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

52°F

11°C

Humidity 50%
Wind Speed N 13 G 21 mph
Barometer 29.94 in (1013.9 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 15 Oct 11:56 pm EDT
Extended Forecast for

Mount Sinai NY

  • Overnight

    Overnight: Mostly clear, with a low around 44. North wind around 15 mph, with gusts as high as 25 mph.

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 57. North wind 15 to 18 mph, with gusts as high as 30 mph.

    High: 57 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 45. North wind 15 to 18 mph.

    Low: 45 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 62. North wind 13 to 15 mph.

    High: 62 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 46. North wind 7 to 11 mph.

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 55. Chance of precipitation is 60%.

    Low: 55 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 44. North wind around 15 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 57. North wind 15 to 18 mph, with gusts as high as 30 mph.
Thursday Night
Clear, with a low around 45. North wind 15 to 18 mph.
Friday
Sunny, with a high near 62. North wind 13 to 15 mph.
Friday Night
Mostly clear, with a low around 46. North wind 7 to 11 mph.
Saturday
Sunny, with a high near 63.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 68.
Sunday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 55. Chance of precipitation is 60%.
Monday
Showers likely, mainly before 8am. Partly sunny, with a high near 66. Chance of precipitation is 60%.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 51.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 65.
Tuesday Night
Mostly cloudy, with a low around 51.
Wednesday
Partly sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Sinai NY
 40.95°N 73°W (Elev. 174 ft)
Last Update:
7:56 pm EDT Oct 15, 2025
Forecast Valid:
12am EDT Oct 16, 2025-6pm EDT Oct 22, 2025
 
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