TODAY JUN21
TEMPERATURE72
HUMIDITY84
PRESSURE29.77
WIND COND.170 8.1
  • 7058Fri
  • 6863Sat40%60%
  • 7663Sun30%
  • 7457Mon
  • 7459Tue
daynightWeather update from Westerly, Westerly State Airport at

Stonington 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-8°F58°F32°F3.7"
February2°F59°F31°F2.3"
March7°F68°F37°F3.2"
April24°F88°F47°F4.2"
May32°F85°F55°F4.2"
June39°F90°F65°F4.0"
July49°F91°F71°F4.3"
August49°F91°F71°F3.4"
September39°F84°F64°F3.8"
October26°F77°F54°F5.7"
November19°F69°F46°F3.7"
December9°F64°F36°F4.1"

Did you know?

  • The highest monthly average temperature in Stonington for July is 71 degrees.
  • The lowest monthly average temperature in Stonington for February is 31 degrees.
  • The most monthly precipitation in Stonington occurs in October with 5.7 inches.
  • The air quality index in Stonington is 11% better than the national average.
  • The pollution index in Stonington is 18% better than the national average.

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Compare Stonington, CT Weather To Other Cities

Stonington 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.
IndexStoningtonConnecticutNational
Air quality index444350
Pollution index4,117,2507,127,5315,066,862

Stonington air quality information

MeasurementTotal
Days measured349
Days with good air quality234
Days with moderate air quality109
Days w/ poor A.Q. for sensitive groups6
Days with unhealthy air quality

Stonington air quality information

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

Average monthly Stonington temperature with heat index

Stonington monthly precipitation with daily maximum

Stonington monthly snow depth with daily maximum

Stonington monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Gales Ferry, CT1,0054412%
Mashantucket, CT2314412%
Norwich, CT40,0574412%
Poquonock Bridge, CT2,2064412%
Bradford, RI1,1934412%
Stonington, CT9734412%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Lake Waukomis, MO9735816%
Mora, NM9731570%
Silkworth, PA9734020%
Primghar, IA9734118%
Belwood, NC9723628%
Stonington, CT9734412%
Source: The Stonington, 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.