TODAY MAY25
TEMPERATURE67
HUMIDITY84
PRESSURE30.2
WIND COND.140 8.1
  • 7958Tue
  • 8062Wed
  • 7763Thu30%
  • 7863Fri40%60%
  • 7551Sat60%30%
daynightWeather update from Oxford, Waterbury-Oxford Airport at
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Northwest Harwinton 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"

Did you know?

  • The highest monthly average temperature in Northwest Harwinton for July is 72 degrees.
  • The lowest monthly average temperature in Northwest Harwinton for January is 28 degrees.
  • The most monthly precipitation in Northwest Harwinton occurs in June with 12.4 inches.
  • The air quality index in Northwest Harwinton is 22% better than the national average.
  • The pollution index in Northwest Harwinton is 97% better than the national average.

Compare Northwest Harwinton, CT Weather To Other Cities

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      Northwest Harwinton 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.
      IndexNorthwest HarwintonConnecticutNational
      Air quality index394350
      Pollution index161,4277,127,5315,066,862

      Northwest Harwinton air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality298
      Days with moderate air quality65
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality

      Northwest Harwinton air quality information

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

      Average monthly Northwest Harwinton temperature with heat index

      Northwest Harwinton monthly precipitation with daily maximum

      Northwest Harwinton monthly snow depth with daily maximum

      Northwest Harwinton monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Bethlehem Village, CT1,8523922%
      Collinsville, CT3,6933922%
      New Preston, CT9963922%
      Torrington, CT35,2273922%
      Winsted, CT7,5353922%
      Northwest Harwinton, CT3,1033922%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Harbour Heights, FL3,1033334%
      Westminster, LA3,103468%
      Riverside, MO3,1035816%
      Crockett, CA3,1034314%
      Ainaloa, HI3,102142184%
      Northwest Harwinton, CT3,1033922%
      Source: The Northwest Harwinton, 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.