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Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
76°F
24°C
Humidity | 48% |
Wind Speed | NW 7 mph |
Barometer | 29.90 in (1012.5 mb) |
Dewpoint | 55°F (13°C) |
Visibility | 10.00 mi |
Heat Index | 78°F (26°C) |
Last update | 29 Aug 5:56 pm EDT |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Tonight
Low: 56 °F
Chance
Showers then
Mostly ClearSaturday
High: 76 °F
Sunny
Saturday Night
Low: 58 °F
Mostly Clear
Sunday
High: 77 °F
Sunny
Sunday Night
Low: 59 °F
Partly Cloudy
Labor Day
High: 77 °F
Mostly Sunny
Monday Night
Low: 57 °F
Mostly Clear
Tuesday
High: 77 °F
Sunny
Tuesday Night
Low: 59 °F
Mostly Clear
Detailed Forecast
Tonight
A 30 percent chance of showers before 8pm. Mostly cloudy, then gradually becoming clear, with a low around 56. Southwest wind 6 to 8 mph becoming north in the evening.
Saturday
Sunny, with a high near 76. Northwest wind 6 to 8 mph.
Saturday Night
Mostly clear, with a low around 58. West wind around 5 mph becoming light and variable.
Sunday
Sunny, with a high near 77. North wind around 6 mph becoming calm in the afternoon.
Sunday Night
Partly cloudy, with a low around 59. Calm wind.
Labor Day
Mostly sunny, with a high near 77.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Mostly sunny, with a high near 77.
Wednesday Night
Partly cloudy, with a low around 61.
Thursday
A 30 percent chance of showers. Mostly cloudy, with a high near 76.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 61.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 75.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
40.8°N 73.09°W (Elev. 98 ft)
40.8°N 73.09°W (Elev. 98 ft)
3:04 pm EDT Aug 29, 2025
6pm EDT Aug 29, 2025-6pm EDT Sep 5, 2025