Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair
29°F
-2°C
| Humidity | 89% |
| Wind Speed | Calm |
| Barometer | 30.59 in (1035.8 mb) |
| Dewpoint | 26°F (-3°C) |
| Visibility | 10.00 mi |
| Last update | 9 Apr 2:56 am EDT |
Extended Forecast for
2 Miles NNW Stony Brook NY
Overnight
Low: 33 °F
Frost
Thursday
High: 52 °F
Frost then
SunnyThursday Night
Low: 37 °F
Mostly Clear
Friday
High: 58 °F
Sunny
Friday Night
Low: 47 °F
Mostly Cloudy
then Slight
Chance
ShowersSaturday
High: 59 °F
Sunny
Saturday Night
Low: 41 °F
Mostly Clear
Sunday
High: 55 °F
Mostly Sunny
Sunday Night
Low: 46 °F
Mostly Cloudy
Detailed Forecast
Overnight
Widespread frost, mainly after 5am. Otherwise, mostly clear, with a low around 33. Calm wind.
Thursday
Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 52. South wind 3 to 7 mph.
Thursday Night
Mostly clear, with a low around 37. South wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 58. Light southwest wind becoming south 5 to 9 mph in the morning.
Friday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 47. South wind 8 to 10 mph.
Saturday
Sunny, with a high near 59.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Mostly sunny, with a high near 55.
Sunday Night
Mostly cloudy, with a low around 46.
Monday
Mostly cloudy, with a high near 66.
Monday Night
Mostly cloudy, with a low around 55.
Tuesday
Partly sunny, with a high near 73.
Tuesday Night
Mostly cloudy, with a low around 57.
Wednesday
Mostly sunny, with a high near 73.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
2 Miles NNW Stony Brook NY
40.92°N 73.15°W (Elev. 36 ft)
40.92°N 73.15°W (Elev. 36 ft)
5:30 pm EDT Apr 8, 2026
3am EDT Apr 9, 2026-6pm EDT Apr 15, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
