Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Overcast
43°F
6°C
| Humidity | 80% |
| Wind Speed | S 7 mph |
| Barometer | 30.20 in (1022.6 mb) |
| Dewpoint | 37°F (3°C) |
| Visibility | 10.00 mi |
| Wind Chill | 39°F (4°C) |
| Last update | 22 Apr 3:56 am EDT |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Overnight

Low: 40 °F
Showers
LikelyWednesday
High: 51 °F
Showers
Likely then
Chance
ShowersWednesday Night

Low: 42 °F
Mostly Cloudy
Thursday

High: 67 °F
Mostly Sunny
Thursday Night

Low: 45 °F
Mostly Cloudy
Friday

High: 59 °F
Partly Sunny
Friday Night

Low: 44 °F
Partly Cloudy
Saturday

High: 53 °F
Chance
ShowersSaturday Night

Low: 41 °F
Chance
Showers
Detailed Forecast
Overnight
Showers likely. Cloudy, with a low around 40. South wind around 10 mph. Chance of precipitation is 70%.
Wednesday
Showers likely, mainly before 11am. Cloudy, with a high near 51. South wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly cloudy, with a low around 42. Calm wind.
Thursday
Mostly sunny, with a high near 67. Northwest wind 3 to 8 mph.
Thursday Night
Mostly cloudy, with a low around 45. North wind around 5 mph.
Friday
Partly sunny, with a high near 59.
Friday Night
Partly cloudy, with a low around 44.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 53.
Saturday Night
A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 41.
Sunday
Partly sunny, with a high near 57.
Sunday Night
Partly cloudy, with a low around 43.
Monday
Mostly sunny, with a high near 58.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
A 50 percent chance of showers. Partly sunny, with a high near 57.
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)
2:25 am EDT Apr 22, 2026
4am EDT Apr 22, 2026-6pm EDT Apr 28, 2026


