TODAY MAR19
TEMPERATURE35
HUMIDITY56
PRESSURE100200
WIND COND.280 14.8
  • 4536Tue
  • 4830Wed30%
  • 4225Thu
  • 4033Fri
  • 4931Sat70%60%
daynightWeather update from Hyannis, Barnstable Municipal-Boardman Airport at
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Weather Quick Facts

  • The highest monthly average temperature in South Yarmouth for August is 71.3 degrees
  • The lowest monthly average temperature in South Yarmouth for February is 29.4 degrees
  • The most monthly precipitation in South Yarmouth occurs in March with 9.7 inches
  • The air quality index in South Yarmouth is 14% better than the national average
  • The pollution index in South Yarmouth is 190% worse than the national average

Compare South Yarmouth, MA Weather

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      South Yarmouth Average Temperature

      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"

      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 index364042
      Pollution index7,903,8308,399,6102,726,193

      South Yarmouth air quality information

      MeasurementTotal
      Days measured359
      Days with good air quality348
      Days with moderate air quality11
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      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

      CityPopulationAir Quality IndexNational Avg.
      West Chatham, MA1,2243628.0%
      New Seabury, MA5953628.0%
      Dennis, MA1,9623628.0%
      East Sandwich, MA3,6283628.0%
      South Dennis, MA2,8953628.0%
      South Yarmouth, MA10,5983628.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Greentree, NJ10,597512.0%
      Cordele, GA10,6003922.0%
      Sweetwater, TX10,6012550.0%
      Morro Bay, CA10,592468.0%
      Lake Barcroft, VA10,604476.0%
      South Yarmouth, MA10,5983628.0%
      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.