Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
23°F
-5°C
| Humidity | 68% |
| Wind Speed | W 7 mph |
| Barometer | 29.79 in (1009.0 mb) |
| Dewpoint | 14°F (-10°C) |
| Visibility | 10.00 mi |
| Wind Chill | 15°F (-9°C) |
| Last update | 2 Jan 7:56 am EST |
Extended Forecast for
Stony Brook NY
Today
High: 30 °F
Decreasing
CloudsTonight
Low: 20 °F
Partly Cloudy
Saturday
High: 31 °F
Partly Sunny
Saturday Night
Low: 23 °F
Cloudy then
Chance SnowSunday
High: 33 °F
Decreasing
CloudsSunday Night
Low: 17 °F
Partly Cloudy
Monday
High: 33 °F
Increasing
CloudsMonday Night
Low: 25 °F
Cloudy
Tuesday
High: 40 °F
Mostly Cloudy
Detailed Forecast
Today
Cloudy, then gradually becoming mostly sunny, with a high near 30. Wind chill values between 10 and 20. West wind 9 to 11 mph.
Tonight
Partly cloudy, with a low around 20. Wind chill values between 15 and 20. West wind around 9 mph.
Saturday
Partly sunny, with a high near 31. Wind chill values between 10 and 20. West wind 6 to 9 mph.
Saturday Night
A 30 percent chance of snow after 1am. Cloudy, with a low around 23. Calm wind.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 33. Light north wind becoming northwest 5 to 9 mph in the morning.
Sunday Night
Partly cloudy, with a low around 17.
Monday
Increasing clouds, with a high near 33.
Monday Night
Cloudy, with a low around 25.
Tuesday
Mostly cloudy, with a high near 40.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Mostly cloudy, with a high near 43.
Wednesday Night
Mostly cloudy, with a low around 31.
Thursday
Mostly sunny, with a high near 43.
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)
3:44 am EST Jan 2, 2026
8am EST Jan 2, 2026-6pm EST Jan 8, 2026
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