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

65°F

18°C

Humidity 87%
Wind Speed N 5 mph
Barometer 30.14 in (1020.5 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 15 Aug 6:56 am EDT
Extended Forecast for

Mastic Beach NY

  • Today

    Today: Sunny, with a high near 79. Northeast wind 6 to 8 mph becoming southeast in the afternoon.

    High: 79 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 67. South wind around 5 mph becoming calm in the evening.

    Low: 67 °F

    Mostly Clear

  • Sunday

    Sunday: A 30 percent chance of showers after 5pm. Mostly sunny, with a high near 79. Light and variable wind becoming south 9 to 14 mph in the morning.

    High: 79 °F

    Sunny then
    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely, then showers and possibly a thunderstorm after 11pm. Low around 70. Breezy, with a south wind 15 to 20 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 70 °F

    Showers and
    Breezy

  • Monday

    Monday: Showers, mainly before 8am. High near 82. South wind 10 to 15 mph becoming north in the morning. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 82 °F

    Showers then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 79. Northeast wind 6 to 8 mph becoming southeast in the afternoon.
Tonight
Mostly clear, with a low around 67. South wind around 5 mph becoming calm in the evening.
Sunday
A 30 percent chance of showers after 5pm. Mostly sunny, with a high near 79. Light and variable wind becoming south 9 to 14 mph in the morning.
Sunday Night
Showers likely, then showers and possibly a thunderstorm after 11pm. Low around 70. Breezy, with a south wind 15 to 20 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 82. South wind 10 to 15 mph becoming north in the morning. 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 69.
Tuesday
Sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 69.
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 30 percent chance of showers. Partly sunny, with a high near 81.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 67.
Friday
Mostly sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mastic Beach NY
 40.77°N 72.83°W (Elev. 13 ft)
Last Update:
2:20 am EDT Aug 15, 2026
Forecast Valid:
7am EDT Aug 15, 2026-6pm EDT Aug 21, 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