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

18°F

-8°C

Humidity 45%
Wind Speed W 9 mph
Barometer 30.41 in (1029.9 mb)
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Wind Chill7°F (-14°C)
Last update 20 Jan 6:56 pm EST
Extended Forecast for

Mastic NY

  • Tonight

    Tonight: Mostly clear, with a low around 11. Wind chill values between 5 and 10. West wind 5 to 7 mph.

    Low: 11 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 37. Wind chill values between 10 and 20. Light west wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph.

    High: 37 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after 1am. Cloudy, then gradually becoming partly cloudy, with a steady temperature around 35. Southwest wind 8 to 10 mph, with gusts as high as 24 mph.

    Low: 35 °F

    Cloudy then
    Slight Chance
    Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 44. West wind 8 to 14 mph, with gusts as high as 24 mph.

    High: 44 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 24. West wind 6 to 8 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 35.

    High: 35 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 9.

    Low: 9 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny and cold, with a high near 18.

    High: 18 °F

    Cold

  • Saturday Night

    Saturday Night: A 40 percent chance of snow after 1am. Mostly cloudy, with a low around 10.

    Low: 10 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 11. Wind chill values between 5 and 10. West wind 5 to 7 mph.
Wednesday
Increasing clouds, with a high near 37. Wind chill values between 10 and 20. Light west wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph.
Wednesday Night
A 20 percent chance of rain after 1am. Cloudy, then gradually becoming partly cloudy, with a steady temperature around 35. Southwest wind 8 to 10 mph, with gusts as high as 24 mph.
Thursday
Mostly sunny, with a high near 44. West wind 8 to 14 mph, with gusts as high as 24 mph.
Thursday Night
Mostly cloudy, with a low around 24. West wind 6 to 8 mph, with gusts as high as 20 mph.
Friday
Mostly cloudy, with a high near 35.
Friday Night
Mostly cloudy, with a low around 9.
Saturday
Partly sunny and cold, with a high near 18.
Saturday Night
A 40 percent chance of snow after 1am. Mostly cloudy, with a low around 10.
Sunday
Snow likely, mainly after 1pm. Cloudy, with a high near 23. Chance of precipitation is 60%.
Sunday Night
Snow likely. Mostly cloudy, with a low around 14. Chance of precipitation is 60%.
Monday
A 40 percent chance of snow. Partly sunny, with a high near 26.
Monday Night
Partly cloudy, with a low around 13.
Tuesday
Mostly sunny, with a high near 27.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mastic NY
 40.82°N 72.85°W (Elev. 49 ft)
Last Update:
6:01 pm EST Jan 20, 2026
Forecast Valid:
7pm EST Jan 20, 2026-6pm EST Jan 27, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation