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.

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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

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BESTPLACES COMFORT INDEX

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

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

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.

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

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

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

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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.

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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.

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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.

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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.

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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.

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