TODAY JUL21
TEMPERATURE70
HUMIDITY63
PRESSURE30.07
WIND COND.100 6.9
  • 7970Sun80%50%
  • 8070Mon70%60%
  • 8369Tue40%30%
  • 8168Wed50%50%
  • 7966Thu60%60%
daynightWeather update from Oxford, Waterbury-Oxford Airport at

Northwest Harwinton 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
January-6°F68°F28°F1.2"
February3°F59°F29°F2.8"
March1°F66°F35°F2.0"
April19°F88°F48°F5.5"
May27°F88°F56°F4.1"
June39°F93°F66°F4.2"
July46°F91°F71°F3.8"
August46°F93°F69°F2.4"
September36°F88°F62°F2.3"
October23°F84°F51°F2.1"
November14°F73°F43°F1.0"
December1°F63°F32°F1.2"

Did you know?

  • The highest monthly average temperature in Northwest Harwinton for July is 71 degrees.
  • The lowest monthly average temperature in Northwest Harwinton for January is 28 degrees.
  • The most monthly precipitation in Northwest Harwinton occurs in April with 5.5 inches.
  • The air quality index in Northwest Harwinton is 21% better than the national average.
  • The pollution index in Northwest Harwinton is 96% better than the national average.

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Compare Northwest Harwinton, CT Weather To Other Cities

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.
Bristol, CT60,4373922%
Falls Village, CT4903922%
Norfolk, CT4913922%
Watertown, CT3,3513922%
Canaan, CT1,1923922%
Northwest Harwinton, CT3,1033922%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Harbour Heights, FL3,1033334%
Crockett, CA3,1034314%
Westminster, LA3,103468%
Riverside, MO3,1035816%
Indian Springs, GA3,1044412%
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.