Rochester, MA Climate


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United States / Massachusetts / Boston-Cambridge-Newton Metro Area / Plymouth County / Rochester / Zip Codes
Rochester, MA has a humid continental climate with hot and humid summers and cold winters. Average temperature in the summer months is around 78°F (26°C) and the winter months are in the low to mid-20s°F (-5 to -2°C). Precipitation is moderate throughout the year, with an annual average of 44 inches (112 cm), with most occurring during the warmer months. The area receives about 25 days of snowfall per year, typical for the New England region.

Rochester, Massachusetts gets 51 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Rochester averages 35 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 201 sunny days per year in Rochester. The US average is 205 sunny days.

Rochester gets some kind of precipitation, on average, 124 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 51 inches of rain a year
Snow: averages 35 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Rochester is 7.0 (10=best), which means it is more comfortable than most places in Massachusetts.

9.1 Summer - 5 Winter
August, June and July are the most pleasant months in Rochester, while January and February are the least comfortable months.

  ClimateRochester, MassachusettsUnited States
  50.5 in.38.1 in.
  35.3 in.27.8 in.
  124.3 days106.2 days
  201 days205 days
  82.1°85.8°
  19.3°21.7°
  77
  3.34.3
  30 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 Rochester with an average high temperature of 82.1°, which ranks it as about average compared to other places in Massachusetts. In Rochester, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Rochester are June, August and July.
In Rochester, there are 6.1 days annually when the high temperature is over 90°, which is about average compared to other places in Massachusetts.
January has the coldest nighttime temperatures for Rochester with an average of 19.3°. This is about average compared to other places in Massachusetts.
In Rochester, there are 127.0 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Massachusetts.
In Rochester, there are 0.9 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Massachusetts.
The humidity is usually comfortable in Rochester 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 Rochester with 5.2 inches of rain, and the driest month is May with 3.6 inches. The wettest season is Summer with 27% of yearly precipitation and 23% occurs in Autumn, which is the driest season. The annual rainfall of 50.5 inches in Rochester means that it is wetter than most places in Massachusetts.
December is the rainiest month in Rochester with 11.7 days of rain, and September is the driest month with only 8.9 rainy days. There are 124.3 rainy days annually in Rochester, 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 Autumn with only a 23% chance of a rainy day.
An annual snowfall of 35.3 inches in Rochester means that it is less snowy than most places in Massachusetts. January is the snowiest month in Rochester with 11.6 inches of snow, and 6 months of the year have significant snowfall.
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