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Key findings

  • The highest monthly average temperature in South West for July is 76 degrees
  • The lowest monthly average temperature in South West for January is 30 degrees
  • The most monthly precipitation in South West occurs in October with 5.2 inches
  • The air quality index in South West is 18% better than the national average
  • The pollution index in South West is 45% better than the national average

Compare Hartford, CT Weather

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      South West 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
      January21°F39°F30°F2.9"
      February21°F40°F31°F3.1"
      March29°F49°F39°F3.5"
      April40°F63°F51°F4.2"
      May50°F73°F61°F3.8"
      June60°F81°F70°F5.1"
      July66°F86°F76°F4.5"
      August64°F84°F73°F4.1"
      September57°F78°F67°F3.5"
      October46°F66°F55°F5.2"
      November35°F54°F44°F3.3"
      December27°F43°F35°F4.2"

      South West 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 WestHartfordConnecticut
      Air quality index414143
      Pollution index2,806,1502,806,1507,127,531

      South West air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality291
      Days with moderate air quality66
      Days w/ poor A.Q. for sensitive groups7
      Days with unhealthy air quality1

      South West air quality information

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

      Average monthly South West temperature with heat index

      South West monthly precipitation with daily maximum

      South West monthly snow depth with daily maximum

      South West monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Collinsville, CT3,6933726%
      New Hartford Center, CT1,4093726%
      Bristol, CT60,4373726%
      Weatogue, CT3,1794118%
      Glastonbury Center, CT7,5234118%
      Hartford, CT124,3204118%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      East Los Angeles, CA124,1917244%
      Kent, WA125,4924510%
      Lafayette, LA125,8084118%
      Santa Clara, CA122,7254314%
      Abilene, TX122,6123334%
      Hartford, CT124,3204118%
      Source: The South West, Hartford, 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.