TODAY AUG15
TEMPERATURE72
HUMIDITY87
PRESSURE29.83
WIND COND.220 6.9
  • 8770Wed
  • 8971Thu
  • 8772Fri50%
  • 8366Sat30%
  • 8063Sun
daynightWeather update from Groton / New London, Groton / New London Airport at

Mashantucket 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
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 11% better than the national average.
  • The pollution index in Mashantucket is 44% better than the national average.

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Compare Mashantucket, CT Weather To Other Cities

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.
Bethany, PA2314020%
South Mills, NC2313922%
Eastport, MI2313628%
Beyerville, AZ231355610%
Whitestone, AK2313726%
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.