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Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair
45°F
7°C
| Humidity | 26% |
| Wind Speed | Vrbl 5 mph |
| Barometer | 30.33 in (1027.2 mb) |
| Dewpoint | 12°F (-11°C) |
| Visibility | 10.00 mi |
| Wind Chill | 42°F (6°C) |
| Last update | 24 Mar 2:56 pm EDT |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Tonight

Low: 30 °F
Increasing
CloudsWednesday

High: 49 °F
Partly Sunny
Wednesday Night

Low: 39 °F
Cloudy
Thursday

High: 58 °F
Mostly Cloudy
Thursday Night
Low: 46 °F
Slight Chance
Rain then
RainFriday
High: 55 °F
Rain Likely
then Mostly
CloudyFriday Night

Low: 28 °F
Partly Cloudy
Saturday

High: 42 °F
Sunny
Saturday Night

Low: 30 °F
Partly Cloudy
Detailed Forecast
Tonight
Increasing clouds, with a low around 30. Southwest wind 5 to 13 mph.
Wednesday
Partly sunny, with a high near 49. West wind 3 to 8 mph.
Wednesday Night
Cloudy, with a low around 39. South wind around 6 mph.
Thursday
Mostly cloudy, with a high near 58. Southwest wind 7 to 14 mph.
Thursday Night
Rain, mainly after 2am. Low around 46. Southwest wind around 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain likely, mainly before 8am. Mostly cloudy, with a high near 55. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Partly cloudy, with a low around 28.
Saturday
Sunny, with a high near 42.
Saturday Night
Partly cloudy, with a low around 30.
Sunday
Sunny, with a high near 47.
Sunday Night
Partly cloudy, with a low around 36.
Monday
Partly sunny, with a high near 52.
Monday Night
Partly cloudy, with a low around 38.
Tuesday
Partly sunny, with a high near 53.
Additional Forecasts and Information
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ABOUT 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)
2:08 pm EDT Mar 24, 2026
3pm EDT Mar 24, 2026-6pm EDT Mar 31, 2026


