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

47°F

8°C

Humidity 97%
Wind Speed SE 7 mph
Barometer 29.95 in (1014.3 mb)
Dewpoint 46°F (8°C)
Visibility 1.75 mi
Wind Chill44°F (7°C)
Last update 19 Apr 12:56 am EDT
Extended Forecast for

Mastic NY

  • Overnight

    Overnight: Areas of fog. Otherwise, cloudy, with a low around 46. Light southeast wind.

    Low: 46 °F

    Areas Fog

  • Sunday

    Sunday: Showers, mainly before 5pm. Patchy fog before 11am. High near 56. Southeast wind 6 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 56 °F

    Showers and
    Patchy Fog

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 38. West wind 3 to 6 mph.

    Low: 38 °F

    Chance
    Showers then
    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers. Mostly sunny, with a high near 51. Northwest wind 7 to 9 mph.

    High: 51 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 33. North wind around 7 mph.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 39.

    Low: 39 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 58.

    High: 58 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Overnight
Areas of fog. Otherwise, cloudy, with a low around 46. Light southeast wind.
Sunday
Showers, mainly before 5pm. Patchy fog before 11am. High near 56. Southeast wind 6 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A 30 percent chance of showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 38. West wind 3 to 6 mph.
Monday
A 20 percent chance of showers. Mostly sunny, with a high near 51. Northwest wind 7 to 9 mph.
Monday Night
Partly cloudy, with a low around 33. North wind around 7 mph.
Tuesday
Sunny, with a high near 50.
Tuesday Night
Increasing clouds, with a low around 39.
Wednesday
Mostly cloudy, with a high near 58.
Wednesday Night
Partly cloudy, with a low around 41.
Thursday
Sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 44.
Friday
Mostly sunny, with a high near 60.
Friday Night
Partly cloudy, with a low around 44.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 58.
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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:
6:34 pm EDT Apr 18, 2026
Forecast Valid:
1am EDT Apr 19, 2026-6pm EDT Apr 25, 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