Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
36°F
2°C
| Humidity | 64% |
| Wind Speed | NE 15 G 20 mph |
| Barometer | 30.10 in (1019.4 mb) |
| Dewpoint | 25°F (-4°C) |
| Visibility | 10.00 mi |
| Wind Chill | 27°F (-3°C) |
| Last update | 16 Feb 12:56 pm EST |
Extended Forecast for
2 Miles NNW Stony Brook NY
Washington's Birthday
High: 37 °F
Partly Sunny
Tonight
Low: 29 °F
Partly Cloudy
then Slight
Chance
Freezing RainTuesday
High: 40 °F
Slight Chance
Freezing Rain
then Partly
SunnyTuesday Night
Low: 32 °F
Increasing
CloudsWednesday
High: 40 °F
Rain
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: 39 °F
Rain/Snow
Likely
Detailed Forecast
Washington's Birthday
Partly sunny, with a high near 37. Northeast wind 7 to 13 mph.
Tonight
A slight chance of freezing rain after 4am. Increasing clouds, with a low around 29. Calm wind. Chance of precipitation is 20%.
Tuesday
A slight chance of freezing rain before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 40. South wind 5 to 9 mph. Chance of precipitation is 20%.
Tuesday Night
Increasing clouds, with a low around 32. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
Rain. High near 40. Calm wind becoming northeast 5 to 8 mph in the morning. 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 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. Cloudy, with a high near 39. Chance of precipitation is 70%.
Friday Night
A chance of rain and snow. Cloudy, with a low around 33. 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 29.
Sunday
A chance of rain and snow. Partly sunny, with a high near 37. 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)
1:52 pm EST Feb 16, 2026
1pm EST Feb 16, 2026-6pm EST Feb 22, 2026
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