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.

Fair

31°F

-1°C

Humidity 67%
Wind Speed Calm
Barometer 30.28 in (1025.3 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 24 Dec 9:56 pm EST
Extended Forecast for

Mastic NY

  • Tonight

    Tonight: Increasing clouds, with a steady temperature around 30. Calm wind.

    Low: 30 °F

    Increasing
    Clouds

  • Christmas Day

    Christmas Day: Partly sunny, with a high near 43. Southwest wind 6 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph.

    High: 43 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 19. Wind chill values between 10 and 15. Northwest wind 10 to 15 mph, with gusts as high as 26 mph.

    Low: 19 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of snow after 1pm. Increasing clouds, with a high near 30. Wind chill values between 10 and 20. North wind 6 to 9 mph becoming northeast in the afternoon.

    High: 30 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Friday Night

    Friday Night: Snow. Low around 22. Calm wind becoming east 5 to 7 mph after midnight. Chance of precipitation is 80%. New snow accumulation of 3 to 7 inches possible.

    Low: 22 °F

    Snow

  • Saturday

    Saturday: A 50 percent chance of snow before 1pm. Cloudy, with a high near 33.

    High: 33 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 21.

    Low: 21 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 39.

    High: 39 °F

    Mostly Cloudy
    then Chance
    Rain

  • Sunday Night

    Sunday Night: Rain. Low around 29. Chance of precipitation is 80%.

    Low: 29 °F

    Rain

Detailed Forecast

Tonight
Increasing clouds, with a steady temperature around 30. Calm wind.
Christmas Day
Partly sunny, with a high near 43. Southwest wind 6 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph.
Thursday Night
Partly cloudy, with a low around 19. Wind chill values between 10 and 15. Northwest wind 10 to 15 mph, with gusts as high as 26 mph.
Friday
A 20 percent chance of snow after 1pm. Increasing clouds, with a high near 30. Wind chill values between 10 and 20. North wind 6 to 9 mph becoming northeast in the afternoon.
Friday Night
Snow. Low around 22. Calm wind becoming east 5 to 7 mph after midnight. Chance of precipitation is 80%. New snow accumulation of 3 to 7 inches possible.
Saturday
A 50 percent chance of snow before 1pm. Cloudy, with a high near 33.
Saturday Night
Mostly cloudy, with a low around 21.
Sunday
A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 39.
Sunday Night
Rain. Low around 29. Chance of precipitation is 80%.
Monday
Rain likely, mainly before 1pm. Mostly cloudy, with a high near 44. Chance of precipitation is 60%.
Monday Night
Mostly cloudy, with a low around 22.
Tuesday
Partly sunny, with a high near 32.
Tuesday Night
Partly cloudy, with a low around 21.
Wednesday
Partly sunny, with a high near 36.
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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:
8:10 pm EST Dec 24, 2025
Forecast Valid:
10pm EST Dec 24, 2025-6pm EST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation