Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Partly Cloudy
69°F
21°C
| Humidity | 45% |
| Wind Speed | Calm |
| Barometer | 30.39 in (1029.0 mb) |
| Dewpoint | 47°F (8°C) |
| Visibility | 10.00 mi |
| Last update | 15 Sep 12:56 pm EDT |
Extended Forecast for
Nissequogue NY
This Afternoon
High: 71 °F
Sunny
Tonight
Low: 58 °F
Mostly Clear
Wednesday
High: 76 °F
Mostly Sunny
Wednesday Night
Low: 65 °F
Partly Cloudy
Thursday
High: 80 °F
Mostly Sunny
Thursday Night
Low: 67 °F
Mostly Cloudy
Friday
High: 79 °F
Mostly Sunny
Friday Night
Low: 59 °F
Partly Cloudy
Saturday
High: 71 °F
Mostly Sunny
Detailed Forecast
This Afternoon
Sunny, with a high near 71. East wind around 7 mph.
Tonight
Mostly clear, with a low around 58. Southeast wind 5 to 7 mph.
Wednesday
Mostly sunny, with a high near 76. Calm wind becoming southwest 5 to 7 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 65. South wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 80. Calm wind becoming south 5 to 8 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 67.
Friday
Mostly sunny, with a high near 79.
Friday Night
Partly cloudy, with a low around 59.
Saturday
Mostly sunny, with a high near 71.
Saturday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 60.
Sunday
A 50 percent chance of showers. Mostly cloudy, with a high near 77.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 62.
Monday
A 50 percent chance of showers. Mostly cloudy, with a high near 73.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Nissequogue NY
40.9°N 73.18°W (Elev. 7 ft)
40.9°N 73.18°W (Elev. 7 ft)
2:07 am EDT Sep 15, 2026
1pm EDT Sep 15, 2026-6pm EDT Sep 21, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
