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

61°F

16°C

Humidity 97%
Wind Speed Calm
Barometer 30.15 in (1020.8 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 16 Aug 3:56 am EDT
Extended Forecast for

Mastic Beach NY

  • Today

    Today: Mostly sunny, with a high near 79. Light and variable wind becoming south 8 to 13 mph in the morning.

    High: 79 °F

    Mostly Sunny

  • Tonight

    Tonight: Showers, with thunderstorms also possible after 5am. Low around 69. South wind 13 to 18 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 69 °F

    Showers

  • Monday

    Monday: Showers and possibly a thunderstorm before 11am, then a chance of showers between 11am and 2pm. High near 81. South wind 9 to 17 mph becoming northwest in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 81 °F

    Showers then
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 70. North wind 3 to 6 mph.

    Low: 70 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81. North wind 5 to 7 mph becoming west in the afternoon.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers after 2am. Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A 50 percent chance of showers. Partly sunny, with a high near 80.

    High: 80 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 79. Light and variable wind becoming south 8 to 13 mph in the morning.
Tonight
Showers, with thunderstorms also possible after 5am. Low around 69. South wind 13 to 18 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Showers and possibly a thunderstorm before 11am, then a chance of showers between 11am and 2pm. High near 81. South wind 9 to 17 mph becoming northwest in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday Night
Partly cloudy, with a low around 70. North wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 81. North wind 5 to 7 mph becoming west in the afternoon.
Tuesday Night
Mostly clear, with a low around 70.
Wednesday
Sunny, with a high near 81.
Wednesday Night
A 30 percent chance of showers after 2am. Partly cloudy, with a low around 71.
Thursday
A 50 percent chance of showers. Partly sunny, with a high near 80.
Thursday Night
Partly cloudy, with a low around 66.
Friday
Mostly sunny, with a high near 78.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 67.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mastic Beach NY
 40.77°N 72.83°W (Elev. 13 ft)
Last Update:
2:19 am EDT Aug 16, 2026
Forecast Valid:
4am EDT Aug 16, 2026-6pm EDT Aug 22, 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