Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair
36°F
2°C
| Humidity | 55% |
| Wind Speed | W 10 mph |
| Barometer | 30.11 in (1019.7 mb) |
| Dewpoint | 21°F (-6°C) |
| Visibility | 10.00 mi |
| Wind Chill | 29°F (-2°C) |
| Last update | 12 Jan 9:56 pm EST |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Tonight
Low: 30 °F
Mostly Clear
Tuesday
High: 45 °F
Sunny
Tuesday Night
Low: 40 °F
Mostly Cloudy
Wednesday
High: 47 °F
Cloudy
Wednesday Night
Low: 31 °F
Chance
ShowersThursday
High: 42 °F
Chance Rain
Thursday Night
Low: 19 °F
Mostly Cloudy
Friday
High: 33 °F
Mostly Sunny
Friday Night
Low: 25 °F
Mostly Cloudy
Detailed Forecast
Tonight
Mostly clear, with a low around 30. West wind around 7 mph.
Tuesday
Sunny, with a high near 45. West wind 6 to 9 mph.
Tuesday Night
Mostly cloudy, with a steady temperature around 40. Southwest wind around 8 mph, with gusts as high as 20 mph.
Wednesday
Cloudy, with a high near 47. Southwest wind 6 to 9 mph.
Wednesday Night
A 40 percent chance of showers, mainly after 1am. Cloudy, with a low around 31. Light south wind.
Thursday
A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 42.
Thursday Night
Mostly cloudy, with a low around 19.
Friday
Mostly sunny, with a high near 33.
Friday Night
Mostly cloudy, with a low around 25.
Saturday
Mostly sunny, with a high near 40.
Saturday Night
Mostly cloudy, with a low around 28.
Sunday
A 30 percent chance of rain. Partly sunny, with a high near 37.
Sunday Night
Partly cloudy, with a low around 20.
M.L.King Day
Mostly sunny, with a high near 32.
Additional Forecasts and Information
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Forecast AreaABOUT 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)
5:50 pm EST Jan 12, 2026
10pm EST Jan 12, 2026-6pm EST Jan 19, 2026
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