TODAY AUG15
TEMPERATURE87
HUMIDITY55
PRESSURE29.83
WIND COND.270 8.1
  • 8867Thu
  • 8571Fri50%50%
  • 8063Sat40%30%
  • 7360Sun
  • 7660Mon
daynightWeather update from Norwood, Norwood Memorial Airport at

Wellesley 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
January19°F39°F29°F3.1"
February18°F40°F29°F2.8"
March27°F48°F37°F3.2"
April37°F61°F49°F3.7"
May46°F71°F59°F3.4"
June55°F79°F67°F4.5"
July61°F85°F73°F3.6"
August57°F83°F71°F3.6"
September51°F77°F64°F3.2"
October41°F66°F53°F4.9"
November32°F55°F43°F3.6"
December25°F45°F34°F4.0"

Did you know?

  • The highest monthly average temperature in Wellesley for July is 73 degrees.
  • The lowest monthly average temperature in Wellesley for January is 29 degrees.
  • The most monthly precipitation in Wellesley occurs in October with 4.9 inches.
  • The air quality index in Wellesley is 5% better than the national average.
  • The pollution index in Wellesley is 49% worse than the national average.

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Compare Wellesley, MA Weather To Other Cities

Wellesley 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.
IndexWellesleyMassachusettsNational
Air quality index474050
Pollution index7,556,32012,377,8395,066,862

Wellesley air quality information

MeasurementTotal
Days measured365
Days with good air quality223
Days with moderate air quality137
Days w/ poor A.Q. for sensitive groups5
Days with unhealthy air quality

Wellesley air quality information

PollutantTotal
Arsenic0.010%
Benzene0.070%
Carbon Tetrachloride0.040%
Lead0.010%
Mercury0.040%

Average monthly Wellesley temperature with heat index

Wellesley monthly precipitation with daily maximum

Wellesley monthly snow depth with daily maximum

Wellesley monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Hudson, MA15,3793824%
Maynard, MA10,5263824%
Milford, MA25,7013824%
Hopedale, MA3,8123824%
Cordaville, MA2,8473824%
Wellesley, MA28,909476%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Lake in the Hills, IL28,9083138%
Atwater, CA28,906548%
Schererville, IN28,8996020%
Golden Gate, FL28,9283334%
Rahway, NJ28,884536%
Wellesley, MA28,909476%
Source: The Wellesley, MA 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.