Tonight
Low: 56 °F
Showers
Likely then
Mostly CloudyMonday
High: 67 °F
Becoming
SunnyMonday Night
Low: 47 °F
Clear
Tuesday
High: 60 °F
Sunny
Tuesday Night
Low: 51 °F
Clear
Wednesday
High: 64 °F
Sunny
Wednesday Night
Low: 56 °F
Mostly Clear
Thursday
High: 69 °F
Sunny
Detailed Forecast
Today
Showers, mainly after noon. High near 63. East wind around 11 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 56. Northeast wind 5 to 8 mph becoming northwest after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly cloudy through mid morning, then gradual clearing, with a high near 67. Northwest wind 8 to 18 mph.
Monday Night
Clear, with a low around 47. Northwest wind 14 to 16 mph.
Tuesday
Sunny, with a high near 60. West wind around 10 mph.
Tuesday Night
Clear, with a low around 51.
Wednesday
Sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Sunny, with a high near 69.
Thursday Night
Mostly clear, with a low around 55.
Friday
Sunny, with a high near 67.
Friday Night
Partly cloudy, with a low around 55.
Saturday
Mostly sunny, with a high near 65.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Stony Brook NY
40.92°N 73.12°W (Elev. 112 ft)
40.92°N 73.12°W (Elev. 112 ft)
10:11 am EDT Oct 4, 2026
11am EDT Oct 4, 2026-6pm EDT Oct 10, 2026
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