Current conditions at

Shirley, Brookhaven Airport (KHWV)

Lat: 40.82°NLon: 72.87°WElev: 82ft.

Mostly Cloudy

52°F

11°C

Humidity 89%
Wind Speed Vrbl 5 mph
Barometer 30.07 in (1018.2 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 18 Apr 7:56 am EDT
Extended Forecast for

Mount Sinai NY

Coastal Flood Advisory April 18, 11:00pm until April 19, 02:00am
Click here for hazard details and duration
...
  • Today

    Today: Mostly cloudy, with a high near 60. East wind 6 to 9 mph.

    High: 60 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 5am.  Patchy fog.  Otherwise, mostly cloudy, with a low around 46. Southeast wind 3 to 6 mph.

    Low: 46 °F

    Patchy Fog
    then Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: A chance of showers and thunderstorms before 8am, then showers and possibly a thunderstorm between 8am and 2pm, then showers after 2pm.  High near 57. South wind 5 to 14 mph becoming north in the morning.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 57 °F

    Showers

  • Sunday Night

    Sunday Night: Cloudy during the early evening, then gradual clearing, with a low around 39. West wind 6 to 8 mph.

    Low: 39 °F

    Gradual
    Clearing

  • Monday

    Monday: A 20 percent chance of showers after 2pm.  Mostly sunny, with a high near 52. Northwest wind 7 to 10 mph.

    High: 52 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 60. East wind 6 to 9 mph.
Tonight
A 30 percent chance of showers, mainly after 5am. Patchy fog. Otherwise, mostly cloudy, with a low around 46. Southeast wind 3 to 6 mph.
Sunday
A chance of showers and thunderstorms before 8am, then showers and possibly a thunderstorm between 8am and 2pm, then showers after 2pm. High near 57. South wind 5 to 14 mph becoming north in the morning. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Cloudy during the early evening, then gradual clearing, with a low around 39. West wind 6 to 8 mph.
Monday
A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 52. Northwest wind 7 to 10 mph.
Monday Night
Partly cloudy, with a low around 35.
Tuesday
Sunny, with a high near 51.
Tuesday Night
Partly cloudy, with a low around 41.
Wednesday
Partly sunny, with a high near 61.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Sunny, with a high near 62.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Sinai NY
 40.95°N 73°W (Elev. 174 ft)
8:37 am EDT Apr 18, 2026
8am EDT Apr 18, 2026-6pm EDT Apr 24, 2026
 
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Additional Resources

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Hourly Weather Forecast

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