Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Light Rain Snow Fog/Mist
37°F
3°C
| Humidity | 89% |
| Wind Speed | NW 15 G 22 mph |
| Barometer | 29.79 in (1008.6 mb) |
| Dewpoint | 34°F (1°C) |
| Visibility | 6.00 mi |
| Wind Chill | 28°F (-2°C) |
| Last update | 12 Mar 3:56 pm EDT |
Extended Forecast for
2 Miles NNW Stony Brook NY
This Afternoon

High: 38 °F
Rain/Snow
Tonight
Low: 31 °F
Snow then
Mostly ClearFriday

High: 46 °F
Increasing
CloudsFriday Night

Low: 38 °F
Decreasing
CloudsSaturday

High: 49 °F
Sunny and
BreezySaturday Night

Low: 33 °F
Increasing
CloudsSunday

High: 48 °F
Mostly Cloudy
Sunday Night
Low: 40 °F
Chance Rain
then RainMonday

High: 57 °F
Rain and
Breezy
Detailed Forecast
This Afternoon
Rain and snow, becoming all snow after 5pm. Steady temperature around 38. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow before 8pm. Low around 31. Wind chill values between 25 and 30. Northwest wind 13 to 15 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Friday
Increasing clouds, with a high near 46. West wind 6 to 16 mph becoming south in the afternoon.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 38. South wind 16 to 18 mph, with gusts as high as 31 mph.
Saturday
Sunny, with a high near 49. Breezy, with a west wind 20 to 22 mph.
Saturday Night
Increasing clouds, with a low around 33.
Sunday
Mostly cloudy, with a high near 48.
Sunday Night
Rain, mainly after 2am. Low around 40. Chance of precipitation is 80%.
Monday
Rain and possibly a thunderstorm. High near 57. Breezy. Chance of precipitation is 100%.
Monday Night
Rain, mainly before 2am. Low around 36. Breezy. Chance of precipitation is 80%.
Tuesday
A 30 percent chance of rain. Mostly sunny, with a high near 44.
Tuesday Night
Partly cloudy, with a low around 27.
Wednesday
Sunny, with a high near 38.
Wednesday Night
Partly cloudy, with a low around 29.
Thursday
Partly sunny, with a high near 42.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT 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)
3:03 pm EDT Mar 12, 2026
4pm EDT Mar 12, 2026-6pm EDT Mar 19, 2026


