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Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
66°F
19°C
| Humidity | 78% |
| Wind Speed | SW 5 mph |
| Barometer | 30.00 in (1015.8 mb) |
| Dewpoint | 59°F (15°C) |
| Visibility | 10.00 mi |
| Last update | 6 Sep 7:56 pm EDT |
Extended Forecast for
Lake Grove NY
Tonight
Low: 57 °F
Mostly Clear
Labor Day
High: 77 °F
Sunny
Monday Night
Low: 60 °F
Mostly Clear
Tuesday
High: 80 °F
Sunny
Tuesday Night
Low: 64 °F
Partly Cloudy
Wednesday
High: 79 °F
Mostly Sunny
Wednesday Night
Low: 70 °F
Mostly Cloudy
Thursday
High: 84 °F
Mostly Sunny
Thursday Night
Low: 64 °F
Chance
Showers
Detailed Forecast
Tonight
Mostly clear, with a low around 57. Light and variable wind.
Labor Day
Sunny, with a high near 77. Northwest wind 6 to 9 mph.
Monday Night
Mostly clear, with a low around 60. Light northwest wind.
Tuesday
Sunny, with a high near 80. Northwest wind 3 to 6 mph.
Tuesday Night
Partly cloudy, with a low around 64. Light southwest wind.
Wednesday
Mostly sunny, with a high near 79.
Wednesday Night
Mostly cloudy, with a low around 70.
Thursday
Mostly sunny, with a high near 84.
Thursday Night
A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 60.
Saturday
Sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 63.
Sunday
Mostly sunny, with a high near 79.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Lake Grove NY
40.85°N 73.1°W (Elev. 144 ft)
40.85°N 73.1°W (Elev. 144 ft)
2:24 pm EDT Sep 6, 2026
8pm EDT Sep 6, 2026-6pm EDT Sep 13, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
