TODAY APR14
TEMPERATURE48
HUMIDITY73
PRESSURE30.09
WIND COND.
  • 6245Wed20%
  • 4938Thu80%80%
  • 4840Fri70%40%
  • 5443Sat
  • 5746Sun
daynightWeather update from Bridgeport, Sikorsky Memorial Airport at

Key findings

  • The highest monthly average temperature in Norwalk for July is 74.5 degrees
  • The lowest monthly average temperature in Norwalk for January is 30.4 degrees
  • The most monthly precipitation in Norwalk occurs in June with 5.1 inches
  • The air quality index in Norwalk is 14% better than the national average
  • The pollution index in Norwalk is 235% worse than the national average

Compare Norwalk, CT Weather

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      Norwalk 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
      January23°F39°F30°F3.0"
      February23°F40°F31°F2.6"
      March30°F49°F39°F3.5"
      April41°F62°F50°F4.2"
      May50°F71°F60°F4.2"
      June60°F79°F69°F5.1"
      July66°F84°F74°F4.4"
      August64°F82°F72°F4.2"
      September57°F77°F66°F4.3"
      October47°F65°F55°F5.1"
      November37°F54°F45°F3.1"
      December29°F44°F36°F4.5"

      Norwalk 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.
      IndexNorwalkConnecticutNational
      Air quality index434350
      Pollution index16,950,7007,127,5315,066,862

      Norwalk air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality262
      Days with moderate air quality82
      Days w/ poor A.Q. for sensitive groups18
      Days with unhealthy air quality3

      Norwalk air quality information

      PollutantTotal
      Arsenic0.030%
      Benzene0.140%
      Carbon Tetrachloride0.070%
      Lead0.080%
      Mercury0.030%

      Average monthly Norwalk temperature with heat index

      Norwalk monthly precipitation with daily maximum

      Norwalk monthly snow depth with daily maximum

      Norwalk monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Pemberwick, CT4,2864314%
      Bridgeport, CT147,0224314%
      Georgetown, CT1,8214314%
      Riverside, CT8,2894314%
      Westport, CT27,5114314%
      Norwalk, CT87,9304314%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Reading, PA87,8994216%
      Nampa, ID87,8963628%
      Fort Smith, AR87,7123628%
      Waukegan, IL88,1593922%
      Meridian, ID88,2473628%
      Norwalk, CT87,9304314%
      Source: The Norwalk, 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.