TODAY NOV25
TEMPERATURE49
HUMIDITY48
PRESSURE101730
WIND COND.320 13
  • 5837Tue80%
  • 5038Wed
  • 503670%70%
  • 4729Fri
  • 4327Sat
daynightWeather update from New Haven, Tweed-New Haven Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Annex for July is 74.9 degrees
  • The lowest monthly average temperature in Annex for January is 31.5 degrees
  • The most monthly precipitation in Annex occurs in June with 4.7 inches
  • The air quality index in Annex is 3% better than the national average
  • The pollution index in Annex is 432% worse than the national average

Compare New Haven, CT Weather

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      Annex 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°F40°F32°F2.6"
      February23°F41°F32°F2.8"
      March30°F48°F39°F3.4"
      April40°F60°F50°F4.5"
      May50°F69°F59°F3.8"
      June60°F78°F68°F4.7"
      July66°F84°F75°F3.1"
      August64°F82°F74°F3.7"
      September58°F77°F67°F3.2"
      October47°F66°F57°F4.5"
      November37°F55°F46°F2.9"
      December30°F45°F37°F4.2"

      Annex 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.
      IndexAnnexNew HavenConnecticut
      Air quality index414143
      Pollution index14,500,30014,500,3008,629,883

      Annex air quality

      MeasurementTotal
      Days measured365
      Days with good air quality280
      Days with moderate air quality71
      Days w/ poor A.Q. for sensitive groups12
      Days with unhealthy air quality2

      Air quality details

      PollutantTotal
      Arsenic0.030%
      Benzene0.140%
      Carbon Tetrachloride0.050%
      Lead0.080%
      Mercury0.060%

      Average monthly Annex temperature with heat index

      Annex monthly precipitation with daily maximum

      Annex monthly snow depth with daily maximum

      Annex monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Woodmont, CT1,6014118.0%
      Wallingford Center, CT18,9484118.0%
      West Haven, CT54,6664118.0%
      Orange, CT13,9284118.0%
      Cheshire Village, CT6,4914118.0%
      New Haven, CT130,3814118.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Stamford, CT130,0574314.0%
      Kent, WA130,0384510.0%
      Concord, CA129,2274020.0%
      Round Rock, TX128,8124412.0%
      Langley, BC132,088n/a 
      New Haven, CT130,3814118.0%
      Source: The Annex, New Haven, 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.