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Mount Sinai, New York Weather Forecast
Mount Sinai, New York Weather
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Weather Forecast for Mount Sinai, New York : Suffolk County
Issued: 3:13 pm EST Nov 4, 2025 Latitude: 40.9470432 Longitude: -73.0295495 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Veterans Day
Mostly Clear on Overnight Increasing Clouds on Wednesday Sunny on Thursday Partly Sunny on Friday 40% chance of rain on Saturday 50% chance of rain on Sunday 30% chance of rain on Monday Mostly Sunny on Veterans Day
Low: 42°F High: 63°F High: 54°F High: 59°F High: 63°F High: 59°F High: 51°F High: 46°F
Low: 45°F Low: 37°F Low: 52°F Low: 46°F Low: 44°F Low: 33°F  
Mostly Clear Increasing Clouds Sunny Partly Sunny Rain Rain Rain Mostly Sunny
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Current Conditions at
ISLIP - (KISP)
41°
Clear
as of 11:56 PM EST
Rel. Humidity: 65%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 30.14 in.
Flight Rule: VFR
Wind Data
7 MPH
260° West
Cloud Level(s): Clear
Current Conditions at
SHIRLEY/BROOKHAVEN - (KHWV)
37°
Clear
as of 11:56 PM EST
Rel. Humidity: 69%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
BRIDGEPORT - (KBDR)
46°
Clear
as of 11:52 PM EST
Rel. Humidity: 52%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 30.14 in.
Flight Rule: VFR
Wind Data
5 MPH
260° West
Cloud Level(s): Clear
Current Conditions at
WESTHAMPTON BEACH - (KFOK)
28°
Clear
as of 11:53 PM EST
Rel. Humidity: 86%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.16 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Mostly Clear on Overnight Overnight... Mostly clear, with a low around 42. West wind 7 to 9 mph.

Increasing Clouds on Wednesday Wednesday... Increasing clouds, with a high near 63. Southwest wind 6 to 16 mph.

20% chance of rain Wednesday Night Wednesday Night... A 20 percent chance of rain before 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 45. Windy, with a southwest wind 23 to 28 mph becoming west 32 to 37 mph after midnight. Winds could gust as high as 55 mph.

Sunny on Thursday Thursday... Sunny, with a high near 54. Breezy, with a northwest wind 20 to 23 mph, with gusts as high as 55 mph.

Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 37. Northwest wind 6 to 15 mph.

Partly Sunny on Friday Friday... Partly sunny, with a high near 59.

60% chance of rain Friday Night Friday Night... Rain likely, mainly after 1am. Cloudy, with a low around 52. Chance of precipitation is 60%.

40% chance of rain Saturday Saturday... A 40 percent chance of rain before 1pm. Partly sunny, with a high near 63.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 46.

50% chance of rain Sunday Sunday... A 50 percent chance of rain. Mostly cloudy, with a high near 59.

60% chance of rain Sunday Night Sunday Night... Rain likely. Mostly cloudy, with a low around 44. Chance of precipitation is 60%.

30% chance of rain Monday Monday... A 30 percent chance of rain. Partly sunny, with a high near 51.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 33.

Mostly Sunny on Veterans Day Veterans Day... Mostly sunny, with a high near 46.

Current Radar Image


Sun Almanac for Mount Sinai, New York
Sunrise: 06:28 AM
Sunset: 4:43 PM
Civil Sunrise:05:59 AM
Civil Sunset: 5:12 PM
Nautical Sunrise: 05:27 AM
Nautical Sunset: 5:45 PM
Astro Sunrise: 04:55 AM
Astro Sunset: 6:17 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.