Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair
51°F
11°C
| Humidity | 80% |
| Wind Speed | Calm |
| Barometer | 30.05 in (1017.4 mb) |
| Dewpoint | 45°F (7°C) |
| Visibility | 10.00 mi |
| Last update | 9 Oct 2:56 am EDT |
Extended Forecast for
Stony Brook NY
Overnight
Low: 54 °F
Clear
Friday
High: 69 °F
Sunny
Friday Night
Low: 50 °F
Partly Cloudy
Saturday
High: 66 °F
Mostly Sunny
Saturday Night
Low: 54 °F
Mostly Cloudy
Sunday
High: 66 °F
Chance
Showers then
ShowersSunday Night
Low: 59 °F
Showers
Columbus Day
High: 68 °F
Chance
ShowersMonday Night
Low: 58 °F
Partly Cloudy
Detailed Forecast
Overnight
Clear, with a steady temperature around 54. Northwest wind around 5 mph.
Friday
Sunny, with a high near 69. West wind 6 to 11 mph, with gusts as high as 23 mph.
Friday Night
Partly cloudy, with a low around 50. Northwest wind 3 to 6 mph.
Saturday
Mostly sunny, with a high near 66. North wind 3 to 5 mph.
Saturday Night
Mostly cloudy, with a low around 54. Light southeast wind.
Sunday
Showers, mainly after 2pm. High near 66. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Showers. Low around 59. Chance of precipitation is 100%.
Columbus Day
A 30 percent chance of showers before 2pm. Mostly cloudy, with a high near 68.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 69.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Sunny, with a high near 62.
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)
2:23 am EDT Oct 9, 2026
3am EDT Oct 9, 2026-6pm EDT Oct 15, 2026
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