TODAY NOV09
TEMPERATURE46
HUMIDITY49
PRESSURE101690
WIND COND.330 25.9
  • 5328Sat
  • 6050Sun60%
  • 674590%
  • 6034Tue
  • 5338Wed
daynightWeather update from Groton / New London, Groton / New London Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Long Hill for July is 72.2 degrees
  • The lowest monthly average temperature in Long Hill for January is 31.5 degrees
  • The most monthly precipitation in Long Hill occurs in October with 4.4 inches
  • The air quality index in Long Hill is 12% better than the national average
  • The pollution index in Long Hill is 51% worse than the national average

Compare Long Hill, CT Weather

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      Long Hill 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°F2.5"
      February23°F40°F32°F2.1"
      March30°F47°F38°F3.3"
      April39°F58°F48°F3.1"
      May48°F66°F57°F3.6"
      June58°F75°F66°F3.6"
      July65°F81°F72°F2.8"
      August63°F80°F71°F3.0"
      September57°F75°F66°F3.3"
      October47°F65°F56°F4.4"
      November37°F55°F46°F2.9"
      December29°F46°F37°F3.4"

      Long Hill 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.
      IndexLong HillConnecticutNational
      Air quality index374342
      Pollution index4,117,2508,629,8832,726,193

      Long Hill air quality

      MeasurementTotal
      Days measured364
      Days with good air quality323
      Days with moderate air quality34
      Days w/ poor A.Q. for sensitive groups7
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.010%
      Benzene0.050%
      Carbon Tetrachloride0.010%
      Lead0.010%
      Mercury0.010%

      Average monthly Long Hill temperature with heat index

      Long Hill monthly precipitation with daily maximum

      Long Hill monthly snow depth with daily maximum

      Long Hill monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Mashantucket, CT2253726.0%
      Gales Ferry, CT1,0933726.0%
      Bradford, RI1,2653726.0%
      New London, CT27,0013726.0%
      Mystic, CT4,7763726.0%
      Long Hill, CT8,3153726.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Hawthorn Woods, IL8,3135510.0%
      Denison, IA8,3193530.0%
      Napoleon, OH8,3104020.0%
      Millersville, PA8,3094510.0%
      Camrose County, AB8,308n/a 
      Long Hill, CT8,3153726.0%
      Source: The Long Hill, 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.