Bolton, MA Climate


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United States / Massachusetts / Worcester Metro Area / Worcester County / Bolton / Zip Codes
Bolton, MA has a humid continental climate with warm summers and cold winters. The average temperature in winter is 31 degrees Fahrenheit, while the average temperature in summer is 72 degrees Fahrenheit. Precipitation is mild throughout the year, with the highest amount occurring from May through September. Snowfall can vary greatly from year to year but typically averages around 30 inches annually. Bolton experiences four distinct seasons with plenty of sunshine throughout the year.

Bolton, Massachusetts gets 49 inches of rain, on average, per year. The US average is 38 inches of rain per year.

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

On average, there are 197 sunny days per year in Bolton. The US average is 205 sunny days.

Bolton gets some kind of precipitation, on average, 125 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 83 degrees
Winter Low: the January low is 15
Rain: averages 49 inches of rain a year
Snow: averages 48 inches of snow a year

Bestplaces Comfort Index

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

9.2 Summer - 4.7 Winter
August, July and June are the most pleasant months in Bolton, while January and February are the least comfortable months.

  ClimateBolton, MassachusettsUnited States
  48.5 in.38.1 in.
  47.9 in.27.8 in.
  124.7 days106.2 days
  197 days205 days
  83.1°85.8°
  14.9°21.7°
  6.97
  3.34.3
  377 ft.2443 ft.
Climate
YOU SHOULD KNOW

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 Bolton with an average high temperature of 83.1°, which ranks it as warmer than most places in Massachusetts. In Bolton, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Bolton are June, August and September.
In Bolton, 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 Bolton with an average of 14.9°. This is colder than most places in Massachusetts.
In Bolton, there are 143.6 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Massachusetts.
In Bolton, there are 4.4 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Massachusetts.
Humidity in Bolton is generally low and comfortable. But there some days when the humidity becomes unpleasant, especially in July and August. The most humid months (but still comfortable) are July, August and June.
October is the wettest month in Bolton with 4.5 inches of rain, and the driest month is February with 3.3 inches. The wettest season is Summer with 26% of yearly precipitation and 23% occurs in Spring, which is the driest season. The annual rainfall of 48.5 inches in Bolton means that it is wetter than most places in Massachusetts.
May is the rainiest month in Bolton with 12.2 days of rain, and September is the driest month with only 8.8 rainy days. There are 124.7 rainy days annually in Bolton, which is about average compared to other places in Massachusetts. The rainiest season is Summer when it rains 27% of the time and the driest is Winter with only a 24% chance of a rainy day.
An annual snowfall of 47.9 inches in Bolton means that it is snowier than most places in Massachusetts. January is the snowiest month in Bolton with 14.5 inches of snow, and 6 months of the year have significant snowfall.
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