TODAY MAR29
TEMPERATURE44
HUMIDITY58
PRESSURE100240
WIND COND.330 29.5
  • 5441Sat20%
  • 5538Sun30%
  • 5039Mon30%30%
  • 4738Tue80%70%
  • 4937Wed60%60%
daynightWeather update from Groton / New London, Groton / New London Airport at
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Weather Quick Facts

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

Compare Niantic, CT Weather

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      Niantic 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"

      Niantic 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.
      IndexNianticConnecticutNational
      Air quality index374342
      Pollution index4,117,2508,629,8832,726,193

      Niantic air quality information

      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

      Niantic air quality information

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

      Average monthly Niantic temperature with heat index

      Niantic monthly precipitation with daily maximum

      Niantic monthly snow depth with daily maximum

      Niantic monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Fishers Island, NY613726.0%
      Mashantucket, CT2253726.0%
      Conning Towers Nautilus Park, CT9,6063726.0%
      Fenwick, CT443726.0%
      Old Saybrook Center, CT1,9843726.0%
      Niantic, CT3,0833726.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Wilder, KY3,083548.0%
      Calera, OK3,082325550.0%
      Thurso, QC3,084n/a 
      Bishop, TX3,0853040.0%
      Chandler, TX3,0853628.0%
      Niantic, CT3,0833726.0%
      Source: The Niantic, 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.