TODAY DEC14
TEMPERATURE31
HUMIDITY85
PRESSURE30.51
WIND COND.10 4.7
  • 5033Sat50%
  • 4335Sun30%50%
  • 4528Mon
  • 3722Tue
  • 4029Wed
daynightWeather update from Westerly, Westerly State Airport at

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Westerly 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°F31°F5.1"
February21°F37°F29°F3.7"
March26°F44°F36°F7.9"
April36°F55°F46°F10.1"
May46°F65°F55°F5.8"
June57°F75°F65°F4.6"
July62°F80°F70°F3.4"
August63°F81°F71°F4.1"
September57°F76°F66°F5.3"
October49°F65°F56°F9.3"
November35°F54°F45°F6.2"
December26°F41°F33°F5.6"

Did you know?

  • The highest monthly average temperature in Westerly for August is 71 degrees.
  • The lowest monthly average temperature in Westerly for February is 29 degrees.
  • The most monthly precipitation in Westerly occurs in April with 10.1 inches.
  • The air quality index in Westerly is 11% better than the national average.
  • The pollution index in Westerly is 41% better than the national average.

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Compare Westerly, RI Weather To Other Cities

Westerly 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.
IndexWesterlyRhode IslandNational
Air quality index444550
Pollution index2,960,7904,656,1405,066,862

Westerly 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

Westerly air quality information

PollutantTotal
Arsenic0.003%
Benzene0.030%
Carbon Tetrachloride0.010%
Lead0.020%
Mercury0.005%

Average monthly Westerly temperature with heat index

Westerly monthly precipitation with daily maximum

Westerly monthly snow depth with daily maximum

Westerly monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Groton Long Point, CT4774412%
New London, CT27,2184412%
Pawcatuck, CT5,1414412%
Ashaway, RI1,1114412%
Hope Valley, RI1,7884412%
Westerly, RI17,6324412%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
New Castle, IN17,634365630%
Wallingford Center, CT17,634492%
Helena, AL17,63050= 100
Maryland City, MD17,647468%
Martinsburg, WV17,6134118%
Westerly, RI17,6324412%
Source: The Westerly, RI 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.