TODAY AUG14
TEMPERATURE72
HUMIDITY100
PRESSURE29.92
WIND COND.
  • 8172Tue20%
  • 8372Wed20%20%
  • 8271Thu
  • 8273Fri30%
  • 8170Sat30%
daynightWeather update from Hyannis, Barnstable Municipal-Boardman Airport at

South Yarmouth Average Weather

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January25°F40°F31°F7.2"
February22°F38°F29°F3.1"
March27°F44°F35°F9.7"
April36°F54°F45°F8.7"
May46°F62°F53°F6.7"
June57°F73°F64°F1.9"
July64°F79°F71°F5.2"
August63°F81°F71°F3.1"
September57°F75°F66°F9.5"
October48°F65°F56°F7.3"
November36°F54°F45°F5.9"
December27°F42°F34°F5.5"

Did you know?

  • The highest monthly average temperature in South Yarmouth for August is 71 degrees.
  • The lowest monthly average temperature in South Yarmouth for February is 29 degrees.
  • The most monthly precipitation in South Yarmouth occurs in March with 9.7 inches.
  • The air quality index in South Yarmouth is 33% better than the national average.
  • The pollution index in South Yarmouth is 55% worse than the national average.

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Compare South Yarmouth, MA Weather To Other Cities

South Yarmouth air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
IndexSouth YarmouthMassachusettsNational
Air quality index334050
Pollution index7,903,83012,377,8395,066,862

South Yarmouth air quality information

MeasurementTotal
Days measured317
Days with good air quality308
Days with moderate air quality7
Days w/ poor A.Q. for sensitive groups2
Days with unhealthy air quality

South Yarmouth air quality information

PollutantTotal
Arsenic0.060%
Benzene0.070%
Carbon Tetrachloride0.010%
Lead0.080%
Mercury0.030%

Average monthly South Yarmouth temperature with heat index

South Yarmouth monthly precipitation with daily maximum

South Yarmouth monthly snow depth with daily maximum

South Yarmouth monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Brewster, MA2,0883334%
East Dennis, MA2,8243334%
Harwich Port, MA1,7213334%
Northwest Harwich, MA4,0443334%
South Dennis, MA3,5823334%
South Yarmouth, MA10,9533334%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Sonoma, CA10,9524314%
Lighthouse Point, FL10,9464118%
White House, TN10,9444510%
Dent, OH10,963548%
Delhi, CA10,968548%
South Yarmouth, MA10,9533334%
Source: The South Yarmouth, MA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.