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

26°F

-3°C

Humidity 46%
Wind Speed NW 9 G 22 mph
Barometer 29.79 in (1009.0 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 2 Jan 6:56 pm EST
Extended Forecast for

Mastic NY

  • Tonight

    Tonight: Partly cloudy, with a low around 17. Wind chill values between 10 and 15. Northwest wind 6 to 8 mph.

    Low: 17 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 31. Wind chill values between 10 and 20. West wind 7 to 10 mph.

    High: 31 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of snow showers between 10pm and 1am, then a chance of light snow after 1am. Cloudy, with a low around 19. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.

    Low: 19 °F

    Slight Chance
    Snow Showers
    then Chance
    Light Snow

  • Sunday

    Sunday: A 20 percent chance of light snow before 10am. Partly sunny, with a high near 33. Wind chill values between 20 and 25. Light northwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 21 mph.

    High: 33 °F

    Slight Chance
    Light Snow
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 12. Northwest wind 5 to 11 mph, with gusts as high as 21 mph.

    Low: 12 °F

    Partly Cloudy

  • Monday

    Monday: Increasing clouds, with a high near 32.

    High: 32 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Cloudy, with a low around 22.

    Low: 22 °F

    Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 43.

    High: 43 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 17. Wind chill values between 10 and 15. Northwest wind 6 to 8 mph.
Saturday
Partly sunny, with a high near 31. Wind chill values between 10 and 20. West wind 7 to 10 mph.
Saturday Night
A slight chance of snow showers between 10pm and 1am, then a chance of light snow after 1am. Cloudy, with a low around 19. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Sunday
A 20 percent chance of light snow before 10am. Partly sunny, with a high near 33. Wind chill values between 20 and 25. Light northwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 12. Northwest wind 5 to 11 mph, with gusts as high as 21 mph.
Monday
Increasing clouds, with a high near 32.
Monday Night
Cloudy, with a low around 22.
Tuesday
Mostly cloudy, with a high near 43.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Mostly cloudy, with a high near 45.
Wednesday Night
Partly cloudy, with a low around 30.
Thursday
Mostly sunny, with a high near 45.
Thursday Night
Mostly cloudy, with a low around 34.
Friday
A 30 percent chance of rain. Mostly cloudy, with a high near 47.
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:
3:52 pm EST Jan 2, 2026
Forecast Valid:
7pm EST Jan 2, 2026-6pm EST Jan 9, 2026
 
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