Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds and Breezy
27°F
-3°C
| Humidity | 53% |
| Wind Speed | NW 21 G 28 mph |
| Barometer | 30.12 in (1020.0 mb) |
| Dewpoint | 12°F (-11°C) |
| Visibility | 10.00 mi |
| Wind Chill | 13°F (-11°C) |
| Last update | 25 Dec 11:56 pm EST |
Extended Forecast for
Commack NY
Winter Storm Warning December 26, 04:00pm until December 27, 01:00pm
Overnight
Low: 18 °F
Mostly Clear
Friday
High: 31 °F
Mostly Sunny
then Chance
SnowFriday Night
Low: 24 °F⇑
Heavy Snow
Saturday
High: 33 °F
Snow Likely
Saturday Night
Low: 20 °F
Mostly Cloudy
Sunday
High: 39 °F
Mostly Cloudy
Sunday Night
Low: 29 °F
Rain
Monday
High: 47 °F
Rain
Monday Night
Low: 24 °F
Mostly Cloudy
Detailed Forecast
Overnight
Mostly clear, with a low around 18. Wind chill values between 10 and 15. North wind around 9 mph, with gusts as high as 23 mph.
Friday
A 50 percent chance of snow after 4pm. Increasing clouds, with a high near 31. Wind chill values between 5 and 15. North wind 5 to 9 mph becoming northeast in the afternoon.
Friday Night
Snow, mainly after 7pm. The snow could be heavy at times. Temperature falling to near 24 by 8pm, then rising to around 29 during the remainder of the night. Wind chill values between 15 and 20. Light east wind increasing to 5 to 9 mph in the evening. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Saturday
Snow likely, mainly before 1pm. Mostly cloudy, with a high near 33. Wind chill values between 20 and 25. North wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday Night
Mostly cloudy, with a low around 20. North wind 3 to 5 mph.
Sunday
Mostly cloudy, with a high near 39.
Sunday Night
Rain. Low around 29. Chance of precipitation is 80%.
Monday
Rain. High near 47. Chance of precipitation is 80%.
Monday Night
Mostly cloudy, with a low around 24.
Tuesday
Mostly sunny, with a high near 32. Breezy.
Tuesday Night
Mostly cloudy, with a low around 23.
Wednesday
Mostly sunny, with a high near 35.
Wednesday Night
Mostly cloudy, with a low around 23.
New Year's Day
Mostly cloudy, with a high near 34.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Commack NY
40.85°N 73.28°W (Elev. 144 ft)
40.85°N 73.28°W (Elev. 144 ft)
1:14 pm EST Dec 25, 2025
12am EST Dec 26, 2025-6pm EST Jan 1, 2026
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