TODAY MAY30
TEMPERATURE63
HUMIDITY100
PRESSURE29.86
WIND COND.260 4.7
  • 7046Sun
  • 6746Mon
  • 6853Tue30%
  • 7256Wed40%30%
  • 7455Thu
daynightWeather update from Groton / New London, Groton / New London Airport at
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Mashantucket 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
January23°F40°F32°F2.5"
February23°F40°F32°F2.1"
March30°F47°F38°F3.3"
April39°F58°F48°F3.1"
May48°F66°F57°F3.6"
June58°F75°F66°F3.6"
July65°F81°F72°F2.8"
August63°F80°F71°F3.0"
September57°F75°F66°F3.3"
October47°F65°F56°F4.4"
November37°F55°F46°F2.9"
December29°F46°F37°F3.4"

Did you know?

  • The highest monthly average temperature in Mashantucket for July is 72 degrees.
  • The lowest monthly average temperature in Mashantucket for January is 32 degrees.
  • The most monthly precipitation in Mashantucket occurs in October with 4.4 inches.
  • The air quality index in Mashantucket is 12% better than the national average.
  • The pollution index in Mashantucket is 45% better than the national average.

Compare Mashantucket, CT Weather To Other Cities

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      Mashantucket 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.
      IndexMashantucketConnecticutNational
      Air quality index444350
      Pollution index2,806,1507,127,5315,066,862

      Mashantucket air quality information

      MeasurementTotal
      Days measured349
      Days with good air quality234
      Days with moderate air quality109
      Days w/ poor A.Q. for sensitive groups6
      Days with unhealthy air quality

      Mashantucket air quality information

      PollutantTotal
      Arsenic0.004%
      Benzene0.030%
      Carbon Tetrachloride0.010%
      Lead0.040%
      Mercury0.010%

      Average monthly Mashantucket temperature with heat index

      Mashantucket monthly precipitation with daily maximum

      Mashantucket monthly snow depth with daily maximum

      Mashantucket monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Gales Ferry, CT1,0054412%
      Long Hill, CT4,4624412%
      Noank, CT1,8894412%
      Pawcatuck, CT5,1414412%
      Fishers Island, NY3034412%
      Mashantucket, CT2314412%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      South Mills, NC2313922%
      Atmautluak, AK2312942%
      Eastport, MI2313628%
      Rosedale, NM2313726%
      Beyerville, AZ231355610%
      Mashantucket, CT2314412%
      Source: The Mashantucket, CT 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.