Boston, Massachusetts 

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Climate in Boston, Massachusetts

Boston, MA enjoys a humid continental climate with four distinct seasons. Summers are generally warm and humid with temperatures in the high 80s, while winters are cold and snowy, with temperatures dipping into the teens. Spring and fall are moderately warm or cool, depending on the year. Precipitation is spread throughout the year with about three to four inches of snow occurring in December, January, and February. Humidity levels tend to remain stable throughout the year due to its proximity to the Atlantic Ocean.

Boston, Massachusetts gets 47 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Boston averages 48 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 200 sunny days per year in Boston. The US average is 205 sunny days.

Boston gets some kind of precipitation, on average, 130 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 82 degrees
Winter Low: the January low is 19
Rain: averages 47 inches of rain a year
Snow: averages 48 inches of snow a year


The annual BestPlaces Comfort Index for Boston is 6.9 (10=best), which means it is about average compared to other places in Massachusetts.

9.1 / 4.9

Summer   /   Winter
August, June and September are the most pleasant months in Boston, while January and February are the least comfortable months.

Climate Averages
  Boston, MassachusettsUnited States
  47.4 in.38.1 in.
  48.1 in.27.8 in.
  130.0 days106.2 days
  200 days205 days
  46 ft.2443 ft.


Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for Boston with an average high temperature of 82.4°, which ranks it as warmer than most places in Massachusetts. In Boston, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Boston are June, August and July.

In Boston, there are 11.3 days annually when the high temperature is over 90°, which is hotter than most places in Massachusetts.

January has the coldest nighttime temperatures for Boston with an average of 19.2°. This is about average compared to other places in Massachusetts.

In Boston, there are 116.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Massachusetts.

In Boston, there are 1.8 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Massachusetts.

The humidity is usually comfortable in Boston but some summer months can be sticky or muggy. July is the most humid month, though humidity is low for most of the year. The most humid months are July, August and June.

March is the wettest month in Boston with 4.6 inches of rain, and the driest month is February with 3.5 inches. The wettest season is Summer with 26% of yearly precipitation and 24% occurs in Spring, which is the driest season. The annual rainfall of 47.4 inches in Boston means that it is drier than most places in Massachusetts.

May is the rainiest month in Boston with 12.4 days of rain, and September is the driest month with only 8.9 rainy days. There are 130.0 rainy days annually in Boston, which is rainier than most places in Massachusetts. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 23% chance of a rainy day.

An annual snowfall of 48.1 inches in Boston means that it is snowier than most places in Massachusetts. January is the snowiest month in Boston with 14.2 inches of snow, and 6 months of the year have significant snowfall.

  • Annual Rainfall (US Avg: 36.5")
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    Reviews for Boston    122 Reviews
    Boston is great! - 4/2/2023
    health care in the country, plenty of jobs, gorgeous architecture, cool neighborhoods, lots of great restaurants, and always something to do. The beautiful coast, the... Read More

    Start Your Review of Boston

    Many pros, but all are outweighed by the cons - 1/31/2022
    I've lived in/near Boston my whole life almost. It has many pros such as a big city feel, extremely safe, reliable train transportation, great food. However any pro... Read More

    Do you want to feel poor?! Come on down! - 10/4/2021
    I moved to MA from the country of Georgia in eastern Europe. Then traveled quite a bit in the U.S. Boston definitely has its own flavor. Suburbs offer okay schools,... Read More

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