Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Partly Cloudy
84°F
29°C
| Humidity | 37% |
| Wind Speed | W 20 G 29 mph |
| Barometer | 29.90 in (1012.4 mb) |
| Dewpoint | 55°F (13°C) |
| Visibility | 10.00 mi |
| Heat Index | 83°F (28°C) |
| Last update | 20 Jun 2:56 pm EDT |
Extended Forecast for
North Great River NY
Extreme Heat Watch June 22, 12:00pm until June 24, 08:00pm
Tonight
Low: 66 °F
Partly Cloudy
Saturday
High: 83 °F
Sunny
Saturday Night
Low: 68 °F
Partly Cloudy
Sunday
High: 86 °F
Partly Sunny
Sunday Night
Low: 73 °F
Mostly Clear
Monday
High: 92 °F
Sunny
Monday Night
Low: 72 °F
Mostly Clear
Tuesday
High: 94 °F
Sunny
Tuesday Night
Low: 72 °F
Partly Cloudy
Detailed Forecast
Tonight
Partly cloudy, with a low around 66. West wind 11 to 16 mph becoming light after midnight.
Saturday
Sunny, with a high near 83. Calm wind becoming south 5 to 9 mph in the morning.
Saturday Night
Partly cloudy, with a low around 68. Southwest wind around 6 mph.
Sunday
Partly sunny, with a high near 86. Southwest wind 9 to 14 mph.
Sunday Night
Mostly clear, with a low around 73. Southwest wind 5 to 8 mph.
Monday
Sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 72.
Tuesday
Sunny, with a high near 94.
Tuesday Night
Partly cloudy, with a low around 72.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Partly sunny, with a high near 79.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 67.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 81.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
North Great River NY
40.74°N 73.16°W (Elev. 7 ft)
40.74°N 73.16°W (Elev. 7 ft)
2:23 pm EDT Jun 20, 2025
3pm EDT Jun 20, 2025-6pm EDT Jun 27, 2025
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