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.

A Few Clouds

78°F

26°C

Humidity 52%
Wind Speed Vrbl 3 mph
Barometer 30.19 in (1022.1 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 15 Aug 12:56 pm EDT
Extended Forecast for

Mastic NYSimilar City Names

  • This Afternoon

    This Afternoon: Sunny, with a high near 81. East wind around 6 mph.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Clear

  • Sunday

    Sunday: A 30 percent chance of showers after 5pm. Mostly sunny, with a high near 81. Light and variable wind becoming south 6 to 11 mph in the morning.

    High: 81 °F

    Sunny then
    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely, then showers and possibly a thunderstorm after 11pm. Low around 68. South wind 13 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 68 °F

    Showers

  • Monday

    Monday: Showers, mainly before 8am. High near 84. South wind 10 to 13 mph becoming north in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 84 °F

    Showers then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 81. East wind around 6 mph.
Tonight
Mostly clear, with a low around 65. Calm wind.
Sunday
A 30 percent chance of showers after 5pm. Mostly sunny, with a high near 81. Light and variable wind becoming south 6 to 11 mph in the morning.
Sunday Night
Showers likely, then showers and possibly a thunderstorm after 11pm. Low around 68. South wind 13 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
Showers, mainly before 8am. High near 84. South wind 10 to 13 mph becoming north in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 67.
Wednesday
Sunny, with a high near 83.
Wednesday Night
A 30 percent chance of showers after 2am. Partly cloudy, with a low around 70.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 83.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 65.
Friday
Mostly sunny, with a high near 79.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mastic NYSimilar City Names
 40.8°N 72.85°W (Elev. 39 ft)
Last Update:
2:20 am EDT Aug 15, 2026
Forecast Valid:
1pm EDT Aug 15, 2026-6pm EDT Aug 21, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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