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 | NW 15 mph |
| Barometer | 29.64 in (1003.9 mb) |
| Dewpoint | 37°F (3°C) |
| Visibility | 10.00 mi |
| Wind Chill | 36°F (2°C) |
| Last update | 13 Nov 4:56 pm EST |
Extended Forecast for
Great River NY
Tonight
Low: 37 °F
Cloudy
Saturday
High: 47 °F
Partly Sunny
Saturday Night
Low: 39 °F
Decreasing
CloudsSunday
High: 50 °F
Sunny
Sunday Night
Low: 39 °F
Mostly Clear
Monday
High: 51 °F
Sunny
Monday Night
Low: 39 °F
Mostly Clear
Tuesday
High: 55 °F
Sunny
Tuesday Night
Low: 42 °F
Clear
Detailed Forecast
Tonight
Cloudy, with a low around 37. North wind 13 to 15 mph.
Saturday
Partly sunny, with a high near 47. Northwest wind 13 to 15 mph.
Saturday Night
Mostly cloudy, then gradually becoming clear, with a low around 39. Northwest wind around 15 mph.
Sunday
Sunny, with a high near 50. Northwest wind around 15 mph.
Sunday Night
Mostly clear, with a low around 39. Northwest wind 10 to 13 mph.
Monday
Sunny, with a high near 51.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Sunny, with a high near 55.
Tuesday Night
Clear, with a low around 42.
Wednesday
Sunny, with a high near 58.
Wednesday Night
Clear, with a low around 43.
Thursday
Sunny, with a high near 59.
Thursday Night
Mostly clear, with a low around 44.
Friday
Mostly sunny, with a high near 60.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Great River NY
40.7°N 73.17°W (Elev. 7 ft)
40.7°N 73.17°W (Elev. 7 ft)
1:17 pm EST Nov 13, 2026
5pm EST Nov 13, 2026-6pm EST Nov 20, 2026
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