Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds
26°F
-3°C
| Humidity | 55% |
| Wind Speed | NW 14 G 22 mph |
| Barometer | 29.86 in (1011.4 mb) |
| Dewpoint | 12°F (-11°C) |
| Visibility | 10.00 mi |
| Wind Chill | 14°F (-10°C) |
| Last update | 24 Feb 9:56 am EST |
Extended Forecast for
Lake Grove NY
Today
High: 32 °F
Partly Sunny
Tonight
Low: 19 °F⇑
Mostly Clear
then Snow
LikelyWednesday
High: 39 °F
Rain/Snow
LikelyWednesday Night
Low: 29 °F
Partly Cloudy
Thursday
High: 37 °F
Partly Sunny
then Chance
Rain/SnowThursday Night
Low: 27 °F
Snow Likely
Friday
High: 36 °F
Mostly Sunny
Friday Night
Low: 26 °F
Mostly Clear
Saturday
High: 41 °F
Mostly Sunny
Detailed Forecast
Today
Sunny early, then becoming partly sunny, with a high near 32. Wind chill values between 15 and 20. Northwest wind 14 to 17 mph.
Tonight
Snow likely after 4am. Increasing clouds, with a temperature falling to near 19 by 10pm, then rising to around 30 during the remainder of the night. Wind chill values between 10 and 15. West wind 5 to 8 mph becoming calm. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Wednesday
Snow likely, possibly mixing with rain after 10am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 39. Wind chill values between 25 and 30. Southwest wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday Night
Partly cloudy, with a low around 29. Southwest wind around 6 mph.
Thursday
A chance of rain and snow after 1pm. Partly sunny, with a high near 37. West wind around 6 mph becoming southwest in the afternoon. Chance of precipitation is 50%.
Thursday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 27. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday
Mostly sunny, with a high near 36.
Friday Night
Mostly clear, with a low around 26.
Saturday
Mostly sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
Mostly sunny, with a high near 38.
Sunday Night
Partly cloudy, with a low around 16.
Monday
A 30 percent chance of snow. Mostly sunny, with a high near 29.
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)
10:52 am EST Feb 24, 2026
10am EST Feb 24, 2026-6pm EST Mar 2, 2026
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