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Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
59°F
15°C
| Humidity | 67% |
| Wind Speed | SW 10 G 25 mph |
| Barometer | 30.01 in (1016.2 mb) |
| Dewpoint | 48°F (9°C) |
| Visibility | 10.00 mi |
| Last update | 31 Mar 10:56 am EDT |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Today
High: 66 °F
Mostly Sunny
Tonight
Low: 50 °F
Mostly Cloudy
then Slight
Chance
ShowersWednesday
High: 64 °F
Chance Rain
then Rain
LikelyWednesday Night
Low: 41 °F
Rain
Thursday
High: 46 °F
Chance Rain
Thursday Night
Low: 39 °F
Chance Rain
Friday
High: 58 °F
Mostly Cloudy
Friday Night
Low: 48 °F
Mostly Cloudy
Saturday
High: 62 °F
Partly Sunny
Detailed Forecast
Today
Mostly sunny, with a high near 66. Southwest wind around 18 mph, with gusts as high as 30 mph.
Tonight
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 50. Southwest wind around 15 mph.
Wednesday
A slight chance of showers before 8am, then a chance of rain between 8am and 2pm, then rain likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 64. Southwest wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. 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 41. Northeast wind 7 to 13 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
A 30 percent chance of rain before 2pm. Cloudy, with a high near 46. East wind around 14 mph.
Thursday Night
A chance of rain between 8pm and 2am. Cloudy, with a low around 39. Chance of precipitation is 30%.
Friday
Mostly cloudy, with a high near 58.
Friday Night
Mostly cloudy, with a low around 48.
Saturday
Partly sunny, with a high near 62.
Saturday Night
A 30 percent chance of rain after 8pm. Mostly cloudy, with a low around 46.
Sunday
A 40 percent chance of rain. Mostly cloudy, with a high near 60.
Sunday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 43.
Monday
A 30 percent chance of rain. Partly sunny, with a high near 51.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
40.78°N 73.09°W (Elev. 49 ft)
40.78°N 73.09°W (Elev. 49 ft)
10:11 am EDT Mar 31, 2026
11am EDT Mar 31, 2026-6pm EDT Apr 6, 2026
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