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Threemile Harbor, New York Weather Forecast
Threemile Harbor, New York Weather
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Weather Forecast for Threemile Harbor, New York : Suffolk County
Issued: 3:13 pm EST Nov 4, 2025 Latitude: 41.0159332 Longitude: -72.1795229 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Veterans Day
Mostly Clear on Overnight Mostly Sunny on Wednesday Sunny on Thursday Partly Sunny on Friday 50% chance of rain on Saturday 50% chance of rain on Sunday 40% chance of rain on Monday Mostly Sunny on Veterans Day
Low: 50°F High: 62°F High: 52°F High: 60°F High: 60°F High: 59°F High: 52°F High: 46°F
Low: 48°F Low: 41°F Low: 56°F Low: 50°F Low: 47°F Low: 37°F  
Mostly Clear Mostly Sunny Sunny Partly Sunny Rain Rain Rain Mostly Sunny
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Current Conditions at
MONTAUK - (KMTP)
57°
Clear
as of 11:54 PM EST
Rel. Humidity: 35%
Dew Point: 30°F
Pressure: 30.14 in.
Wind Data
8 MPH
320° Northwest
Current Conditions at
GROTON - (KGON)
37°
Clear
as of 11:56 PM EST
Rel. Humidity: 86%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
Calm
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
Current Conditions at
WESTERLY STATE ARPT - (KWST)
36°
Clear
as of 11:53 PM EST
Rel. Humidity: 80%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Mostly Clear on Overnight Overnight... Mostly clear, with a low around 50. West wind 9 to 11 mph.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 62. Breezy, with a southwest wind 7 to 12 mph increasing to 18 to 23 mph in the afternoon.

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 48. Windy, with a southwest wind 24 to 29 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 52. Windy, with a northwest wind 21 to 28 mph, with gusts as high as 60 mph.

Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 41. Northwest wind 8 to 18 mph.

Partly Sunny on Friday Friday... Partly sunny, with a high near 60. Breezy.

70% chance of rain Friday Night Friday Night... Rain likely, mainly after 1am. Cloudy, with a low around 56. Breezy. Chance of precipitation is 70%.

50% chance of rain Saturday Saturday... A 50 percent chance of rain before 1pm. Partly sunny, with a high near 60.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 50.

50% chance of rain Sunday Sunday... A 50 percent chance of rain after 1pm. Partly sunny, with a high near 59.

70% chance of rain Sunday Night Sunday Night... Rain likely. Mostly cloudy, with a low around 47. Chance of precipitation is 70%.

40% chance of rain Monday Monday... A 40 percent chance of rain. Partly sunny, with a high near 52. Breezy.

30% chance of rain & snow Monday Night Monday Night... A chance of rain and snow. Mostly cloudy, with a low around 37. Breezy. Chance of precipitation is 30%.

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

Current Radar Image


Sun Almanac for Threemile Harbor, New York
Sunrise: 06:25 AM
Sunset: 4:40 PM
Civil Sunrise:05:56 AM
Civil Sunset: 5:09 PM
Nautical Sunrise: 05:23 AM
Nautical Sunset: 5:41 PM
Astro Sunrise: 04:51 AM
Astro Sunset: 6:13 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.