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 Fog/Mist

25°F

-4°C

Humidity 88%
Wind Speed W 8 mph
Barometer 29.50 in (999.0 mb)
Dewpoint 22°F (-6°C)
Visibility 1.75 mi
Wind Chill16°F (-9°C)
Last update 7 Feb 4:56 am EST
Extended Forecast for

Brentwood NY

Wind Advisory February 7, 09:00am until February 8, 12:00am
Extreme Cold Warning February 7, 01:00pm until February 8, 01:00pm
Click here for hazard details and duration
Wind Advisory
Extreme Cold Warning

  • Overnight

    Overnight: Snow. Steady temperature around 24. Wind chill values between 15 and 20. West wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 24 °F

    Snow

  • Saturday

    Saturday: Snow, mainly before 7am. Temperature falling to around 14 by 11am. Wind chill values between -5 and 5. Blustery, with a northwest wind 17 to 24 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 23 °F⇓

    Blustery.
    Snow then
    Chance Snow

  • Saturday Night

    Saturday Night: Cloudy during the early evening, then gradual clearing, with a low around 5. Wind chill values between -5 and -10. Windy, with a northwest wind 24 to 29 mph decreasing to 17 to 22 mph after midnight. Winds could gust as high as 48 mph.

    Low: 5 °F

    Gradual
    Clearing and
    Windy

  • Sunday

    Sunday: Sunny and cold, with a high near 20. Wind chill values between -5 and -15. Northwest wind 16 to 18 mph, with gusts as high as 30 mph.

    High: 20 °F

    Cold

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 9. Northwest wind 8 to 14 mph, with gusts as high as 24 mph.

    Low: 9 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 27.

    High: 27 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 16.

    Low: 16 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Snow. Steady temperature around 24. Wind chill values between 15 and 20. West wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of less than a half inch possible.
Saturday
Snow, mainly before 7am. Temperature falling to around 14 by 11am. Wind chill values between -5 and 5. Blustery, with a northwest wind 17 to 24 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Saturday Night
Cloudy during the early evening, then gradual clearing, with a low around 5. Wind chill values between -5 and -10. Windy, with a northwest wind 24 to 29 mph decreasing to 17 to 22 mph after midnight. Winds could gust as high as 48 mph.
Sunday
Sunny and cold, with a high near 20. Wind chill values between -5 and -15. Northwest wind 16 to 18 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 9. Northwest wind 8 to 14 mph, with gusts as high as 24 mph.
Monday
Sunny, with a high near 27.
Monday Night
Partly cloudy, with a low around 16.
Tuesday
Partly sunny, with a high near 33.
Tuesday Night
Mostly cloudy, with a low around 23.
Wednesday
Partly sunny, with a high near 39.
Wednesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 23.
Thursday
Partly sunny, with a high near 33.
Thursday Night
Partly cloudy, with a low around 20.
Friday
Mostly sunny, with a high near 32.
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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:
1:33 am EST Feb 7, 2026
Forecast Valid:
5am EST Feb 7, 2026-6pm EST Feb 13, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation