Sag Harbor, New York Weather
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Weather Forecast for Sag Harbor, New York : Suffolk County
Issued: 4:37 am EDT Sep 17, 2025 Latitude: 40.9978773 Longitude: -72.2925819 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Thursday Friday Saturday Sunday Monday Tuesday
60% chance of rain on Today 70% chance of thunderstorms on Tonight 30% chance of rain on Thursday Sunny on Friday Sunny on Saturday Sunny on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday
High: 72°F Low: 62°F High: 75°F High: 79°F High: 69°F High: 69°F High: 73°F High: 75°F
Low: 63°F Low: 56°F Low: 56°F Low: 57°F Low: 60°F  
Rain Thunderstorms Rain Sunny Sunny Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
MONTAUK - (KMTP)
70°
Clear
as of 8:54 AM EDST
Rel. Humidity: 60%
Dew Point: 55°F
Pressure: 30.15 in.
Wind Data
10 MPH
Gust: 20 MPH
050° Northeast
Current Conditions at
WESTHAMPTON BEACH - (KFOK)
66°
Cloudy
as of 8:53 AM EDST
Rel. Humidity: 77%
Dew Point: 59°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: MVFR
Wind Data
12 MPH
Gust: 23 MPH
060° Northeast
Cloud Level(s): Solid Overcast at 2000ft
Current Conditions at
GROTON - (KGON)
61°
Mostly Clear
as of 8:56 AM EDST
Rel. Humidity: 87%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
10 MPH
050° Northeast
Cloud Level(s): Few at 3800ft
Current Conditions at
SHIRLEY/BROOKHAVEN - (KHWV)
66°
Mostly Cloudy
as of 9:06 AM EDST
Rel. Humidity: 72%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: MVFR
Wind Data
6 MPH
Gust: 18 MPH
Cloud Level(s): Broken at 2000ft, Broken at 3400ft
60% chance of rain Today Today... Showers likely, mainly after 5pm. Mostly cloudy, with a high near 72. East wind 11 to 13 mph. Chance of precipitation is 60%.
70% chance of thunderstorms Tonight Tonight... Showers likely and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 62. East wind 6 to 9 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
30% chance of rain Thursday Thursday... A 30 percent chance of showers before 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 75. Northeast wind around 6 mph becoming northwest in the afternoon.
Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 63. Calm wind becoming west around 5 mph after midnight.
Sunny on Friday Friday... Sunny, with a high near 79. Northwest wind around 7 mph.
Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 56.
Sunny on Saturday Saturday... Sunny, with a high near 69.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 56.
Sunny on Sunday Sunday... Sunny, with a high near 69.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 57.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 73.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 60.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 75.
Current Radar Image


Sun Almanac for Sag Harbor, New York
Sunrise: 06:32 AM
Sunset: 6:55 PM
Civil Sunrise:06:05 AM
Civil Sunset: 7:22 PM
Nautical Sunrise: 05:32 AM
Nautical Sunset: 7:55 PM
Astro Sunrise: 04:59 AM
Astro Sunset: 8:28 PM
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