Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds
25°F
-4°C
| Humidity | 50% |
| Wind Speed | NW 7 mph |
| Barometer | 29.91 in (1013.1 mb) |
| Dewpoint | 9°F (-13°C) |
| Visibility | 10.00 mi |
| Wind Chill | 17°F (-8°C) |
| Last update | 24 Feb 6:56 pm EST |
Extended Forecast for
Brentwood NY
Tonight
Low: 17 °F⇑
Mostly Clear
then Snow
LikelyWednesday
High: 40 °F
Rain/Snow
then Chance
RainWednesday Night
Low: 29 °F
Partly Cloudy
Thursday
High: 37 °F
Mostly Sunny
then Chance
SnowThursday Night
Low: 25 °F
Chance Snow
Friday
High: 37 °F
Mostly Sunny
Friday Night
Low: 28 °F
Partly Cloudy
Saturday
High: 44 °F
Mostly Sunny
Saturday Night
Low: 29 °F
Partly Cloudy
Detailed Forecast
Tonight
Snow likely after 4am. Increasing clouds, with a temperature falling to near 17 by 10pm, then rising to around 32 during the remainder of the night. Wind chill values between 10 and 15. Light and variable wind becoming south 5 to 7 mph after midnight. Chance of precipitation is 60%. Total nighttime snow accumulation of less than one inch possible.
Wednesday
Rain and snow before 11am, then a chance of rain between 11am and 1pm. High near 40. Southwest wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Wednesday Night
Partly cloudy, with a low around 29. Southwest wind around 6 mph.
Thursday
A 30 percent chance of snow, mainly after 4pm. Partly sunny, with a high near 37. Wind chill values between 25 and 35. West wind 3 to 6 mph.
Thursday Night
A 40 percent chance of snow, mainly before 4am. Mostly cloudy, with a low around 25. Light and variable wind.
Friday
Mostly sunny, with a high near 37.
Friday Night
Partly cloudy, with a low around 28.
Saturday
Mostly sunny, with a high near 44.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
Partly sunny, with a high near 40.
Sunday Night
Partly cloudy, with a low around 20.
Monday
A 40 percent chance of snow. Partly sunny, with a high near 30.
Monday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 21.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 36. Chance of precipitation is 30%.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Brentwood NY
40.78°N 73.24°W (Elev. 66 ft)
40.78°N 73.24°W (Elev. 66 ft)
4:55 pm EST Feb 24, 2026
8pm EST Feb 24, 2026-6pm EST Mar 3, 2026
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