National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Shirley, Brookhaven Airport (KHWV)

Lat: 40.82°NLon: 72.87°WElev: 82ft.

Fair

77°F

25°C

Humidity 52%
Wind Speed W 10 mph
Barometer 29.62 in (1002.7 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 19 Jun 1:56 am EDT
Extended Forecast for

Mastic NY

  • Overnight

    Overnight: Mostly cloudy, with a low around 69. West wind around 10 mph, with gusts as high as 20 mph.

    Low: 69 °F

    Mostly Cloudy

  • Juneteenth

    Juneteenth: Mostly cloudy, then gradually becoming sunny, with a high near 79. Southwest wind 9 to 17 mph, with gusts as high as 29 mph.

    High: 79 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Clear, with a low around 64. West wind around 8 mph.

    Low: 64 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 83. West wind around 17 mph, with gusts as high as 29 mph.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 65. Northwest wind 3 to 6 mph.

    Low: 65 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Monday

    Monday: Showers, mainly after 2pm. High near 80. Chance of precipitation is 80%.

    High: 80 °F

    Chance
    Showers then
    Showers

  • Monday Night

    Monday Night: Showers, mainly before 2am. Low around 66. Chance of precipitation is 80%.

    Low: 66 °F

    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 69. West wind around 10 mph, with gusts as high as 20 mph.
Juneteenth
Mostly cloudy, then gradually becoming sunny, with a high near 79. Southwest wind 9 to 17 mph, with gusts as high as 29 mph.
Friday Night
Clear, with a low around 64. West wind around 8 mph.
Saturday
Sunny, with a high near 83. West wind around 17 mph, with gusts as high as 29 mph.
Saturday Night
Mostly clear, with a low around 65. Northwest wind 3 to 6 mph.
Sunday
Sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 65.
Monday
Showers, mainly after 2pm. High near 80. Chance of precipitation is 80%.
Monday Night
Showers, mainly before 2am. Low around 66. Chance of precipitation is 80%.
Tuesday
A 30 percent chance of showers before 2pm. Partly sunny, with a high near 83.
Tuesday Night
Partly cloudy, with a low around 66.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Mostly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mastic NY
 40.8°N 72.85°W (Elev. 39 ft)
Last Update:
4:34 pm EDT Jun 18, 2026
Forecast Valid:
2am EDT Jun 19, 2026-6pm EDT Jun 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