TODAY MAR19
TEMPERATURE36
HUMIDITY56
PRESSURE100270
WIND COND.280 5.4
  • 4434Tue
  • 4733Wed20%
  • 4128Thu
  • 3934Fri
  • 4633Sat50%50%
daynightWeather update from Chatham, Chatham Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Chatham for August is 71 degrees
  • The lowest monthly average temperature in Chatham for February is 30.1 degrees
  • The most monthly precipitation in Chatham occurs in April with 7.9 inches
  • The air quality index in Chatham is 14% better than the national average
  • The pollution index in Chatham is 190% worse than the national average

Compare Chatham, MA Weather

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      Chatham 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
      January26°F39°F32°F5.5"
      February23°F37°F30°F2.2"
      March29°F45°F36°F6.7"
      April37°F51°F44°F7.9"
      May47°F60°F53°F6.7"
      June57°F71°F63°F1.4"
      July63°F77°F70°F5.0"
      August64°F79°F71°F1.8"
      September59°F74°F66°F4.9"
      October51°F64°F57°F5.6"
      November39°F54°F47°F4.6"
      December30°F43°F36°F5.5"

      Chatham 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.
      IndexChathamMassachusettsNational
      Air quality index364042
      Pollution index7,903,8308,399,6102,726,193

      Chatham 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

      Chatham air quality information

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

      Average monthly Chatham temperature with heat index

      Chatham monthly precipitation with daily maximum

      Chatham monthly snow depth with daily maximum

      Chatham monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      West Chatham, MA1,2243628.0%
      East Dennis, MA3,0683628.0%
      Northwest Harwich, MA4,1233628.0%
      South Yarmouth, MA10,5983628.0%
      Brewster, MA1,3473628.0%
      Chatham, MA1,5503628.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Union Point, GA1,5504412.0%
      Manning, IA1,5504020.0%
      Falmouth Foreside, ME1,5504020.0%
      Homer, MI1,5503824.0%
      Sackets Harbor, NY1,5503530.0%
      Chatham, MA1,5503628.0%
      Source: The Chatham, 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.