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

35°F

2°C

Humidity 96%
Wind Speed W 12 mph
Barometer 30.06 in (1018.0 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 17 Jan 4:56 pm EST
Extended Forecast for

Mastic NY

Winter Weather Advisory January 18, 10:00am until January 18, 10:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: A 30 percent chance of snow, mainly after 4am. Increasing clouds, with a low around 29. West wind around 6 mph becoming calm in the evening.

    Low: 29 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: Periods of rain and snow, becoming all snow after 11am. High near 35. Calm wind becoming northeast 5 to 7 mph in the afternoon. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    High: 35 °F

    Rain/Snow
    then Snow

  • Sunday Night

    Sunday Night: A 50 percent chance of snow before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 22. Calm wind becoming northwest around 5 mph after midnight.

    Low: 22 °F

    Chance Snow

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 34. Wind chill values between 15 and 25. West wind 6 to 14 mph, with gusts as high as 24 mph.

    High: 34 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 16. West wind around 10 mph, with gusts as high as 24 mph.

    Low: 16 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 25.

    High: 25 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 13.

    Low: 13 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 28 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of snow, mainly after 4am. Increasing clouds, with a low around 29. West wind around 6 mph becoming calm in the evening.
Sunday
Periods of rain and snow, becoming all snow after 11am. High near 35. Calm wind becoming northeast 5 to 7 mph in the afternoon. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Sunday Night
A 50 percent chance of snow before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 22. Calm wind becoming northwest around 5 mph after midnight.
M.L.King Day
Mostly sunny, with a high near 34. Wind chill values between 15 and 25. West wind 6 to 14 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around 16. West wind around 10 mph, with gusts as high as 24 mph.
Tuesday
Mostly sunny, with a high near 25.
Tuesday Night
Mostly clear, with a low around 13.
Wednesday
Mostly sunny, with a high near 39.
Wednesday Night
Mostly cloudy, with a low around 28.
Thursday
Partly sunny, with a high near 39.
Thursday Night
Partly cloudy, with a low around 20.
Friday
Mostly sunny, with a high near 34.
Friday Night
Partly cloudy, with a low around 22.
Saturday
Partly sunny, with a high near 33.
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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:
5:41 pm EST Jan 17, 2026
Forecast Valid:
5pm EST Jan 17, 2026-6pm EST Jan 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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