Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds
42°F
6°C
| Humidity | 38% |
| Wind Speed | NW 12 mph |
| Barometer | 30.45 in (1031.2 mb) |
| Dewpoint | 18°F (-8°C) |
| Visibility | 10.00 mi |
| Wind Chill | 35°F (2°C) |
| Last update | 29 Nov 3:56 pm EST |
Extended Forecast for
Islip NY
Tonight

Low: 31 °F
Increasing
CloudsSunday
High: 52 °F
Chance Rain
then RainSunday Night
Low: 34 °F
Slight Chance
Rain then
Mostly ClearMonday

High: 43 °F
Sunny
Monday Night
Low: 30 °F
Partly Cloudy
then Chance
RainTuesday

High: 45 °F
Rain
Tuesday Night

Low: 31 °F
Rain Likely
Wednesday

High: 42 °F
Sunny
Wednesday Night

Low: 31 °F
Partly Cloudy
Detailed Forecast
Tonight
Increasing clouds, with a low around 31. Calm wind becoming south around 6 mph after midnight.
Sunday
Rain, mainly after 1pm. High near 52. South wind 9 to 16 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A 20 percent chance of rain before 10pm. Cloudy during the early evening, then gradual clearing, with a low around 34. West wind 11 to 13 mph, with gusts as high as 23 mph.
Monday
Sunny, with a high near 43. Northwest wind 9 to 14 mph.
Monday Night
A 50 percent chance of rain after 4am. Increasing clouds, with a low around 30. North wind around 5 mph becoming light and variable in the evening.
Tuesday
Rain, mainly after 7am. High near 45. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Tuesday Night
Rain likely before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 31. Chance of precipitation is 60%.
Wednesday
Sunny, with a high near 42.
Wednesday Night
Partly cloudy, with a low around 31.
Thursday
Partly sunny, with a high near 43.
Thursday Night
Partly cloudy, with a low around 23.
Friday
Partly sunny, with a high near 39.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 28.
Saturday
A 30 percent chance of rain. Mostly cloudy, with a high near 41.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Islip NY
40.73°N 73.22°W (Elev. 7 ft)
40.73°N 73.22°W (Elev. 7 ft)
2:12 pm EST Nov 29, 2025
4pm EST Nov 29, 2025-6pm EST Dec 6, 2025


