Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
30°F
-1°C
| Humidity | 92% |
| Wind Speed | SW 3 mph |
| Barometer | 30.14 in (1020.6 mb) |
| Dewpoint | 28°F (-2°C) |
| Visibility | 7.00 mi |
| Last update | 17 Feb 3:56 am EST |
Extended Forecast for
2 Miles NNW Stony Brook NY
Overnight
Low: 31 °F
Slight Chance
SnowTuesday
High: 42 °F
Decreasing
CloudsTuesday Night
Low: 32 °F
Increasing
CloudsWednesday
High: 41 °F
Rain
Wednesday Night
Low: 33 °F
Rain Likely
Thursday
High: 40 °F
Mostly Cloudy
Thursday Night
Low: 31 °F
Mostly Cloudy
then Chance
Rain/SnowFriday
High: 40 °F
Rain
Friday Night
Low: 33 °F
Chance Rain
then Chance
Rain/Snow
Detailed Forecast
Overnight
A 20 percent chance of snow. Cloudy, with a low around 31. Light southwest wind.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 42. West wind 6 to 9 mph.
Tuesday Night
Increasing clouds, with a low around 32. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
Rain. High near 41. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain likely before 1am. Mostly cloudy, with a low around 33. North wind 3 to 6 mph. 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
Rain. High near 40. Chance of precipitation is 80%.
Friday Night
A chance of rain before 1am, then a chance of rain and snow. Cloudy, with a low around 33. Chance of precipitation is 50%.
Saturday
A chance of rain and snow before 1pm. Mostly cloudy, with a high near 40. Chance of precipitation is 30%.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Sunday
A 50 percent chance of snow. Partly sunny, with a high near 37.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 27.
Monday
Partly sunny, with a high near 36.
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)
1:19 am EST Feb 17, 2026
4am EST Feb 17, 2026-6pm EST Feb 23, 2026
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