Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Overcast
30°F
-1°C
| Humidity | 82% |
| Wind Speed | NE 12 mph |
| Barometer | 30.13 in (1020.4 mb) |
| Dewpoint | 25°F (-4°C) |
| Visibility | 10.00 mi |
| Wind Chill | 20°F (-7°C) |
| Last update | 16 Feb 8:56 am EST |
Extended Forecast for
2 Miles NNW Stony Brook NY
Washington's Birthday
High: 37 °F
Decreasing
CloudsTonight
Low: 30 °F
Partly Cloudy
then Slight
Chance SnowTuesday
High: 41 °F
Decreasing
CloudsTuesday Night
Low: 32 °F
Increasing
CloudsWednesday
High: 40 °F
Rain Likely
Wednesday Night
Low: 34 °F
Rain Likely
Thursday
High: 40 °F
Mostly Cloudy
Thursday Night
Low: 31 °F
Mostly Cloudy
then Chance
Rain/SnowFriday
High: 40 °F
Rain/Snow
Likely
Detailed Forecast
Washington's Birthday
Mostly cloudy, then gradually becoming sunny, with a high near 37. Wind chill values between 25 and 35. Northeast wind 5 to 11 mph.
Tonight
A 20 percent chance of snow after 4am. Mostly cloudy, with a low around 30. Calm wind.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 41. Southwest wind 3 to 7 mph.
Tuesday Night
Increasing clouds, with a low around 32. Light southwest wind.
Wednesday
Rain likely. Cloudy, with a high near 40. Calm wind becoming east 5 to 7 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain likely before 1am. Mostly cloudy, with a low around 34. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Mostly cloudy, with a high near 40.
Thursday Night
A chance of rain and snow after 1am. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Friday
A chance of rain and snow before 1pm, then rain likely. Mostly cloudy, with a high near 40. Chance of precipitation is 70%.
Friday Night
A chance of rain and snow. Cloudy, with a low around 32. Chance of precipitation is 50%.
Saturday
A 30 percent chance of rain. Mostly cloudy, with a high near 40.
Saturday Night
Mostly cloudy, with a low around 30.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 30%.
Additional Forecasts and Information
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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)
2:01 am EST Feb 16, 2026
9am EST Feb 16, 2026-6pm EST Feb 22, 2026
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