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Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
65°F
18°C
| Humidity | 56% |
| Wind Speed | SW 13 G 21 mph |
| Barometer | 30.00 in (1015.9 mb) |
| Dewpoint | 49°F (9°C) |
| Visibility | 10.00 mi |
| Last update | 31 Mar 1:56 pm EDT |
Extended Forecast for
2 Miles NNW Stony Brook NY
This Afternoon
High: 73 °F
Mostly Sunny
Tonight
Low: 54 °F
Partly Cloudy
then Chance
ShowersWednesday
High: 68 °F
Chance Rain
then Rain
LikelyWednesday Night
Low: 42 °F
Rain
Thursday
High: 47 °F
Chance Rain
Thursday Night
Low: 41 °F
Chance Rain
Friday
High: 60 °F
Mostly Cloudy
Friday Night
Low: 51 °F
Mostly Cloudy
Saturday
High: 65 °F
Partly Sunny
Detailed Forecast
This Afternoon
Mostly sunny, with a high near 73. Southwest wind around 15 mph.
Tonight
A 30 percent chance of showers, mainly after 5am. Mostly cloudy, with a low around 54. South wind around 15 mph.
Wednesday
A chance of showers before 8am, then a chance of rain between 8am and 2pm, then rain likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 68. Southwest wind 9 to 13 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Rain and possibly a thunderstorm. Low around 42. Northeast wind 8 to 13 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A 30 percent chance of rain, mainly before 2pm. Cloudy, with a high near 47. Northeast wind around 14 mph.
Thursday Night
A chance of rain between 8pm and 2am. Cloudy, with a low around 41. Chance of precipitation is 30%.
Friday
Mostly cloudy, with a high near 60.
Friday Night
Mostly cloudy, with a low around 51.
Saturday
Partly sunny, with a high near 65.
Saturday Night
A 40 percent chance of rain after 8pm. Mostly cloudy, with a low around 48.
Sunday
A 40 percent chance of rain. Mostly cloudy, with a high near 63.
Sunday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 44.
Monday
A 30 percent chance of rain. Partly sunny, with a high near 52.
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)
10:11 am EDT Mar 31, 2026
2pm EDT Mar 31, 2026-6pm EDT Apr 6, 2026
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