Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Overcast
36°F
2°C
| Humidity | 89% |
| Wind Speed | NE 6 mph |
| Barometer | 30.42 in (1030.1 mb) |
| Dewpoint | 33°F (1°C) |
| Visibility | 10.00 mi |
| Wind Chill | 31°F (-1°C) |
| Last update | 6 Mar 9:56 pm EST |
Extended Forecast for
2 Miles NNW Stony Brook NY
Tonight
Low: 34 °F
Cloudy then
Chance
DrizzleSaturday
High: 49 °F
Chance
Drizzle then
CloudySaturday Night
Low: 43 °F
Chance
Showers then
Showers
Likely and
Areas Dense
FogSunday

High: 58 °F
Chance
Showers and
Areas FogSunday Night

Low: 39 °F
Mostly Clear
Monday

High: 57 °F
Sunny
Monday Night

Low: 43 °F
Partly Cloudy
Tuesday

High: 59 °F
Mostly Sunny
Tuesday Night
Low: 43 °F
Partly Cloudy
then Chance
Rain
Detailed Forecast
Tonight
A chance of drizzle after 4am. Cloudy, with a low around 34. Northeast wind around 5 mph becoming calm in the evening.
Saturday
A chance of drizzle before 7am. Cloudy, with a high near 49. Calm wind becoming south 5 to 7 mph in the morning.
Saturday Night
A chance of showers and thunderstorms, then showers likely after 1am. Areas of dense fog after 1am. Otherwise, cloudy, with a low around 43. Southwest wind 8 to 11 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A 30 percent chance of showers before 1pm. Areas of fog before 1pm. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 58. West wind 8 to 10 mph.
Sunday Night
Mostly clear, with a low around 39. West wind around 6 mph.
Monday
Sunny, with a high near 57.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 59.
Tuesday Night
A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 43.
Wednesday
A 50 percent chance of rain. Cloudy, with a high near 55.
Wednesday Night
Rain likely. Cloudy, with a low around 39. Chance of precipitation is 60%.
Thursday
A 40 percent chance of rain. Mostly cloudy, with a high near 47.
Thursday Night
Mostly cloudy, with a low around 31.
Friday
Mostly cloudy, with a high near 45.
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)
12:51 pm EST Mar 6, 2026
10pm EST Mar 6, 2026-6pm EDT Mar 13, 2026


