Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
78°F
26°C
| Humidity | 62% |
| Wind Speed | SE 8 mph |
| Barometer | 30.30 in (1026.1 mb) |
| Dewpoint | 64°F (18°C) |
| Visibility | 10.00 mi |
| Heat Index | 80°F (27°C) |
| Last update | 5 Aug 5:56 pm EDT |
Extended Forecast for
Great River NY
Tonight
Low: 66 °F
Haze
Wednesday
High: 78 °F
Haze
Wednesday Night
Low: 66 °F
Mostly Cloudy
Thursday
High: 77 °F
Mostly Sunny
Thursday Night
Low: 64 °F
Mostly Clear
Friday
High: 78 °F
Sunny
Friday Night
Low: 65 °F
Mostly Clear
Saturday
High: 79 °F
Sunny
Saturday Night
Low: 67 °F
Mostly Clear
Detailed Forecast
Tonight
Widespread haze. Mostly cloudy, with a low around 66. Southeast wind 5 to 7 mph becoming northeast after midnight.
Wednesday
Widespread haze before 2pm. Mostly cloudy, with a high near 78. East wind 7 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 66. East wind around 6 mph.
Thursday
Mostly sunny, with a high near 77. East wind 7 to 11 mph.
Thursday Night
Mostly clear, with a low around 64. East wind 3 to 6 mph.
Friday
Sunny, with a high near 78.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 67.
Sunday
Sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 70.
Monday
Mostly sunny, with a high near 83.
Monday Night
Partly cloudy, with a low around 71.
Tuesday
Mostly sunny, with a high near 84.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Great River NY
40.72°N 73.16°W (Elev. 13 ft)
40.72°N 73.16°W (Elev. 13 ft)
1:45 pm EDT Aug 5, 2025
6pm EDT Aug 5, 2025-6pm EDT Aug 12, 2025
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