Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Partly Cloudy
51°F
11°C
| Humidity | 35% |
| Wind Speed | S 15 mph |
| Barometer | 30.47 in (1031.7 mb) |
| Dewpoint | 24°F (-4°C) |
| Visibility | 10.00 mi |
| Wind Chill | 46°F (8°C) |
| Last update | 12 Apr 2:56 pm EDT |
Extended Forecast for
Islip, Long Island Mac Arthur Airport NY
Tonight

Low: 46 °F
Mostly Cloudy
Monday

High: 67 °F
Mostly Cloudy
Monday Night

Low: 53 °F
Partly Cloudy
Tuesday

High: 72 °F
Mostly Sunny
Tuesday Night

Low: 55 °F
Slight Chance
ShowersWednesday

High: 75 °F
Mostly Sunny
Wednesday Night

Low: 55 °F
Chance
ShowersThursday

High: 72 °F
Partly Sunny
Thursday Night

Low: 54 °F
Mostly Cloudy
Detailed Forecast
Tonight
Mostly cloudy, with a low around 46. South wind 8 to 10 mph.
Monday
Mostly cloudy, with a high near 67. Southwest wind 14 to 17 mph, with gusts as high as 28 mph.
Monday Night
Partly cloudy, with a low around 53. Southwest wind 8 to 13 mph.
Tuesday
Mostly sunny, with a high near 72. South wind 6 to 11 mph.
Tuesday Night
A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 55. Southwest wind 7 to 10 mph.
Wednesday
Mostly sunny, with a high near 75.
Wednesday Night
A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 55.
Thursday
Partly sunny, with a high near 72.
Thursday Night
Mostly cloudy, with a low around 54.
Friday
Mostly sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 50.
Sunday
Mostly cloudy, with a high near 65.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
40.81°N 73.11°W (Elev. 98 ft)
40.81°N 73.11°W (Elev. 98 ft)
2:33 pm EDT Apr 12, 2026
3pm EDT Apr 12, 2026-6pm EDT Apr 19, 2026


