National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Light Snow Blowing Snow and Windy

13°F

-11°C

Humidity 61%
Wind Speed NW 26 G 40 mph
Barometer 29.64 in (1003.7 mb)
Dewpoint 2°F (-17°C)
Visibility 2.00 mi
Wind Chill-7°F (-22°C)
Last update 7 Feb 1:56 pm EST
Extended Forecast for

Brentwood NY

Wind Advisory February 7, 02:38pm until February 8, 12:00am
Extreme Cold Warning February 7, 02:38pm until February 8, 01:00pm
Click here for hazard details and duration
Wind Advisory
Extreme Cold Warning
  •  
    Wind Advisory February 7, 02:38pm until February 8, 12:00am
    Extreme Cold Warning February 7, 02:38pm until February 8, 01:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 21 °F

    Chance Snow
    and Blustery

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around 3. Wind chill values between -10 and -15. Blustery, with a northwest wind 16 to 23 mph, with gusts as high as 47 mph.

    Low: 3 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Sunday

    Sunday: Sunny and cold, with a high near 19. Wind chill values between -5 and -15. Northwest wind 14 to 16 mph, with gusts as high as 29 mph.

    High: 19 °F

    Cold

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 7. Wind chill values between -5 and zero. Northwest wind 8 to 11 mph, with gusts as high as 22 mph.

    Low: 7 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 29. Northwest wind 6 to 9 mph.

    High: 29 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 36.

    High: 36 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A 30 percent chance of snow. Cloudy, with a high near 21. Wind chill values between -5 and -10. Blustery, with a northwest wind around 22 mph, with gusts as high as 45 mph.
Tonight
Cloudy during the early evening, then gradual clearing, with a low around 3. Wind chill values between -10 and -15. Blustery, with a northwest wind 16 to 23 mph, with gusts as high as 47 mph.
Sunday
Sunny and cold, with a high near 19. Wind chill values between -5 and -15. Northwest wind 14 to 16 mph, with gusts as high as 29 mph.
Sunday Night
Mostly clear, with a low around 7. Wind chill values between -5 and zero. Northwest wind 8 to 11 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 29. Northwest wind 6 to 9 mph.
Monday Night
Mostly cloudy, with a low around 17.
Tuesday
Mostly cloudy, with a high near 36.
Tuesday Night
Mostly cloudy, with a low around 27.
Wednesday
Partly sunny, with a high near 38.
Wednesday Night
Mostly clear, with a low around 22.
Thursday
Mostly sunny, with a high near 33.
Thursday Night
Partly cloudy, with a low around 21.
Friday
Partly sunny, with a high near 33.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Brentwood NY
 40.78°N 73.24°W (Elev. 66 ft)
Last Update:
1:09 pm EST Feb 7, 2026
Forecast Valid:
2pm EST Feb 7, 2026-6pm EST Feb 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation