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

Shirley, Brookhaven Airport (KHWV)

Lat: 40.82°NLon: 72.87°WElev: 82ft.

Fair

34°F

1°C

Humidity 73%
Wind Speed W 7 mph
Barometer 29.98 in (1015.4 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 4 Dec 7:56 am EST
Extended Forecast for

Mastic NY

  • Today

    Today: Partly sunny, with a high near 41. West wind 9 to 18 mph, with gusts as high as 29 mph.

    High: 41 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 16. Wind chill values between 5 and 10. Northwest wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 29 mph.

    Low: 16 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of light snow after 4pm. Increasing clouds, with a high near 36. Wind chill values between 10 and 20. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 36 °F

    Mostly Sunny
    then Slight
    Chance Light
    Snow

  • Friday Night

    Friday Night: A 40 percent chance of light snow, mainly after 7pm. Mostly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Chance Light
    Snow

  • Saturday

    Saturday: A 30 percent chance of light rain, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 42. Calm wind becoming west 5 to 8 mph in the morning.

    High: 42 °F

    Chance Light
    Rain

  • Saturday Night

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

    Low: 28 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 41. West wind 9 to 18 mph, with gusts as high as 29 mph.
Tonight
Mostly clear, with a low around 16. Wind chill values between 5 and 10. Northwest wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 29 mph.
Friday
A 20 percent chance of light snow after 4pm. Increasing clouds, with a high near 36. Wind chill values between 10 and 20. Calm wind becoming southeast around 6 mph in the afternoon.
Friday Night
A 40 percent chance of light snow, mainly after 7pm. Mostly cloudy, with a low around 28. Calm wind.
Saturday
A 30 percent chance of light rain, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 42. Calm wind becoming west 5 to 8 mph in the morning.
Saturday Night
Partly cloudy, with a low around 28.
Sunday
Partly sunny, with a high near 42.
Sunday Night
Mostly cloudy, with a low around 22.
Monday
Mostly sunny, with a high near 32.
Monday Night
Partly cloudy, with a low around 18.
Tuesday
Partly sunny, with a high near 42.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 40%.
Wednesday
A 30 percent chance of rain. Partly sunny, with a high near 46.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mastic NY
 40.82°N 72.85°W (Elev. 49 ft)
Last Update:
6:44 am EST Dec 4, 2025
Forecast Valid:
8am EST Dec 4, 2025-6pm EST Dec 10, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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