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

Hazardous Weather Conditions

Current conditions at

Shirley, Brookhaven Airport (KHWV)

Lat: 40.82°NLon: 72.87°WElev: 82ft.

Overcast with Haze and Breezy

30°F

-1°C

Humidity 79%
Wind Speed NW 25 G 40 mph
Barometer 29.52 in (999.7 mb)
Dewpoint 24°F (-4°C)
Visibility 1.75 mi
Wind Chill16°F (-9°C)
Last update 23 Feb 3:56 pm EST
Extended Forecast for

Mastic NY

Coastal Flood Advisory until February 23, 06:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory until February 23, 06:00pm

    NOW until 6:00pm Mon

    Coastal Flood Advisory

  • This Afternoon

    High: 33 °F

    Areas Blowing
    Snow and
    Breezy

  • Tonight

    Tonight: Areas of blowing snow. Mostly cloudy, with a low around 20. Wind chill values between 10 and 15. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 34 mph.

    Low: 20 °F

    Areas Blowing
    Snow and
    Blustery

  • Tuesday

    Tuesday: Mostly sunny, with a high near 30. Wind chill values between 10 and 20. Northwest wind 8 to 11 mph, with gusts as high as 22 mph.

    High: 30 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of snow showers between 1am and 4am, then a chance of snow after 4am. Partly cloudy, with a temperature falling to near 18 by 11pm, then rising to around 30 during the remainder of the night. Calm wind becoming south 5 to 7 mph after midnight. Chance of precipitation is 50%.

    Low: 18 °F⇑

    Partly Cloudy
    then Chance
    Snow Showers

  • Wednesday

    Wednesday: Snow, mixing with rain after 10am, then gradually ending. High near 40. Southwest wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Rain/Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of rain and snow after 1pm. Partly sunny, with a high near 37. Chance of precipitation is 50%.

    High: 37 °F

    Partly Sunny
    then Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Snow likely, mainly before 1am. Mostly cloudy, with a low around 26. Chance of precipitation is 70%.

    Low: 26 °F

    Snow Likely

Detailed Forecast

This Afternoon
Areas of blowing snow. Cloudy, with a high near 33. Wind chill values between 20 and 25. Breezy, with a northwest wind around 23 mph, with gusts as high as 37 mph.
Tonight
Areas of blowing snow. Mostly cloudy, with a low around 20. Wind chill values between 10 and 15. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 34 mph.
Tuesday
Mostly sunny, with a high near 30. Wind chill values between 10 and 20. Northwest wind 8 to 11 mph, with gusts as high as 22 mph.
Tuesday Night
A chance of snow showers between 1am and 4am, then a chance of snow after 4am. Partly cloudy, with a temperature falling to near 18 by 11pm, then rising to around 30 during the remainder of the night. Calm wind becoming south 5 to 7 mph after midnight. Chance of precipitation is 50%.
Wednesday
Snow, mixing with rain after 10am, then gradually ending. High near 40. Southwest wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Wednesday Night
Partly cloudy, with a low around 28.
Thursday
A chance of rain and snow after 1pm. Partly sunny, with a high near 37. Chance of precipitation is 50%.
Thursday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 26. Chance of precipitation is 70%.
Friday
Mostly sunny, with a high near 38.
Friday Night
Mostly clear, with a low around 26.
Saturday
Sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
Partly sunny, with a high near 39.
Sunday Night
Mostly cloudy, with a low around 20.
Monday
A chance of snow. Mostly cloudy, with a high near 32.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mastic NY
 40.82°N 72.85°W (Elev. 49 ft)
Last Update:
12:58 pm EST Feb 23, 2026
Forecast Valid:
5pm EST Feb 23, 2026-6pm EST Mar 2, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation