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.

Fog/Mist

35°F

2°C

Humidity 93%
Wind Speed SW 10 mph
Barometer 30.15 in (1021.2 mb)
Dewpoint 33°F (1°C)
Visibility 5.00 mi
Wind Chill27°F (-3°C)
Last update 17 Feb 9:56 am EST
Extended Forecast for

Mastic NY

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 42. Southwest wind 7 to 9 mph.

    High: 42 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Increasing clouds, with a low around 30. Light west wind.

    Low: 30 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Rain. High near 42. Calm wind becoming south around 6 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 42 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 4am, then a slight chance of snow. Mostly cloudy, with a low around 30. Light north wind. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 30 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Thursday

    Thursday: Mostly cloudy, with a high near 39. Light and variable wind becoming northeast 5 to 7 mph.

    High: 39 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy
    then Chance
    Snow

  • Friday

    Friday: Rain. High near 40. Chance of precipitation is 80%.

    High: 40 °F

    Rain

  • Friday Night

    Friday Night: A chance of rain before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 50%.

    Low: 30 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Saturday

    Saturday: A chance of rain and snow before 1pm. Mostly cloudy, with a high near 39. Chance of precipitation is 30%.

    High: 39 °F

    Chance
    Rain/Snow

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 42. Southwest wind 7 to 9 mph.
Tonight
Increasing clouds, with a low around 30. Light west wind.
Wednesday
Rain. High near 42. Calm wind becoming south around 6 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain likely before 4am, then a slight chance of snow. Mostly cloudy, with a low around 30. Light north wind. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday
Mostly cloudy, with a high near 39. Light and variable wind becoming northeast 5 to 7 mph.
Thursday Night
A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 28.
Friday
Rain. High near 40. Chance of precipitation is 80%.
Friday Night
A chance of rain before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 50%.
Saturday
A chance of rain and snow before 1pm. Mostly cloudy, with a high near 39. Chance of precipitation is 30%.
Saturday Night
A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 27.
Sunday
A 50 percent chance of snow. Partly sunny, with a high near 36.
Sunday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 24.
Monday
A 30 percent chance of snow. Partly sunny, with a high near 35.
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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:
4:22 am EST Feb 17, 2026
Forecast Valid:
10am EST Feb 17, 2026-6pm EST Feb 23, 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