Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fog/Mist
38°F
3°C
| Humidity | 89% |
| Wind Speed | W 13 mph |
| Barometer | 29.90 in (1012.5 mb) |
| Dewpoint | 35°F (2°C) |
| Visibility | 6.00 mi |
| Wind Chill | 30°F (-1°C) |
| Last update | 24 Dec 5:56 am EST |
Extended Forecast for
Lake Grove NY
Today

High: 43 °F
Sunny
Tonight

Low: 27 °F
Increasing
CloudsChristmas Day

High: 43 °F
Slight Chance
Rain/SnowThursday Night

Low: 19 °F
Partly Cloudy
Friday
High: 29 °F
Partly Sunny
then Chance
SnowFriday Night

Low: 22 °F
Snow
Saturday

High: 34 °F
Snow Likely
Saturday Night

Low: 25 °F
Mostly Cloudy
Sunday
High: 43 °F
Chance Rain
then Rain
Likely
Detailed Forecast
Today
Sunny, with a high near 43. Northwest wind 11 to 16 mph, with gusts as high as 32 mph.
Tonight
Increasing clouds, with a low around 27. North wind around 6 mph becoming calm in the evening.
Christmas Day
A slight chance of rain and snow before 1pm. Mostly cloudy, with a high near 43. Southwest wind 5 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 19. Wind chill values between 10 and 15. North wind 8 to 10 mph, with gusts as high as 22 mph.
Friday
A 30 percent chance of snow after 1pm. Mostly cloudy, with a high near 29. North wind 6 to 9 mph.
Friday Night
Snow. Low around 22. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Saturday
Snow likely before 1pm. Cloudy, with a high near 34. Chance of precipitation is 60%.
Saturday Night
Mostly cloudy, with a low around 25.
Sunday
Rain likely, mainly after 1pm. Cloudy, with a high near 43. Chance of precipitation is 60%.
Sunday Night
Rain. Low around 28. Chance of precipitation is 80%.
Monday
A 40 percent chance of rain. Partly sunny, with a high near 38.
Monday Night
Partly cloudy, with a low around 20.
Tuesday
Partly sunny, with a high near 30.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
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)
1:22 am EST Dec 24, 2025
6am EST Dec 24, 2025-6pm EST Dec 30, 2025


