Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair
53°F
12°C
| Humidity | 38% |
| Wind Speed | N 10 mph |
| Barometer | 30.32 in (1026.7 mb) |
| Dewpoint | 28°F (-2°C) |
| Visibility | 10.00 mi |
| Wind Chill | 50°F (10°C) |
| Last update | 11 Apr 8:56 pm EDT |
Extended Forecast for
2 Miles NNW Stony Brook NY
Tonight

Low: 38 °F
Clear then
Patchy FrostSunday

High: 55 °F
Increasing
CloudsSunday Night

Low: 45 °F
Mostly Cloudy
Monday
High: 68 °F
Partly Sunny
then Slight
Chance
ShowersMonday Night

Low: 56 °F
Slight Chance
ShowersTuesday

High: 75 °F
Partly Sunny
Tuesday Night

Low: 55 °F
Partly Cloudy
Wednesday

High: 76 °F
Mostly Sunny
Wednesday Night

Low: 58 °F
Mostly Cloudy
Detailed Forecast
Tonight
Patchy frost between 4am and 5am. Otherwise, clear, with a low around 38. North wind 5 to 9 mph.
Sunday
Increasing clouds, with a high near 55. Northeast wind 5 to 10 mph becoming south in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Mostly cloudy, with a low around 45. South wind 11 to 13 mph.
Monday
A 20 percent chance of showers after 2pm. Partly sunny, with a high near 68. Southwest wind 11 to 17 mph.
Monday Night
A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 56. Southwest wind 8 to 15 mph.
Tuesday
Partly sunny, with a high near 75.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Mostly sunny, with a high near 76.
Wednesday Night
Mostly cloudy, with a low around 58.
Thursday
Partly sunny, with a high near 75.
Thursday Night
Mostly cloudy, with a low around 55.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 68.
Friday Night
Mostly cloudy, with a low around 51.
Saturday
Partly sunny, with a high near 64.
Additional Forecasts and Information
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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)
6:36 pm EDT Apr 11, 2026
9pm EDT Apr 11, 2026-6pm EDT Apr 18, 2026


