Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

21°F

-6°C

Humidity 45%
Wind Speed W 17 G 28 mph
Barometer 29.94 in (1014.0 mb)
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill7°F (-14°C)
Last update 27 Jan 3:56 pm EST
Extended Forecast for

Brentwood NY

  • This Afternoon

    This Afternoon: A chance of flurries.  Mostly cloudy, with a high near 21. Wind chill values between 5 and 10. West wind around 14 mph, with gusts as high as 24 mph.

    High: 21 °F

    Chance
    Flurries

  • Tonight

    Tonight: A chance of flurries before 7pm.  Partly cloudy, with a low around 10. Wind chill values between zero and 5. West wind 8 to 10 mph, with gusts as high as 23 mph.

    Low: 10 °F

    Chance
    Flurries

  • Wednesday

    Wednesday: Increasing clouds, with a high near 23. Wind chill values between zero and 10. West wind 6 to 9 mph.

    High: 23 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 9. Wind chill values between zero and 5. West wind around 6 mph.

    Low: 9 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 21. West wind 6 to 10 mph.

    High: 21 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 7.

    Low: 7 °F

    Mostly Clear

  • Friday

    Friday: Sunny and cold, with a high near 19.

    High: 19 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around 4.

    Low: 4 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 22.

    High: 22 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A chance of flurries. Mostly cloudy, with a high near 21. Wind chill values between 5 and 10. West wind around 14 mph, with gusts as high as 24 mph.
Tonight
A chance of flurries before 7pm. Partly cloudy, with a low around 10. Wind chill values between zero and 5. West wind 8 to 10 mph, with gusts as high as 23 mph.
Wednesday
Increasing clouds, with a high near 23. Wind chill values between zero and 10. West wind 6 to 9 mph.
Wednesday Night
Mostly cloudy, with a low around 9. Wind chill values between zero and 5. West wind around 6 mph.
Thursday
Sunny, with a high near 21. West wind 6 to 10 mph.
Thursday Night
Mostly clear, with a low around 7.
Friday
Sunny and cold, with a high near 19.
Friday Night
Partly cloudy, with a low around 4.
Saturday
Partly sunny, with a high near 22.
Saturday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 15.
Sunday
A 50 percent chance of snow. Mostly cloudy, with a high near 28. Blustery.
Sunday Night
Mostly cloudy, with a low around 17.
Monday
Mostly sunny, with a high near 32.
Monday Night
Partly cloudy, with a low around 17.
Tuesday
Mostly sunny, with a high near 31.
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ABOUT THIS FORECAST

 
Point Forecast:
Brentwood NY
 40.78°N 73.24°W (Elev. 66 ft)
12:48 pm EST Jan 27, 2026
4pm EST Jan 27, 2026-6pm EST Feb 3, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database