Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Light Drizzle
48°F
9°C
| Humidity | 100% |
| Wind Speed | Calm |
| Barometer | 29.76 in (1007.7 mb) |
| Dewpoint | 48°F (9°C) |
| Visibility | 0.50 mi |
| Last update | 19 Apr 7:56 am EDT |
Extended Forecast for
Islip Terrace NY
Freeze Watch April 21, 12:00am until April 21, 09:00am
Today

High: 52 °F⇓
Showers and
Patchy FogTonight
Low: 39 °F
Chance
Showers then
Mostly ClearMonday

High: 52 °F
Chance
ShowersMonday Night

Low: 33 °F
Partly Cloudy
Tuesday

High: 51 °F
Sunny
Tuesday Night

Low: 40 °F
Increasing
CloudsWednesday

High: 58 °F
Partly Sunny
Wednesday Night

Low: 44 °F
Partly Cloudy
Thursday

High: 64 °F
Mostly Sunny
Detailed Forecast
Today
Showers, mainly between 11am and 5pm. Patchy fog before 11am. Temperature rising to near 52 by 10am, then falling to around 47 during the remainder of the day. South wind 5 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
A 30 percent chance of showers before 8pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 39. West wind around 6 mph becoming calm after midnight.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 52. Northwest wind 5 to 9 mph.
Monday Night
Partly cloudy, with a low around 33. North wind 6 to 8 mph.
Tuesday
Sunny, with a high near 51. North wind around 6 mph becoming southwest in the afternoon.
Tuesday Night
Increasing clouds, with a low around 40.
Wednesday
Partly sunny, with a high near 58.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Mostly sunny, with a high near 59.
Friday Night
Partly cloudy, with a low around 45.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 60.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Islip Terrace NY
40.75°N 73.18°W (Elev. 30 ft)
40.75°N 73.18°W (Elev. 30 ft)
4:26 am EDT Apr 19, 2026
8am EDT Apr 19, 2026-6pm EDT Apr 25, 2026



