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

34°F

1°C

Humidity 92%
Wind Speed N 6 mph
Barometer 29.86 in (1011.0 mb)
Dewpoint 32°F (0°C)
Visibility 4.00 mi
Wind Chill29°F (-2°C)
Last update 12 Mar 5:56 pm EDT
Extended Forecast for

Mastic NY

  • Tonight

    Tonight: Snow, mainly before 8pm. Low around 28. Northwest wind 7 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 28 °F

    Snow then
    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 45. Light and variable wind becoming south 8 to 13 mph in the morning.

    High: 45 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 36. South wind around 11 mph, with gusts as high as 31 mph.

    Low: 36 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 48. West wind 15 to 17 mph, with gusts as high as 31 mph.

    High: 48 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 31. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 31 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, with a high near 47.

    High: 47 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain after 2am. Low around 38. Chance of precipitation is 80%.

    Low: 38 °F

    Cloudy then
    Rain

  • Monday

    Monday: Rain and possibly a thunderstorm. High near 55. Breezy. Chance of precipitation is 100%.

    High: 55 °F

    Rain and
    Breezy

  • Monday Night

    Monday Night: Rain, mainly before 2am. Low around 33. Chance of precipitation is 80%.

    Low: 33 °F

    Rain

Detailed Forecast

Tonight
Snow, mainly before 8pm. Low around 28. Northwest wind 7 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of less than a half inch possible.
Friday
Increasing clouds, with a high near 45. Light and variable wind becoming south 8 to 13 mph in the morning.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 36. South wind around 11 mph, with gusts as high as 31 mph.
Saturday
Sunny, with a high near 48. West wind 15 to 17 mph, with gusts as high as 31 mph.
Saturday Night
Increasing clouds, with a low around 31. Northwest wind 5 to 7 mph becoming calm in the evening.
Sunday
Mostly cloudy, with a high near 47.
Sunday Night
Rain after 2am. Low around 38. Chance of precipitation is 80%.
Monday
Rain and possibly a thunderstorm. High near 55. Breezy. Chance of precipitation is 100%.
Monday Night
Rain, mainly before 2am. Low around 33. Chance of precipitation is 80%.
Tuesday
A 30 percent chance of rain before 8am. Partly sunny, with a high near 43.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
Mostly sunny, with a high near 37.
Wednesday Night
Partly cloudy, with a low around 26.
Thursday
Mostly sunny, with a high near 41.
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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:
6:03 pm EDT Mar 12, 2026
Forecast Valid:
6pm EDT Mar 12, 2026-6pm EDT Mar 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation