Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds
31°F
-1°C
| Humidity | 54% |
| Wind Speed | W 18 G 30 mph |
| Barometer | 30.03 in (1017.1 mb) |
| Dewpoint | 16°F (-9°C) |
| Visibility | 10.00 mi |
| Wind Chill | 19°F (-7°C) |
| Last update | 19 Jan 9:56 pm EST |
Extended Forecast for
Lake Grove NY
Tonight

Low: 16 °F
Mostly Clear
Tuesday

High: 22 °F
Sunny
Tuesday Night

Low: 12 °F
Mostly Clear
Wednesday

High: 37 °F
Increasing
CloudsWednesday Night

Low: 35 °F
Mostly Cloudy
Thursday

High: 42 °F
Mostly Sunny
Thursday Night

Low: 24 °F
Partly Cloudy
Friday

High: 32 °F
Partly Sunny
Friday Night

Low: 10 °F
Mostly Cloudy
Detailed Forecast
Tonight
Mostly clear, with a low around 16. Wind chill values between 5 and 15. West wind 11 to 14 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 22. Wind chill values between zero and 10. West wind 11 to 15 mph, with gusts as high as 28 mph.
Tuesday Night
Mostly clear, with a low around 12. Wind chill values between 5 and 10. West wind 5 to 9 mph, with gusts as high as 22 mph.
Wednesday
Increasing clouds, with a high near 37. Wind chill values between 5 and 15. Light west wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph.
Wednesday Night
Mostly cloudy, with a steady temperature around 35. Southwest wind 8 to 10 mph, with gusts as high as 23 mph.
Thursday
Mostly sunny, with a high near 42.
Thursday Night
Partly cloudy, with a low around 24.
Friday
Partly sunny, with a high near 32.
Friday Night
Mostly cloudy, with a low around 10.
Saturday
Mostly cloudy and cold, with a high near 19.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 8.
Sunday
A 30 percent chance of snow. Mostly cloudy and cold, with a high near 19.
Sunday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 9.
Monday
Partly sunny, with a high near 23.
Additional Forecasts and Information
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ABOUT 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)
7:14 pm EST Jan 19, 2026
10pm EST Jan 19, 2026-6pm EST Jan 26, 2026


