Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
13°F
-11°C
| Humidity | 33% |
| Wind Speed | NW 20 G 30 mph |
| Barometer | 30.60 in (1036.4 mb) |
| Dewpoint | -11°F (-24°C) |
| Visibility | 10.00 mi |
| Wind Chill | -5°F (-21°C) |
| Last update | 24 Jan 11:56 am EST |
Extended Forecast for
Lake Grove NY
Winter Storm Warning January 25, 03:00am until January 26, 06:00pm
This Afternoon
High: 17 °F
Cold
Tonight
Low: 14 °F
Mostly Cloudy
then Chance
SnowSunday
High: 30 °F
Heavy Snow
Sunday Night
Low: 27 °F
Snow/Sleet
Monday
High: 30 °F
Snow Likely
Monday Night
Low: 11 °F
Partly Cloudy
Tuesday
High: 21 °F
Mostly Sunny
Tuesday Night
Low: 10 °F
Partly Cloudy
Wednesday
High: 23 °F
Mostly Sunny
Detailed Forecast
This Afternoon
Mostly sunny and cold, with a high near 17. Wind chill values between zero and 10. Northwest wind 7 to 10 mph, with gusts as high as 21 mph.
Tonight
A 40 percent chance of snow after 4am. Mostly cloudy, with a steady temperature around 14. Wind chill values between 5 and 10. North wind 3 to 6 mph.
Sunday
Snow, mainly after 7am. The snow could be heavy at times. High near 30. Wind chill values between 5 and 15. Northeast wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 100%. New snow accumulation of 7 to 11 inches possible.
Sunday Night
Snow and sleet, becoming all snow after 4am. Steady temperature around 27. Wind chill values between 15 and 20. Northeast wind 10 to 14 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 3 inches possible.
Monday
Snow likely, mainly before 1pm. Cloudy, with a high near 30. North wind 8 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Monday Night
Partly cloudy, with a low around 11.
Tuesday
Mostly sunny, with a high near 21.
Tuesday Night
Partly cloudy, with a low around 10.
Wednesday
Mostly sunny, with a high near 23.
Wednesday Night
Mostly cloudy, with a low around 10.
Thursday
Partly sunny, with a high near 22.
Thursday Night
Partly cloudy, with a low around 8.
Friday
Mostly sunny, with a high near 23.
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)
1:05 am EST Jan 24, 2026
12pm EST Jan 24, 2026-6pm EST Jan 30, 2026
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