TODAY APR20
TEMPERATURE55
HUMIDITY72
PRESSURE29.91
WIND COND. 7.6
  • 6030Wed30%70%
  • 4834Thu
  • 5840Fri
  • 6544Sat30%
  • 5739Sun60%40%
daynightWeather update from Oxford, Waterbury-Oxford Airport at

Key findings

  • The highest monthly average temperature in Watertown for July is 71.8 degrees
  • The lowest monthly average temperature in Watertown for January is 28.2 degrees
  • The most monthly precipitation in Watertown occurs in June with 12.4 inches
  • The air quality index in Watertown is 26% better than the national average
  • The pollution index in Watertown is 97% better than the national average

Compare Watertown, CT Weather

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      Watertown 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°F36°F28°F3.9"
      February21°F37°F29°F4.4"
      March29°F46°F37°F7.7"
      April39°F59°F48°F9.6"
      May49°F68°F58°F9.0"
      June57°F76°F66°F12.4"
      July63°F81°F72°F9.8"
      August61°F79°F70°F7.9"
      September55°F73°F63°F6.6"
      October44°F62°F53°F10.7"
      November35°F51°F43°F4.9"
      December27°F41°F34°F3.7"

      Watertown 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.
      IndexWatertownConnecticutNational
      Air quality index374350
      Pollution index161,4277,127,5315,066,862

      Watertown air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality342
      Days with moderate air quality23
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Watertown air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.002%
      Carbon Tetrachloride0.000%
      Lead0.000%
      Mercury0.000%

      Average monthly Watertown temperature with heat index

      Watertown monthly precipitation with daily maximum

      Watertown monthly snow depth with daily maximum

      Watertown monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Bethlehem Village, CT1,8523726%
      Terryville, CT5,4313726%
      Litchfield, CT1,3293726%
      Bristol, CT60,4373726%
      Thomaston, CT1,8033726%
      Watertown, CT3,3513726%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Treasure Lake, PA3,3513334%
      Lebanon, VA3,3514510%
      Dover Base Housing, DE3,3524216%
      Islandia, NY3,3494314%
      Barron, WI3,3493432%
      Watertown, CT3,3513726%
      Source: The Watertown, 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.