Current conditions at

Shirley, Brookhaven Airport (KHWV)

Lat: 40.82°NLon: 72.87°WElev: 82ft.

A Few Clouds

73°F

23°C

Humidity 96%
Wind Speed Calm
Barometer 29.85 in (1010.6 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 14 Aug 3:56 am EDT
Extended Forecast for

Mount Sinai NY

  • Overnight

    Overnight: A 20 percent chance of showers.  Patchy fog.  Otherwise, mostly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Thursday

    Thursday: A slight chance of showers before 8am, then a chance of showers and thunderstorms after 11am.  Patchy fog before 8am.  Otherwise, mostly cloudy, with a high near 87. Calm wind becoming north around 5 mph in the afternoon.  Chance of precipitation is 50%.

    High: 87 °F

    Chance
    T-storms and
    Patchy Fog

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 69. Light and variable wind.

    Low: 69 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 85. Northeast wind 8 to 10 mph.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 67. East wind 3 to 6 mph.

    Low: 67 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Saturday Night

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

    Low: 67 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers. Patchy fog. Otherwise, mostly cloudy, with a low around 71. Calm wind.
Thursday
A slight chance of showers before 8am, then a chance of showers and thunderstorms after 11am. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 87. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 50%.
Thursday Night
Partly cloudy, with a low around 69. Light and variable wind.
Friday
Sunny, with a high near 85. Northeast wind 8 to 10 mph.
Friday Night
Partly cloudy, with a low around 67. East wind 3 to 6 mph.
Saturday
Sunny, with a high near 83.
Saturday Night
Mostly clear, with a low around 67.
Sunday
Sunny, with a high near 88.
Sunday Night
Partly cloudy, with a low around 68.
Monday
Mostly sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
Mostly sunny, with a high near 79.
Tuesday Night
Partly cloudy, with a low around 64.
Wednesday
Mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Sinai NY
 40.93°N 73°W (Elev. 141 ft)
2:20 am EDT Aug 14, 2025
4am EDT Aug 14, 2025-6pm EDT Aug 20, 2025
 
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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