TODAY NOV21
TEMPERATURE49
HUMIDITY93
PRESSURE99590
WIND COND.60 18.4
  • 5343Fri30%80%
  • 5143Sat90%70%
  • 5340Sun
  • 5446Mon
  • 5639Tue50%30%
daynightWeather update from Nantucket, Nantucket Memorial Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Nantucket for August is 69.5 degrees
  • The lowest monthly average temperature in Nantucket for February is 33.6 degrees
  • The most monthly precipitation in Nantucket occurs in October with 5 inches
  • The air quality index in Nantucket is 14% better than the national average
  • The pollution index in Nantucket is 190% worse than the national average

Compare Nantucket, MA Weather

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      Nantucket 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
      January27°F42°F35°F3.7"
      February26°F42°F34°F4.2"
      March29°F45°F37°F3.7"
      April39°F55°F46°F3.7"
      May47°F63°F55°F3.3"
      June55°F71°F62°F2.7"
      July63°F78°F69°F2.9"
      August62°F77°F70°F3.1"
      September57°F73°F65°F3.8"
      October50°F65°F58°F5.0"
      November40°F55°F47°F4.1"
      December33°F49°F41°F4.9"

      Nantucket 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.
      IndexNantucketMassachusettsNational
      Air quality index364042
      Pollution index7,903,8308,399,6102,726,193

      Nantucket air quality

      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

      Air quality details

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

      Average monthly Nantucket temperature with heat index

      Nantucket monthly precipitation with daily maximum

      Nantucket monthly snow depth with daily maximum

      Nantucket monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Madaket, MA2913628.0%
      Siasconset, MA893628.0%
      Nantucket, MA8,6063628.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Perryton, TX8,6094412.0%
      Willowbrook, IL8,6105510.0%
      Lake Villa, IL8,6013922.0%
      Pleasant Hill, MO8,611476.0%
      Fort Lupton, CO8,6005816.0%
      Nantucket, MA8,6063628.0%
      Source: The Nantucket, 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.