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Weather Conditions for Oyster Harbors, Massachusetts : Barnstable County
Issued: 12:05 am EDT Sep 9, 2026 Latitude: 41.6209434 Longitude: -70.4153029 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Mostly Cloudy on Overnight Partly Sunny on Wednesday 40% chance of rain on Thursday Sunny on Friday Sunny on Saturday Mostly Sunny on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday
Low: 57°F High: 74°F High: 80°F High: 73°F High: 71°F High: 74°F High: 74°F High: 71°F
Low: 69°F Low: 60°F Low: 61°F Low: 64°F Low: 66°F Low: 63°F  
Mostly Cloudy Partly Sunny Rain Sunny Sunny Mostly Sunny Mostly Sunny Mostly Sunny
Current Conditions at
COAST GUARD AIR STA - (KFMH)
61°
Mostly Cloudy
as of 11:55 PM EDST
Rel. Humidity: 93%
Dew Point: 59°F
Visibility: 10 Miles
Pressure: 30.26 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Broken at 7000ft
Current Conditions at
HYANNIS - (KHYA)
59°
Clear
as of 11:56 PM EDST
Rel. Humidity: 93%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 30.24 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
MARTHAS VINEYARD - (KMVY)
66°
Cloudy
as of 11:53 PM EDST
Rel. Humidity: 88%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 30.25 in.
Flight Rule: VFR
Wind Data
6 MPH
140° Southeast
Cloud Level(s): Solid Overcast at 6500ft
Current Conditions at
PLYMOUTH - (KPYM)
59°
Mostly Clear
as of 11:52 PM EDST
Rel. Humidity: 93%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 30.24 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 6500ft
Mostly Cloudy on Overnight Overnight... Mostly cloudy, with a low around 57. Calm wind.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 74. Southeast wind 6 to 15 mph, with gusts as high as 25 mph.

30% chance of rain Wednesday Night Wednesday Night... A slight chance of showers before 9pm, then a chance of showers after 3am. Mostly cloudy, with a low around 69. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 41 mph. Chance of precipitation is 30%.

40% chance of rain Thursday Thursday... A chance of showers, mainly before 10am. Mostly sunny, with a high near 80. Southwest wind around 18 mph, with gusts as high as 44 mph. Chance of precipitation is 40%.

20% chance of rain Thursday Night Thursday Night... A slight chance of showers between 11pm and 1am. Mostly cloudy, with a low around 60. Northwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

Sunny on Friday Friday... Sunny, with a high near 73. North wind around 9 mph.

Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 61. Light and variable wind.

Sunny on Saturday Saturday... Sunny, with a high near 71. Light and variable wind becoming southeast 5 to 8 mph in the afternoon.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 64. South wind around 6 mph.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 74. South wind 8 to 11 mph.

30% chance of rain Sunday Night Sunday Night... A chance of showers. Mostly cloudy, with a low around 66. Southwest wind 7 to 9 mph. Chance of precipitation is 30%.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 74. West wind 7 to 9 mph.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 63. West wind around 7 mph becoming north after midnight.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 71. Northeast wind 8 to 10 mph.

Current Radar Image


Sun Almanac for Oyster Harbors, Massachusetts
Astronomical Sunrise 04:40 AM?Astronomical sunrise occurs when the Sun is 18° below the horizon and the sky begins to brighten from a completly darkened state.
Nautical Sunrise 05:15 AM?Nautical sunrise (or nautical dawn) is the precise moment when the sun's center is 12° below the horizon in the morning. It marks the beginning of nautical twilight, allowing pilots/mariners to see the horizon.
Civil Sunrise 05:48 AM?Civil sunrise is the moment in the morning when the sun's center is 6° below the horizon. It marks the start of morning civil twilight, providing enough natural light for most, outdoor activities without artificial lighting. It typically occurs roughly 20-30 minutes before actual sunrise.
Sunrise 06:16 AM?Sunrise (or sunup) is the moment when the upper rim of the Sun appears on the horizon in the morning. It marks the end of the twilight phase, often accompanied by distinct atmospheric colors.

Daylight: 12 Hours 46 Minutes?Daylight hours are the period of time between local sunrise and sunset, representing the daily portion of sunlight. These hours change in length based on season, Earth's tilt, and latitude.

Sunset 7:02 PM?The sunset is defined in astronomy as the moment the upper limb of the Sun disappears below the horizon. It marks the end of daylight and is often accompanied by distinct atmospheric colors. It also signals the beginning of twilight.
Civil Sunset 7:30 PM?Civil sunset (or evening civil twilight) occurs when the center of the sun is 6° below the horizon, marking the end of the brightest twilight phase. It typically occurs roughly 20-30 minutes after sunset, providing enough light for most outdoor activities to continue without artificial light.
Nautical Sunset 8:03 PM?Nautical sunset occurs when the sun's center is 12° below the horizon, marking the end of nautical twilight. This phase, following civil twilight, allows the horizon to remain visible, enabling mariners to take accurate star sights for navigation. The sky is dark, but some ambient light remains
Astronomical Sunset 8:38 PM?Astronomical sunrise occurs when the Sun drops to 18° below the horizon. This causes the sky to enter a completly darkened state.

Civil Rise to Set: 13 Hours 42 Minutes
Nautical Rise to Set: 14 Hours 48 Minutes
Astro Rise to Set: 15 Hours 58 Minutes

Click for yearly Sun Almanac for Oyster Harbors
Moon Almanac for Oyster Harbors, Massachusetts
Moon Phase: Waning Crescent
Moon Illumination: 5%
Moon Age: 27.4 Days
Moon is currently below the horizon
Distance from Moon to Earth: 230,447 miles
Upcoming Lunar Events for
Oyster Harbors:
Next EventEvent TimeIllum

Moonrise:04:20 am Wed4.1%
High Moon:11:26 am Wed2.8%
Moonset:06:18 pm Wed1.9%
New Moon: Wed Aug 12
First Quarter: Wed Aug 19
Full Moon: Fri Aug 28
Last Quarter: Fri Sep 4
New Moon: Thu Sep 10
Click for Monthly Moon Almanac