South Dennis, Massachusetts Weather
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Weather Forecast for South Dennis, Massachusetts : Barnstable County
Issued: 2:22 am EDT Jul 2, 2025 Latitude: 41.6895552 Longitude: -70.1564077 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Thursday Independence Day Saturday Sunday Monday Tuesday
50% chance of thunderstorms on Today 20% chance of rain on Tonight Mostly Sunny on Thursday Sunny on Independence Day Sunny on Saturday Mostly Sunny on Sunday Mostly Sunny on Monday 30% chance of rain on Tuesday
High: 81°F Low: 67°F High: 83°F High: 81°F High: 82°F High: 83°F High: 84°F High: 83°F
Low: 66°F Low: 65°F Low: 67°F Low: 69°F Low: 69°F  
Thunderstorms Rain Mostly Sunny Sunny Sunny Mostly Sunny Mostly Sunny Rain
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Current Conditions at
HYANNIS - (KHYA)
75°
Mostly Cloudy
Light Rain
as of 7:56 AM EDST
Rel. Humidity: 83%
Dew Point: 70°F
Visibility: 10 Miles
Pressure: 29.83 in.
Flight Rule: VFR
Wind Data
7 MPH
240° Southwest
Cloud Level(s): Scattered at 7500ft, Broken at 9500ft
Current Conditions at
CHATHAM - (KCQX)
73°
Cloudy
as of 7:52 AM EDST
Rel. Humidity: 88%
Dew Point: 70°F
Visibility: 10 Miles
Pressure: 29.84 in.
Flight Rule: VFR
Wind Data
6 MPH
230° Southwest
Cloud Level(s): Few at 400ft, Broken at 7000ft, Solid Overcast at 8500ft
Current Conditions at
COAST GUARD AIR STA - (KFMH)
72°
Mostly Cloudy
Light Rain
as of 7:50 AM EDST
Rel. Humidity: 94%
Dew Point: 70°F
Visibility: 10 Miles
Pressure: 29.86 in.
Flight Rule: VFR
Wind Data
7 MPH
260° West
Cloud Level(s): Few at 4000ft, Broken at 9500ft
Current Conditions at
PROVINCETOWN - (KPVC)
70°
Mostly Cloudy
as of 7:56 AM EDST
Rel. Humidity: 100%
Dew Point: 70°F
Visibility: 10 Miles
Pressure: 29.84 in.
Flight Rule: VFR
Wind Data
8 MPH
240° Southwest
Cloud Level(s): Broken at 10000ft
50% chance of thunderstorms Today Today... A chance of showers and thunderstorms. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 81. Southwest wind 6 to 9 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
20% chance of rain Tonight Tonight... A slight chance of showers before 7pm, then a slight chance of showers after 1am. Patchy fog. Otherwise, mostly cloudy, with a low around 67. Southwest wind around 7 mph. Chance of precipitation is 20%.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 83. Southwest wind 5 to 9 mph.
20% chance of thunderstorms Thursday Night Thursday Night... A slight chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 66. Northwest wind around 7 mph. Chance of precipitation is 20%.
Sunny on Independence Day Independence Day... Sunny, with a high near 81. Northwest wind around 7 mph becoming northeast in the afternoon.
Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 65. Light and variable wind.
Sunny on Saturday Saturday... Sunny, with a high near 82. Northwest wind 5 to 7 mph becoming south in the afternoon.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 67. Southwest wind around 6 mph.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 83. Southwest wind 8 to 13 mph.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 69. Southwest wind around 10 mph, with gusts as high as 20 mph.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 84. Southwest wind 10 to 13 mph.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 69. Southwest wind 8 to 10 mph.
30% chance of rain Tuesday Tuesday... A chance of showers. Mostly sunny, with a high near 83. Southwest wind 8 to 10 mph. Chance of precipitation is 30%.
Current Radar Image


Sun Almanac for South Dennis, Massachusetts
Sunrise: 05:11 AM
Sunset: 8:19 PM
Civil Sunrise:04:37 AM
Civil Sunset: 8:53 PM
Nautical Sunrise: 03:53 AM
Nautical Sunset: 9:36 PM
Astro Sunrise: 03:02 AM
Astro Sunset: 10:28 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.